Summary of summer college students' social practice activities
Summary of summer college students' social practice activities
-- Silkworm production technology
Yaqian Village, Gaoling Town, Muping District, Yantai City, Shandong Province is a small village on the Jiaodong Peninsula. Since 1999, this village abandoned traditional wheat and corn planting and introduced some special cultivation. Large areas of land were changed to apple seedlings, pear seedlings, poplar seedlings and mulberry trees. The saplings are transported to other provinces, and the economic benefits are extremely high. Most of them can be contracted by foreigners. The mulberry trees are in the village. The mulberry trees are planted. The production of silkworms not only breaks the drawbacks of traditional planting, but also the net income per mu of land. Improve, and provide employment opportunities for excessive labor in rural areas. During the summer vacation, I spent two days in the silkworm area, through the specific study, listening and practice of the silkworm technology has a preliminary understanding.
To raise silkworms, you must first grow mulberry trees. The land for planting mulberry trees is fertile, the soil layer should be thick and concentrated into pieces, the irrigation and drainage conditions should be good, and the land with environmental pollution should be avoided. The finished seedlings should be planted before winter and can be properly planted. These conditions are for the less polluted rural areas. It is not difficult to do. After the mulberry seedlings grow, watering loose soil, weeding, cutting, pest control are indispensable steps.
Silkworm is a delicate animal. It must be fully prepared before sericulture. The required materials are as follows:
Product Name Specification Quantity Name Specification Quantity
a common cluster of silkworm rooms
156 holes
180-200 pieces
Woven fabric width 1-1.2 m
40 meters plastic sheet
1.5-2 kg
Silkworm cocoon
0.6*0.9 meters
10-12 wet and dry silkworms with one
Bamboo raft diameter 4-5cm
2.5-3 meters long
1.5-2.1cm in diameter
3.5-4 meters long
8-10 roots
20-24 lime fresh ash blocks
15-20 kg
Small silkworm plastic net small net
1-1.5 kg bleaching powder contains more than 50% of available chlorine
2.5-3 kg
Big silkworm plastic net
3.5-4 kilograms of disease-resistant size 1 silkworms each 2 pounds bag small silkworms a bag
Two large silkworms
Anti-dissipation, a bag of bags, other mulberry, Daisang, cut mulberry disinfection equipment
List of various required materials
After the preparation is completed, the seeding will begin. About a week before the seeding, the silkworm room and the silkworm must be carefully and thoroughly disinfected. The collar must wash the hands and heads, change the clothes, and keep the tools clean and odorless. After the species is returned, the seeds are immediately sorted, and each silkworm seed is separately placed in the sterilized ant box, and the goose feathers are flattened, and the rectangle is 20 cm wide and 15 cm wide, and the eggs are not overlapped. Then, place the pre-sterilized tank with a small amount of clean water at the bottom. The tank is tightly tight with a red and black shading cloth to keep it completely dark. This work should be completed before 5 pm on the same day. After the release, open 1 ° every hour until the opening to 78 ° -79 ° F, the difference between dry and wet at 2-3 ° F, generally 36 hours in the dark, you can lightly hatch. If it is spotted, it can be black-treated for 60 hours and then incubated.
The silkworm species after the photo-incubation are transferred to the silkworm cocoons, that is, the silkworm species that hatch after receiving the ants can be developed. The small silkworm period is a period in which silkworms are filled with solid matter, and it is also a stage of rapid life. Because small silkworms are small, the quality of mulberry leaves and external conditions are relatively strict. Therefore, it is necessary to strengthen feeding, management, improve feeding techniques and improve environmental conditions. The key to small silkworms. The common room is a special silkworm room for cultivating small silkworms. It is necessary to choose a room with ventilation, good light transmission, moisturizing and good insulation performance. The silkworm eggs of the small silkworm stage grow fast and have strict requirements on mulberry leaves. When selecting leaves, it should be mainly leaf color, combined with hand touch
period
Leaf color
feature
Dosage
Receiving ants yellow with green slightly wrinkled will be planted 2 two
Small silkworm early and middle green with yellow hand touch soft 0.5-1 kg each time
Small silkworm late green
About 3 pounds each time
Note that the small silkworm period is sang twice a day, 8-10 am, 3-4 pm, should avoid the high temperature when picking mulberry in the morning. After harvesting, the mulberry leaves should be stored in storage. Generally, the tank storage method is adopted, that is, a clean fruit cage is placed in the cylinder, a small amount of clear water is placed in the bottom of the cylinder, the mulberry leaves are neatly arranged, and the petiole is placed down the cylinder. Keep the hole in the middle, be careful not to over-tighten, cover the wet cloth with the cover, and put the cylinder into the low temperature and humidity. Pay attention to the wet cloth should be washed frequently, the cylinder water should be changed once a day. In the small silkworm period, the mulberry leaves should be cut into two squares of the silkworm body. Each night, the mulberry leaves are given four times. They are 5:00 am, 10:30 am, 3 pm, 9 pm, and the amount of mulberry should be based on The development degree of silkworm and the density of silkworm head are flexibly mastered. Generally, 1-2 times after feeding, the mulberry is less, and the food is eaten and the silkworm is reduced. The method of giving mulberry is: open and ventilate the plastic film half an hour before the mulberry, then expand the seat and squash it, and strive to distribute the silkworm evenly. Give mulberry time to the front, the middle, the small hole, the big hole to make up, and strive to be even and equal, and finally cover the plastic film. According to the growth and development of silkworm, the area of silkworms should be expanded to meet the growth and development of silkworms. The growth and development of small silkworms is fast, and the scope of action is small. The principle of expanding the space in advance and expanding first and then lengthening should be mastered. The method is to cut the mulberry leaves into mulberry leaves with a width of 1cm and a length of 5cm in the early stage. Place them in the dense part of the silkworm head for 5-10 minutes. After some silkworms climb onto the mulberry leaves, use the silkworm chopsticks together with the mulberry leaves. Clip around the silkworm seat to expand the area of the silkworm seat. In the middle and late stage, silkworm chopsticks can be used to directly move silkworms and silkworms to the silkworms, but care should be taken to avoid damage to the silkworms. The size of the silkworms is evenly spread in the silkworms, and the silkworms and silkworms are mutually If it is not overlapped, after the silkworm is expanded, the residual mulberry and silkworm feces in the silkworm seat should be removed to clean the silkworm to prevent the spread of the bacteria.
Small silkworms will sleep for a certain period of time, do not eat, move a series of changes in the body's physiology, remove the old skin, replace the new skin, need to consume a lot of nutrients, so the indoor pre-temperature is 1-2 degrees lower than the breeding period, The humidity is preferably 75-80%. It should be properly dried in the early stage, and it will be wet in the later stage to facilitate the skin. It should prevent strong wind, strong light, severe vibration and contact with no odorous materials. It does not cover the plastic film during sleep. The first time after the silkworms sleep, the mulberry is foraging. The food is too early to damage the mouthparts and the gastrointestinal tract of the silkworm, causing uneven development. It is easy to cause hunger in the late, affecting the physical condition of the silkworm. - 10 hours or all of them for 3-4 hours for food, the edible leaves should be properly tender, 80% of the maximum amount of mulberry is appropriate, avoid excessive.
The small silkworm unit has a large body surface area, a thin wax layer on the skin, and easy to dissipate moisture and heat in the body. Therefore, the small silkworm prefers a high temperature and a humid environment, so it is necessary to keep warm and moisturize during the feeding process.
Small silkworms are weak, and they have poor resistance to various silkworm diseases and harmful substances. In order to ensure that the small silkworms are disease-free and strong, it is necessary to do a good job in disease prevention on the basis of strict disinfection before sericulture. Disinfectants such as anti-straw powder and fresh lime powder are usually used. In addition, it should be noted that the movement of the whole small silkworm period should be light and does not damage the silkworm body.
After the small silkworm develops normally until it matures, it enters the large silkworm period. According to the growth characteristics of the large silkworm period, it must be done as follows: 1. Continue to select the silkworm leaves, and pick the middle and upper leaves of the branches in summer and autumn, and increase the amount of silkworms appropriately. Make it eat well, grow silkworms. 2. Continue to control the temperature and humidity protection. The temperature is 77-78 ゚F and the dry humidity is 4-5 ゚F to ensure the growth and development of the silkworm. 3, highlight the disinfection and disease prevention and dilution work, adhere to 1-2 days to sprinkle a random anti-frozen powder, expand the silkworm seat once a day, each time to the mulberry silkworm to ensure that the silkworm seat area reaches 15 square meters or more, and do To the mulberry evenly not starving silkworms.
After further development of the large silkworm, the silkworm body increased significantly and the silk gland increased sharply. At the same time, the body surface area of the silkworm body is small, the waxy layer is thick, and the water in the body is not easy to be distributed. Therefore, the resistance to high temperature and humidity is poor, and the amount of succulent mulberry is large. The humidity of the silkworm seat is large, and the indoor air is dirty, which is not conducive to the silkworm. Growth, therefore must be 1, strengthen ventilation and prevent high temperature and humidity. 2, rare satiety: silkworms should be properly diluted, silkworm does not touch the density of silkworms is appropriate, such as silkworms too dense, not only can not achieve the purpose of satiety, but also easy to induce silkworm disease, affecting the yield and quality of silkworm cocoons. Satisfaction is to satisfy the rapid growth of the silk gland of the silkworm. Generally, it is given to the mulberry four times every day and night. Each time the amount of mulberry should be determined according to the situation of the last mulberry, it is suitable for the mulberry.
The main components of silkworm are protein and water. If the weather is dry, the moisture content of mulberry leaves is low, which can not meet the demand of silkworms for water. It is better to spray water on mulberry leaves before feeding, so it is better to spray wet without dripping. Strengthen the mining, transportation and storage of mulberry leaves, so that it can be quickly harvested, loosely loaded, and transported in time for storage. The mulberry room should be low-temperature and wet, so that the mulberry leaves are fresh and not deteriorated.
The upper cluster is the process by which the large silkworms that develop well climb to the nodes. Management in the upper cluster and cluster is an important part of improving the quality of silkworm cocoons and increasing economic income. It is also the most intense and busy process in sericulture. Therefore, all preparations must be done 3-5 days in advance. Cluster room selection: The cluster room must be selected for ventilation, even light, relatively dry houses, such as unconditionally available silkworm room and cluster room. Cluster preparation: 180-200 squares of 156-hole squares are required for each silkworm, and two straight sticks or thin bamboo rods with a diameter of 0.8-1cm and a length of 65cm are prepared for each cluster. The long sides of the tufts are tied to the sticks, and each line is tied with 3-4 lines, so that the straight sticks are about 4 cm longer than the tufts and the ends. In the cluster room, use a bamboo pole to make a row of 62 cm wide, and the length depends on the site. The hanging cluster is usually three layers per row, each layer is separated by 50 cm for hanging clusters, in order to reduce the humidity of the cluster and improve the quality of the enamel. , vigorously promote the outdoor clusters, indoor hanging clusters.
In the process of clustering, it is necessary to get ready to cluster, and it will have adverse effects on enamel too late. The characteristics of mature silkworms should be gradually reduced in appetite, stop eating mulberry, and discharge green soft feces. The chest is transparent. The body is slightly softer and shorter, with 2-3 pieces of feces in the tail, and the head is raised and swings left and right. When clustering, it is necessary to adopt a method of selecting two clusters in large batches, that is, for the silkworms that are relatively well-developed, when there are not too many mature silkworms, a small number of mature silkworms are first clustered, and the green-headed silkworms are picked up and raised at the peak. If a large number of mature silkworms are not clustered once, they must be selected one by one. The density of the upper cluster is usually about 10% more than that of the hole. After 5-10 minutes, most of the mature silkworms grasp the cluster pieces, gently lift them up and hang them on the cluster rack. 5-6 hours after the upper cluster, when 50% of the silkworms enter the hole and start to spun, the cluster pieces are hung once, so that the silkworms without the holes are re-crawled into the holes, and the fallen silkworms are separately clustered. 15-20 hours after the upper cluster, the silkworms and the double-stem silkworms that have not entered the hole are picked up and clustered separately, and the diseased silkworms are sorted and disposed of properly.
The management in the cluster should focus on ventilation and dehumidification. From the first day of the cluster, the doors and windows should be opened and ventilated every day. The rainy days and late autumn silkworms should be warmed up and drained. The chamber temperature is required to be maintained at 76-77 ゚F and the dry humidity difference is 5-6 ゚F.
On the seventh day after the cluster, the summer and the mid-autumn are 6 days, and the late autumn is 8-9 days. When the carcass is yellowish brown, the sputum can be started. If the scorpion is too early, the carcass will be bleeding and the internal sputum will increase. The rate of sputum, the rate of sputum is reduced, and the price of sputum should be reduced. When picking, you should first pick it up first, pick it in batches, and ask for lightness and lightness. The upper scorpion, double gong, yellow spot and printed smash should be stacked separately and sorted out.茧 要 要 要 要 要 要 要 要 要 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 Fresh oysters are harvested, dried, and selected. They are sold at the agreed time of the station. When they are sold out, they must be packed in baskets. On the day of sale, they will go with the baskets. It is forbidden to pre-load the basket in order to avoid sputum fever. It is strictly forbidden to use sacks, plastic woven bags, etc. to carry the shackles and lower ankles. It should be loosened and transported to prevent sun exposure, rain and extrusion to avoid affecting the silkworm.
The rafts of Yaqian Village are all purchased by the district silk company, the price is 6-7 yuan per catty, and each net can earn about 400 yuan. Because of the large amount of sericulture, it is generally collectively raised, and the actual feeding process will There are a lot of troubles, not as written in the book, thanks to expert guidance. At present, the villagers are becoming more proficient in the mastery of sericulture technology, and the output is gradually increasing.
The two days of field practice, the deepest impression I left was tired, but in order to live a good life, get rich early, the villagers have no complaints. I believe that the village of Yaqian is not far from the days of soaring.
Class 2000 Pharmacy Class
-- Silkworm production technology
Yaqian Village, Gaoling Town, Muping District, Yantai City, Shandong Province is a small village on the Jiaodong Peninsula. Since 1999, this village abandoned traditional wheat and corn planting and introduced some special cultivation. Large areas of land were changed to apple seedlings, pear seedlings, poplar seedlings and mulberry trees. The saplings are transported to other provinces, and the economic benefits are extremely high. Most of them can be contracted by foreigners. The mulberry trees are in the village. The mulberry trees are planted. The production of silkworms not only breaks the drawbacks of traditional planting, but also the net income per mu of land. Improve, and provide employment opportunities for excessive labor in rural areas. During the summer vacation, I spent two days in the silkworm area, through the specific study, listening and practice of the silkworm technology has a preliminary understanding.
To raise silkworms, you must first grow mulberry trees. The land for planting mulberry trees is fertile, the soil layer should be thick and concentrated into pieces, the irrigation and drainage conditions should be good, and the land with environmental pollution should be avoided. The finished seedlings should be planted before winter and can be properly planted. These conditions are for the less polluted rural areas. It is not difficult to do. After the mulberry seedlings grow, watering loose soil, weeding, cutting, pest control are indispensable steps.
Silkworm is a delicate animal. It must be fully prepared before sericulture. The required materials are as follows:
Product Name Specification Quantity Name Specification Quantity
a common cluster of silkworm rooms
156 holes
180-200 pieces
Woven fabric width 1-1.2 m
40 meters plastic sheet
1.5-2 kg
Silkworm cocoon
0.6*0.9 meters
10-12 wet and dry silkworms with one
Bamboo raft diameter 4-5cm
2.5-3 meters long
1.5-2.1cm in diameter
3.5-4 meters long
8-10 roots
20-24 lime fresh ash blocks
15-20 kg
Small silkworm plastic net small net
1-1.5 kg bleaching powder contains more than 50% of available chlorine
2.5-3 kg
Big silkworm plastic net
3.5-4 kilograms of disease-resistant size 1 silkworms each 2 pounds bag small silkworms a bag
Two large silkworms
Anti-dissipation, a bag of bags, other mulberry, Daisang, cut mulberry disinfection equipment
List of various required materials
After the preparation is completed, the seeding will begin. About a week before the seeding, the silkworm room and the silkworm must be carefully and thoroughly disinfected. The collar must wash the hands and heads, change the clothes, and keep the tools clean and odorless. After the species is returned, the seeds are immediately sorted, and each silkworm seed is separately placed in the sterilized ant box, and the goose feathers are flattened, and the rectangle is 20 cm wide and 15 cm wide, and the eggs are not overlapped. Then, place the pre-sterilized tank with a small amount of clean water at the bottom. The tank is tightly tight with a red and black shading cloth to keep it completely dark. This work should be completed before 5 pm on the same day. After the release, open 1 ° every hour until the opening to 78 ° -79 ° F, the difference between dry and wet at 2-3 ° F, generally 36 hours in the dark, you can lightly hatch. If it is spotted, it can be black-treated for 60 hours and then incubated.
The silkworm species after the photo-incubation are transferred to the silkworm cocoons, that is, the silkworm species that hatch after receiving the ants can be developed. The small silkworm period is a period in which silkworms are filled with solid matter, and it is also a stage of rapid life. Because small silkworms are small, the quality of mulberry leaves and external conditions are relatively strict. Therefore, it is necessary to strengthen feeding, management, improve feeding techniques and improve environmental conditions. The key to small silkworms. The common room is a special silkworm room for cultivating small silkworms. It is necessary to choose a room with ventilation, good light transmission, moisturizing and good insulation performance. The silkworm eggs of the small silkworm stage grow fast and have strict requirements on mulberry leaves. When selecting leaves, it should be mainly leaf color, combined with hand touch
period
Leaf color
feature
Dosage
Receiving ants yellow with green slightly wrinkled will be planted 2 two
Small silkworm early and middle green with yellow hand touch soft 0.5-1 kg each time
Small silkworm late green
About 3 pounds each time
Note that the small silkworm period is sang twice a day, 8-10 am, 3-4 pm, should avoid the high temperature when picking mulberry in the morning. After harvesting, the mulberry leaves should be stored in storage. Generally, the tank storage method is adopted, that is, a clean fruit cage is placed in the cylinder, a small amount of clear water is placed in the bottom of the cylinder, the mulberry leaves are neatly arranged, and the petiole is placed down the cylinder. Keep the hole in the middle, be careful not to over-tighten, cover the wet cloth with the cover, and put the cylinder into the low temperature and humidity. Pay attention to the wet cloth should be washed frequently, the cylinder water should be changed once a day. In the small silkworm period, the mulberry leaves should be cut into two squares of the silkworm body. Each night, the mulberry leaves are given four times. They are 5:00 am, 10:30 am, 3 pm, 9 pm, and the amount of mulberry should be based on The development degree of silkworm and the density of silkworm head are flexibly mastered. Generally, 1-2 times after feeding, the mulberry is less, and the food is eaten and the silkworm is reduced. The method of giving mulberry is: open and ventilate the plastic film half an hour before the mulberry, then expand the seat and squash it, and strive to distribute the silkworm evenly. Give mulberry time to the front, the middle, the small hole, the big hole to make up, and strive to be even and equal, and finally cover the plastic film. According to the growth and development of silkworm, the area of silkworms should be expanded to meet the growth and development of silkworms. The growth and development of small silkworms is fast, and the scope of action is small. The principle of expanding the space in advance and expanding first and then lengthening should be mastered. The method is to cut the mulberry leaves into mulberry leaves with a width of 1cm and a length of 5cm in the early stage. Place them in the dense part of the silkworm head for 5-10 minutes. After some silkworms climb onto the mulberry leaves, use the silkworm chopsticks together with the mulberry leaves. Clip around the silkworm seat to expand the area of the silkworm seat. In the middle and late stage, silkworm chopsticks can be used to directly move silkworms and silkworms to the silkworms, but care should be taken to avoid damage to the silkworms. The size of the silkworms is evenly spread in the silkworms, and the silkworms and silkworms are mutually If it is not overlapped, after the silkworm is expanded, the residual mulberry and silkworm feces in the silkworm seat should be removed to clean the silkworm to prevent the spread of the bacteria.
Small silkworms will sleep for a certain period of time, do not eat, move a series of changes in the body's physiology, remove the old skin, replace the new skin, need to consume a lot of nutrients, so the indoor pre-temperature is 1-2 degrees lower than the breeding period, The humidity is preferably 75-80%. It should be properly dried in the early stage, and it will be wet in the later stage to facilitate the skin. It should prevent strong wind, strong light, severe vibration and contact with no odorous materials. It does not cover the plastic film during sleep. The first time after the silkworms sleep, the mulberry is foraging. The food is too early to damage the mouthparts and the gastrointestinal tract of the silkworm, causing uneven development. It is easy to cause hunger in the late, affecting the physical condition of the silkworm. - 10 hours or all of them for 3-4 hours for food, the edible leaves should be properly tender, 80% of the maximum amount of mulberry is appropriate, avoid excessive.
The small silkworm unit has a large body surface area, a thin wax layer on the skin, and easy to dissipate moisture and heat in the body. Therefore, the small silkworm prefers a high temperature and a humid environment, so it is necessary to keep warm and moisturize during the feeding process.
Small silkworms are weak, and they have poor resistance to various silkworm diseases and harmful substances. In order to ensure that the small silkworms are disease-free and strong, it is necessary to do a good job in disease prevention on the basis of strict disinfection before sericulture. Disinfectants such as anti-straw powder and fresh lime powder are usually used. In addition, it should be noted that the movement of the whole small silkworm period should be light and does not damage the silkworm body.
After the small silkworm develops normally until it matures, it enters the large silkworm period. According to the growth characteristics of the large silkworm period, it must be done as follows: 1. Continue to select the silkworm leaves, and pick the middle and upper leaves of the branches in summer and autumn, and increase the amount of silkworms appropriately. Make it eat well, grow silkworms. 2. Continue to control the temperature and humidity protection. The temperature is 77-78 ゚F and the dry humidity is 4-5 ゚F to ensure the growth and development of the silkworm. 3, highlight the disinfection and disease prevention and dilution work, adhere to 1-2 days to sprinkle a random anti-frozen powder, expand the silkworm seat once a day, each time to the mulberry silkworm to ensure that the silkworm seat area reaches 15 square meters or more, and do To the mulberry evenly not starving silkworms.
After further development of the large silkworm, the silkworm body increased significantly and the silk gland increased sharply. At the same time, the body surface area of the silkworm body is small, the waxy layer is thick, and the water in the body is not easy to be distributed. Therefore, the resistance to high temperature and humidity is poor, and the amount of succulent mulberry is large. The humidity of the silkworm seat is large, and the indoor air is dirty, which is not conducive to the silkworm. Growth, therefore must be 1, strengthen ventilation and prevent high temperature and humidity. 2, rare satiety: silkworms should be properly diluted, silkworm does not touch the density of silkworms is appropriate, such as silkworms too dense, not only can not achieve the purpose of satiety, but also easy to induce silkworm disease, affecting the yield and quality of silkworm cocoons. Satisfaction is to satisfy the rapid growth of the silk gland of the silkworm. Generally, it is given to the mulberry four times every day and night. Each time the amount of mulberry should be determined according to the situation of the last mulberry, it is suitable for the mulberry.
The main components of silkworm are protein and water. If the weather is dry, the moisture content of mulberry leaves is low, which can not meet the demand of silkworms for water. It is better to spray water on mulberry leaves before feeding, so it is better to spray wet without dripping. Strengthen the mining, transportation and storage of mulberry leaves, so that it can be quickly harvested, loosely loaded, and transported in time for storage. The mulberry room should be low-temperature and wet, so that the mulberry leaves are fresh and not deteriorated.
The upper cluster is the process by which the large silkworms that develop well climb to the nodes. Management in the upper cluster and cluster is an important part of improving the quality of silkworm cocoons and increasing economic income. It is also the most intense and busy process in sericulture. Therefore, all preparations must be done 3-5 days in advance. Cluster room selection: The cluster room must be selected for ventilation, even light, relatively dry houses, such as unconditionally available silkworm room and cluster room. Cluster preparation: 180-200 squares of 156-hole squares are required for each silkworm, and two straight sticks or thin bamboo rods with a diameter of 0.8-1cm and a length of 65cm are prepared for each cluster. The long sides of the tufts are tied to the sticks, and each line is tied with 3-4 lines, so that the straight sticks are about 4 cm longer than the tufts and the ends. In the cluster room, use a bamboo pole to make a row of 62 cm wide, and the length depends on the site. The hanging cluster is usually three layers per row, each layer is separated by 50 cm for hanging clusters, in order to reduce the humidity of the cluster and improve the quality of the enamel. , vigorously promote the outdoor clusters, indoor hanging clusters.
In the process of clustering, it is necessary to get ready to cluster, and it will have adverse effects on enamel too late. The characteristics of mature silkworms should be gradually reduced in appetite, stop eating mulberry, and discharge green soft feces. The chest is transparent. The body is slightly softer and shorter, with 2-3 pieces of feces in the tail, and the head is raised and swings left and right. When clustering, it is necessary to adopt a method of selecting two clusters in large batches, that is, for the silkworms that are relatively well-developed, when there are not too many mature silkworms, a small number of mature silkworms are first clustered, and the green-headed silkworms are picked up and raised at the peak. If a large number of mature silkworms are not clustered once, they must be selected one by one. The density of the upper cluster is usually about 10% more than that of the hole. After 5-10 minutes, most of the mature silkworms grasp the cluster pieces, gently lift them up and hang them on the cluster rack. 5-6 hours after the upper cluster, when 50% of the silkworms enter the hole and start to spun, the cluster pieces are hung once, so that the silkworms without the holes are re-crawled into the holes, and the fallen silkworms are separately clustered. 15-20 hours after the upper cluster, the silkworms and the double-stem silkworms that have not entered the hole are picked up and clustered separately, and the diseased silkworms are sorted and disposed of properly.
The management in the cluster should focus on ventilation and dehumidification. From the first day of the cluster, the doors and windows should be opened and ventilated every day. The rainy days and late autumn silkworms should be warmed up and drained. The chamber temperature is required to be maintained at 76-77 ゚F and the dry humidity difference is 5-6 ゚F.
On the seventh day after the cluster, the summer and the mid-autumn are 6 days, and the late autumn is 8-9 days. When the carcass is yellowish brown, the sputum can be started. If the scorpion is too early, the carcass will be bleeding and the internal sputum will increase. The rate of sputum, the rate of sputum is reduced, and the price of sputum should be reduced. When picking, you should first pick it up first, pick it in batches, and ask for lightness and lightness. The upper scorpion, double gong, yellow spot and printed smash should be stacked separately and sorted out.茧 要 要 要 要 要 要 要 要 要 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 严格 Fresh oysters are harvested, dried, and selected. They are sold at the agreed time of the station. When they are sold out, they must be packed in baskets. On the day of sale, they will go with the baskets. It is forbidden to pre-load the basket in order to avoid sputum fever. It is strictly forbidden to use sacks, plastic woven bags, etc. to carry the shackles and lower ankles. It should be loosened and transported to prevent sun exposure, rain and extrusion to avoid affecting the silkworm.
The rafts of Yaqian Village are all purchased by the district silk company, the price is 6-7 yuan per catty, and each net can earn about 400 yuan. Because of the large amount of sericulture, it is generally collectively raised, and the actual feeding process will There are a lot of troubles, not as written in the book, thanks to expert guidance. At present, the villagers are becoming more proficient in the mastery of sericulture technology, and the output is gradually increasing.
The two days of field practice, the deepest impression I left was tired, but in order to live a good life, get rich early, the villagers have no complaints. I believe that the village of Yaqian is not far from the days of soaring.
Class 2000 Pharmacy Class
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