Tuyuan, also known as earthworm, earthworm, etc., its cold, taste salty, toxic, with prolactin, stasis analgesic and other functions, is an important Chinese herbal medicine. The artificial breeding of earth elements is a low-cost, high-yielding household sideline, and its farming and processing techniques are now used as an introduction.
First, build a pit
With an area of ​​3.5 meters long and 0.5 meters wide, 5 pits can be built, each of which is divided into 5 layers with cement boards. There are a total of 25 pits. Each pit has an area of ​​0.33 square meters. wall. Breeding soil available sand, clay or loam. After the soil is crushed, a small amount of ash is mixed to make the water content about 20%. The cultivating soil of 1-4 nymphs should not exceed 6.7 cm, and nymphs and adults over 5 instar should be 10 cm.
Second, feed
Concentrates are preferably wheat bran and rice bran, and roughages are preferably skunk oak leaves and eucalyptus leaves, and are also available in grasses, leaves, and peels. For 1-4-5 instar nymphs, put some dry soil on the surface of the feeding soil and sprinkle the concentrate on top. For nymphs and adults over 5 years of age, a layer of 3.3 cm thick rice hulls can be sprinkled on the surface of the feeding soil and then sprinkled with fine and green material.
Third, feeding and management
The breeding density of earth elements can be kept at 9 kg per square meter. Because of its habit of eating eggs, the density cannot be too high. From June to September, feed daily. Feeding in the morning is good, and the other months can be fed 1 time every other day. When tanned, feed less or not feed concentrate. Keep the darkness in the rearing pit, and leave a small hole with a length of 3.3 cm in each of the upper left corner and the lower right corner. When the temperature is higher than 380C, open the pit door to cool down. Winter and spring cold seasons can be raised by artificial warming, do not allow the earth element to hibernate, so that one year can produce two commercial insects. Artificial heating, the temperature is maintained at 27---320C. You can.
Fourth, artificial breeding
The earth element must be spawned, nymph, and adult to complete one generation. It takes about 8 months for males to mature and 9-11 months for mature females. From June to October, the mating period was 1 week after the females were mated. For artificial egg-planting, put a pottery vat in a large aluminum boiler, and then mix the egg mash and egg slurry and put it into the pot. Add water between the pot and pot, and heat the pot to maintain the water temperature at 32-350C. Nymphs can be hatched after 40-60 days.
V. Harvesting and Processing
In order to increase the product rate, male nymphs can be soaked in the same process as female adults. Males should be soaked and processed except for retaining seed. Female nymph body weight was the highest when 9--11 years old, and the drying rate was about 40%. The dryness rate of male nymphs at age 8 was about 30%. At this time, the economic benefits of harvesting are higher. The specific time is until late winter from late August. Fresh insects are washed and dried after being soaked to death. They are finished products.
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