CATDOLL : CATDOLL: Where are the people raising silkworms the most?

1. Where are the people raising silkworms the most?

China's original three major silkworm-raising areas are: Jiangsu and Zhejiang, Guangdong, and Sichuan. In terms of the quality of silkworm breeding, Jiangsu and Zhejiang are the best, and in terms of the number of silkworms raised in a year, Guangdong has the most, because the climate here is good and silkworms can be raised at least 6-7 times a year. However, with the development of the economy here and the increase in labor costs, the sericulture industry has begun to move to Guangxi, so now the most silkworm-raising places should be in Guangxi.

Yizhou City in Guangxi is currently one of the largest silkworm breeding bases in the country, with mature technology, high-quality silkworm species and mulberry seedlings. In 2018, the price of silkworm cocoons has risen to 30 yuan per catty. Now there are new or slow-growing wooden square cocoons, with plastic frames, which can be used repeatedly for 20 years. They are easier to use than paper ones and more cost-effective over time. Interested farmers can visit Yizhou and enjoy the beautiful waters.

2. Where are there more silkworms?

Temperate, subtropical and tropical regions. The Pearl River Delta region of my country is rich in silkworms. In addition to the Pearl River Delta, the main silkworm producing areas in my country include the East China Plain and the Sichuan Basin.

Silkworms are metamorphosis insects, the most common of which is the mulberry silkworm, also known as the domestic silkworm, one of the economic insects that feeds on mulberry leaves and spins silk cocoons. The silkworm originated in China, and its development temperature is 7-40℃, and the optimal temperature for breeding is 20-30℃.

Silkworms feed on mulberry leaves. After eating mulberry leaves continuously, their bodies turn white. After a period of time, they begin to shed their skin. The molting period lasts for about a day, during which they do not eat or move, like sleeping. This is called "hibernation."

After molting once, it becomes a second-instar larva. Each time it molts, it grows one year older. The larvae molt four times in total to become fifth-instar larvae. They then eat mulberry leaves for eight days to become mature silkworms and begin to spin silk and make cocoons.

Additional information:

Types of silkworms

Cassava silkworm

When castor silkworms are fed with cassava, they are commonly known as cassava silkworms. In fact, they are castor silkworms. In 1956, Cenxi County in Guangxi successfully tried to raise castor silkworms with cassava leaves, and then expanded to neighboring counties to raise them, and they are called cassava silkworms. Guangdong and Fujian also raised them successively. Their habits and characteristics are the same as castor silkworms.

Horse silkworm

When castor silkworms use mulberry leaves as feed, they are commonly known as mulberry silkworms. In 1965, the Hunan Tu and Miao Autonomous Prefecture Sericulture Experimental Station successfully raised castor silkworms using wild mulberry leaves.

The silkworms raised with mulberry leaves grow slower than those raised with castor leaves. They take 2 to 4 days to grow to full age, but the weight of the cocoon layer is the same, reaching 0.34 to 0.42g. They have also been raised in Hunan, Hubei, Guizhou, Sichuan, Guangxi, Gansu, Shaanxi and other provinces. Their habits and characteristics are the same as those of castor silkworms.

Huili silkworm

That is, the castor silkworm. It is the transliteration of the castor silkworm. The castor silkworm originated from Arom in northeastern India. The locals called it castor. When the Chinese introduced the castor silkworm, they also called it Huili silkworm because Huili means that it is economical to raise and profitable, and easy to promote.

Reference source: Baidu Encyclopedia - Silkworm

3. How to breed oak silkworms?

According to the physiological characteristics of young tussah silkworms, a synthetic bag made of kraft paper on one side and plastic film on the other side is placed flat or hung indoors to artificially create an environment suitable for the growth and development of young silkworms, so that they can achieve high and stable production. The average yield of one-year-old spring tussah silkworms raised indoors in synthetic bags has increased by 30%, and the age period has been shortened by 4 to 5 days.

1. Preparation for indoor silkworm rearing in synthetic bags

First, use colorless, transparent, non-toxic polyethylene plastic film and kraft paper to sew into silkworm bags. The plastic film is selected to be 0.04mm thick and cut into 49cm×38cm specifications. The kraft paper is selected to be 80g/O paper and cut into 50cm×40cm paper blocks. Put the plastic film on the paper block, fold the three sides inward 1cm respectively, and sew it with a sewing machine. When sewing synthetic bags, choose a clean room, away from places with large cocoons, waste cocoons and other pathogenic microorganisms, so as not to contaminate the synthetic bags and spread silkworm diseases. The synthetic bags must be made before the silkworm room is disinfected and packed for safekeeping. For every 1kg of silkworm eggs, silkworm farmers need to prepare about 350 synthetic bags. Each bag can hold about 350-400 eggs. About the eggs of a moth.

2. Preparation of silkworm rearing room and its equipment

In rural areas, it is best to have white lime walls in the silkworm room, and the cement floor should be rough and easy to wash and disinfect, and stay away from pesticides, fertilizers and other irritants.

The silkworm rearing room is usually disinfected 4-5 days before the silkworms come out. First, wash the walls and the floor with clean water, and then wash the silkworm rearing tools with 1% caustic soda solution. Then, use wooden poles to build a 3-layer frame in the middle of the room, and connect them with fences or knotted poles to build a ventilated silkworm rearing work platform. The frame width is about 1.6m, and the frame length can be flexibly controlled according to the length of the room. Silkworms are fed on both sides, and two rows of silkworm bags are placed on each side, divided into 3 layers: upper, middle and lower. The bottom layer is 80cm above the ground, and the distance between each layer is 50cm. If the silkworms are raised in hanging order, an iron wire can be pulled between the two walls, and all silkworm rearing tools, leaf-picking silkworm baskets, work clothes and other supplies are placed in the room together.

When the indoor temperature rises to above 23℃, use 3% formalin solution to spray the ground and silkworm raising utensils, and then use 5g/m³ of poison to disinfect in a closed environment under high temperature and humidity for 24 hours. When disinfecting, close the doors and windows, and open the doors and windows to ventilate and remove the smell of medicine one day before the silkworms come out. Before using the synthetic bags, use 3% formalin solution to disinfect for 30 minutes at a temperature of 23℃-25℃. Fill each synthetic bag with a small amount of solution, and then put them into the disinfectant in turn. Take them out and dry them after 30 minutes.

3. Indoor silkworm rearing method in bags

3.1 Ant collection method

On the afternoon of the day before the silkworms hatch, pour the disinfected silkworm eggs into the synthetic bag, measure out 350 to 400 eggs, and place them evenly at the bottom of the synthetic bag, leaving 1/5 of the bottom area of ​​the synthetic bag to fold, with the plastic side facing up, and place on the operating table.

In order to make the silkworms hatch uniformly, the temperature in the silkworm room is changed. That is, the temperature starts to rise at 12:00 every night, gradually rises to 20℃, stops in the afternoon, and keeps the temperature above 14℃ at night until 12:00 at night, until the ants are harvested, which usually takes 2 days, and the humidity is kept at about 85%. Sprinkle some water on the ground.

If the silkworms do not emerge on the first day after heating, you can put a small branch of oak leaves in the bag to moisten it, so as to facilitate the emergence of silkworms on the second day. The newly emerged silkworms have a strong phototaxis and are prone to crawling in piles, causing scratches, so the indoor light should be uniform.

3.2 Feeding and management

After the ants are collected, the temperature can be raised to 25℃. The temperature starts to rise at 4:00-5:00 in the morning every day, gradually rises to 25℃ and stops in the evening. The temperature is maintained at 23℃ at night. Generally, no moisture is needed during silkworm rearing. Leaves are fed once at 5:00 in the morning and 5:00 in the evening. Leaves are fed 3 times a day after they wake up from sleep. The amount of leaves fed depends on the growth and development of the silkworms and the number of silkworms in the bag.

As the silkworms grow, gradually increase the amount of leaves they feed. After the peak feeding period, reduce the amount of leaves they feed appropriately as they approach the dormant period. Generally, a little leftover before the next feeding is considered an appropriate amount. Avoid too much leftover leaves, as they will mold and deteriorate, affect the health of the silkworms, and easily induce silkworm diseases.

Wash your hands with soapy water before picking leaves and feeding them to silkworms. It is better to wash your hands with disinfectant. When picking leaves on rainy days, shake them clean and dry them indoors before feeding them. Feed the leaves gently to avoid hurting the silkworms. The length of the branches for picking leaves is generally 15 to 20 cm. When feeding silkworms, wear a special gown for silkworm rearing room. The area of ​​the silkworm seat can be gradually enlarged. Put the leaves on the sand each time and fold them back along the edge of the new leaves. As the feeding amount increases, the synthetic bag becomes larger. When placing, it can be placed diagonally to reduce the area and facilitate ventilation and dehumidification. During feeding, the upper and lower layers can be exchanged according to the development of the silkworms. Because the temperature difference between the upper and lower layers is large, the development speed is different. By exchanging positions, the overall development can be uniform.

3.3 Preparation before going up the mountain

The indoor feeding time of young silkworms in bags is generally 7 days. After they have woken up from sleep, they are fed for 1 day and then taken to the mountain immediately. If they are not fully developed, they can be taken in batches. Because the temperature in May is still low. In order to make the silkworms adapt to the natural environment and eat leaves in time, and reduce the loss, the fire should be stopped and the temperature should be cooled down one night before going to the mountain. At night, the windows can be opened to make the indoor temperature close to the outdoor temperature, which is convenient for transportation and is conducive to sowing the silkworms. It can be done one night before going to the mountain. Desand half an hour after feeding the leaves, cut the bottom of the bag with a blade, remove the sand and silkworm feces, and then fold it back and put it back in place.

It is best to send the silkworms to the mountain on a sunny and windless day. If it is predicted to rain on the day of the trip, the indoor temperature can be lowered to promote the slow development of the silkworms, but not too long. It can only be delayed for 1 day.

When going up the mountain, stand the silkworm bag in the silkworm basket, and do not squeeze the silkworms too much. Transport it to the silkworm farm at around 4:00 in the morning. Take the sand out of the bag, put it in the handle of the oak tree, tuck the plastic of the bag mouth into the rope, with the paper side facing the sun, and the silkworms will gradually climb up the tree.

The indoor breeding technology of spring tussah silkworms can not only make the tussah silkworm production resist natural disasters, insects and bird damage, but also have good seedling protection effect, high cocoon rate, large increase in production, and significant economic benefits. At the same time, it is also more labor-saving, effort-saving, and field-saving, and reduces the amount of seeds used and reduces production costs.

1. Site and tree species selection Spring oak silkworm seedling farm should be selected in the sunny southeast mountainside area that can avoid the strong southwest wind and the cold current of the north wind during the spring silkworm period. The area is 2 mu (1 mu - 667 m2) per spring silkworm. Remove the weeds and cut the shrubs in the field before sowing. It is advisable to choose oak (Quercus acutissima) and Liaodong oak with good leaf quality, early germination and vigorous tree vigor. 2. Collection of acorns for sowing and seedling raising: ① Select the mother tree for seed collection: Before collecting acorns, first investigate the distribution of the mother tree for seed collection, the maturity period of acorns and the fruiting situation of the year, and then organize manpower to collect. When collecting seeds, pay attention to selecting the mother tree for seed collection, which is about 30 years old, strong and healthy, and free of diseases and insect pests. ② Collect in batches: When the acorns are ripe, the peel changes from green to beige, and the cupule and the fruit are naturally separated. Because acorns are prone to acorn weevils, which eat the cotyledons, they should be collected in batches after they mature, early-ripening ones early and late-ripening ones late, so that the acorn pests can be killed in time. ③Seed registration: In order to use acorns legally, they must be registered, including tree species, batches, time, quantity, yield, and ecological conditions of the origin.

1. Site and tree species selection Spring oak silkworm seedling farm should be selected in the sunny southeast mountainside area that can avoid the strong southwest wind and the cold current of the north wind during the spring silkworm period. The area is 2 mu (1 mu - 667 m2) per spring silkworm. Remove the weeds and cut the shrubs in the field before sowing. It is advisable to choose oak (Quercus acutissima) and Liaodong oak with good leaf quality, early germination and vigorous tree vigor. 2. Collection of acorns for sowing and seedling raising: ① Select the mother tree for seed collection: Before collecting acorns, first investigate the distribution of the mother tree for seed collection, the maturity period of acorns and the fruiting situation of the year, and then organize manpower to collect. When collecting seeds, pay attention to selecting the mother tree for seed collection, which is about 30 years old, strong and healthy, and free of diseases and insect pests. ② Collect in batches: When the acorns are ripe, the peel changes from green to beige, and the cupule and the fruit are naturally separated. Because acorns are prone to acorn weevils, which eat the cotyledons, they should be collected in batches after they mature, early-ripening ones early and late-ripening ones late, so that the acorn pests can be killed in time. ③Seed registration: In order to use acorns legally, they must be registered, including tree species, batches, time, quantity, yield, and ecological conditions of the origin.

AbstractMany rural areas in the south are developing mulberry planting and silkworm breeding industries. With the advancement of the "Belt and Road" in the new era, the development of the silkworm breeding industry has ushered in new opportunities. Rural silkworm breeding can be integrated with the primary, secondary and tertiary industries. Silkworm cocoons can be used to extract silk, which is a precious textile raw material and can be processed into silk quilts, health pillows, etc. Mulberry trees that are used to plant mulberry trees and raise silkworms can be picked and processed. One breeding and multiple benefits make many people want to develop silkworm breeding. The country is now vigorously developing rural areas. There are many subsidies for rural breeding, including silkworm breeding. So how much is the national subsidy for raising one acre of silkworms in rural areas? Which department should I apply to? Regarding the subsidy policy for rural mulberry planting and silkworm breeding in 2021, let's learn about it together. How much is the state subsidy for raising one mu of silkworms in rural areas? Subsidies for mulberry planting and silkworm raising in rural areas vary in subsidy methods and standards. For reference, please refer to the following: 1. Subsidies for four-year-old silkworms in poor households. Xincheng County, Guangxi, provides subsidies for silkworm farmers in poor households. In 2014 and 2015, the subsidy for households that withdrew from poverty to purchase four-year-old silkworms was 170 yuan/piece. From 2016 to 2019, the subsidy for households that have been lifted out of poverty was 220 yuan/piece, and the subsidy for households that are expected to be lifted out of poverty was 300 yuan/piece. The upper limit is 12 pieces of four-year-old commercial silkworms per household each year. 2. Subsidies for mulberry planting and silkworm house construction. The Wanning government in Hainan subsidizes the costs of agricultural materials such as mulch film and fertilizer used by farmers in the process of planting mulberry trees, as well as land mechanization and other expenses. The subsidy standard for registered poor households is 600 yuan/mu, and the subsidy standard for general farmers is 400 yuan/mu. At the same time, farmers purchase mulberry seedlings and young silkworms from the project company at the government procurement guidance price, and the government provides subsidies, of which 90% is subsidized for registered poor households and 70% for general farmers. In addition, a subsidy of 150 yuan/square meter will be given to the project company for building a standardized silkworm house demonstration base and farmers for building silkworm houses. 3. Subsidies for mulberry planting, silkworm rearing, mulberry seedlings, and silkworm houses. In the "Suggestions on Including Mulberry Planting and Silkworm Rearing in the Subsidies of Provincial, Municipal and District Government Agricultural Projects", Hainan Province recommends that governments at all levels include mulberry planting and silkworm rearing in the government agricultural project subsidies. The subsidy standard is to provide farmers with 200 yuan/mu for preparation for cultivation, 500 yuan/mu for mulberry seedlings, 250 yuan/square meter for silkworm houses, and 200 yuan/mu for silkworm tools. Disease prevention, silkworm medicine, and fertilizers can be subsidized at the discretion of local governments. Note: Different provinces have different standards for silkworm rearing subsidies. It is recommended to consult the local relevant departments for specific information. Which department should rural silkworm rearing subsidies be applied for? Rural silkworm rearing subsidies are agricultural subsidies, and the application departments include the Agricultural Bureau, the Agricultural Committee, the Agricultural Office, the Finance Bureau, the Agricultural Comprehensive Office, the Tourism Bureau, the Science and Technology Bureau, the Forestry Bureau, the Development and Reform Commission, etc. However, since rural silkworm rearing subsidies include silkworm rearing and mulberry planting, you can apply to the Forestry Bureau, the Agricultural Bureau's subordinate departments, the Planting Management Section, and the Fruit Tree Station. Generally, individual households raising silkworms in rural areas basically apply for subsidies in a centralized manner. If you are a large-scale breeder, you can go directly to consult and apply. Application conditions and procedures for rural silkworm subsidies Rural silkworm subsidies must first be applied for at the village committee, and then reported to the township government after acceptance and confirmation by the village committee. The application process is based on the four-year-old silkworm poverty-stricken households in Xincheng County. The specific subsidy application process is as follows: 1. Eligible silkworm poverty-stricken households apply to the village committee for consultation records・Answer to the national policy on raising oak silkworms in 2021. Many rural areas in the south are developing mulberry and silkworm industries. With the advancement of the "Belt and Road" in the new era, the development of the silkworm industry has ushered in new opportunities. Rural silkworm breeding can be integrated with the first, second and third industries. Silkworm cocoons can be used to extract silk, which is a precious textile raw material. It can be processed into silk quilts, macro-shed health pillows, etc. Mulberry trees that grow mulberry trees and raise silkworms can be picked and processed. One breeding and multiple benefits make many people want to develop silkworm breeding. The country is now vigorously developing rural areas. There are many subsidies for rural breeding, including sericulture. So how much is the state subsidy for raising one acre of silkworms in rural areas? Which department should I apply for it? Regarding the subsidy policy for mulberry planting and silkworm breeding in rural areas in 2021, let's learn about it together. How much is the state subsidy for raising one acre of silkworms in rural areas to cover the spring? Subsidies for mulberry planting and silkworm breeding in rural areas vary in subsidy methods and subsidy standards in various regions. Please refer to the following: 1. Subsidies for four-year-old silkworms in poor households. Xincheng County, Guangxi, subsidizes poor households to raise silkworms. In 2014 and 2015, the subsidy for households that withdrew to purchase four-year-old silkworms was 170 yuan/sheet. From 2016 to 2019, the subsidy for households that have been lifted out of poverty was 220 yuan/sheet, and the subsidy for households expected to be lifted out of poverty was 300 yuan/sheet. The upper limit is 12 sheets of four-year-old commercial silkworms per household per year. 2. Subsidies for mulberry planting and silkworm house construction The Wanning government in Hainan Province subsidizes the costs of agricultural materials such as mulch film and fertilizer used by farmers in the process of planting mulberry trees, as well as mechanized land cultivation. The subsidy standard for registered poor households is 600 yuan/mu, and the subsidy standard for general farmers is 400 yuan/mu. At the same time, farmers purchase mulberry seedlings and young silkworms from the project company at the government procurement guidance price, and the government provides subsidies, of which 90% is subsidized to registered poor households and 70% is subsidized to general farmers. In addition, a subsidy of 150 yuan/square meter is provided to the project company for the construction of a standardized silkworm house demonstration base and farmers for the construction of silkworm houses. 3. Subsidies for mulberry planting, silkworm breeding, mulberry seedlings, and silkworm houses In the "Suggestions on Including Mulberry Planting and Silkworm Breeding in the Subsidies of Provincial, Municipal and District Government Agricultural Projects", Hainan Province recommends that governments at all levels include mulberry planting and silkworm breeding in government agricultural project subsidies. The subsidy standard is to provide farmers with 200 yuan/mu for preparation for cultivation, 500 yuan/mu for mulberry seedlings, 250 yuan/square meter for silkworm houses, and 200 yuan/mu for silkworm tools. Disease prevention, silkworm medicine, and fertilizers can be subsidized at the discretion of local governments. Note: Different provinces have different standards for silkworm subsidies. It is recommended to consult the local relevant departments for specific information. Which department should I apply for rural silkworm subsidies? Rural silkworm subsidies are agricultural subsidies, and the application departments include the Agricultural Bureau, Agricultural Committee, Agricultural Office, Finance Bureau, Agricultural Comprehensive Office, Tourism Bureau, Science and Technology Bureau, Forestry Bureau, Development and Reform Commission, etc. However, since rural silkworm subsidies include silkworm breeding and mulberry planting, you can apply to the Forestry Bureau, the Agricultural Bureau’s branch planting management department, and the fruit tree station. Generally, individual rural silkworm subsidies are basically applied for in a centralized manner. If you are a large-scale breeder, you can go directly to consult and apply. Application conditions and process for rural sericulture subsidies: First, you must apply to the village committee for rural sericulture subsidies, and then report to the township government after acceptance and confirmation by the village committee. The application process is based on the four-year-old silkworm poverty-stricken households in Xincheng County. The specific subsidy application process is as follows: 1. Eligible poor silkworm households apply to the village committee 2. The township government conducts full coverage acceptance of the applicants reported by the village committee within its jurisdiction, and fills in the application summary form for the four-year-old silkworm support project plan, and reports to the county agriculture and rural bureau after public announcement without objection. 3. The county agriculture and rural bureau summarizes the four-year-old silkworm support project plan application summary form reported by each township, and reports to the county people's government for approval and full payment of reward and subsidy funds.

1. Site and tree species selection Spring oak silkworm seedling farm should be selected in the sunny southeast mountainside area that can avoid the strong southwest wind and the cold current of the north wind during the spring silkworm period. The area is 2 mu (1 mu - 667 m2) per spring silkworm. Remove the weeds and cut the shrubs in the field before sowing. It is advisable to choose oak (Quercus acutissima) and Liaodong oak with good leaf quality, early germination and vigorous tree vigor. 2. Collection of acorns for sowing and seedling raising: ① Select the mother tree for seed collection: Before collecting acorns, first investigate the distribution of the mother tree for seed collection, the maturity period of acorns and the fruiting situation of the year, and then organize manpower to collect. When collecting seeds, pay attention to selecting the mother tree for seed collection, which is about 30 years old, strong and healthy, and free of diseases and insect pests. ② Collect in batches: When the acorns are ripe, the peel changes from green to beige, and the cupule and the fruit are naturally separated. Because acorns are prone to acorn weevils, which eat the cotyledons, they should be collected in batches after they mature, early-ripening ones early and late-ripening ones late, so that the acorn pests can be killed in time. ③Seed registration: In order to use acorns legally, they must be registered, including tree species, batches, time, quantity, yield, and ecological conditions of the origin.