How to choose the seed of Tuyuan? What are the hatching methods of Tuyuan seedlings?

Tuyuan, also known as Trionyx sinensis, Trionyx sinensis, etc., is a kind of cold-resistant and heat-resistant insects, likes to live in groups, grows in remote, moist, loose, fertile soil, and has the habit of eating day and night. With the development of the medicinal value of Tuyuan, many farmers are raising Tuyuan artificially, and each growing period of Tuyuan is generally 7-9 months, so how to choose species? What are the hatching methods of Tuyuan seedlings? Next, let's have a look with the editor.

First, how to choose the seed of Tuyuan?

Tuyuan naturally mated and propagated for a long time, and the offspring degraded year by year. The worm body becomes smaller, the physique becomes worse, the spawning rate decreases, and the egg sheath individual becomes smaller and smaller. In order to be beneficial to the reproduction and development of soil element and to ensure the quality of insect body, we must do a good job in seed selection. To choose a large, fast, strong, glossy back, full belly, oblong female as the female. Male insects should be exchanged and introduced with other farmers. Species and insects must also be raised separately, and usually they often do a good job of selecting the best and eliminating the bad. In this way, the offspring can grow normally and the yield of soil can be increased.

Second, what are the hatching methods of Tuyuan seedlings?

1. Hatching of eggs

Put the egg sheath in the incubator (or pool) to hatch. The egg sheath was first soaked in 5000-fold solution of potassium permanganate for 1 minute and then dried, and the hatching soil was also mixed and sterilized with 1000-fold bromogeramine solution before drying. When hatched 0, the ratio of soil to egg was 1 ∶ 1. The soil water content is 25%-30%, and the temperature is 22-32-℃. During the incubation period, there is a slight difference in temperature and humidity in the earlier and later stages, which is slightly lower in the previous period and slightly higher in the later stage.

2. Feeding density

Tuyuan likes to live in groups and can be raised with high density, but the feeding density should not be too high. The feeding density per square meter is as follows: 6000 × 10 000 nymphs at 3rd instar, 3000 × 5000 nymphs at 4th instar, 1500× 2000 at 7th and 9th instar, 100000× 1100 at 10th and 11th instar, and 040000000 at 0,0,500 at 3rd instar and 6th instar.

3. Feed feeding

Feed should be "green essence collocation, mainly green". Feeding time should be in the evening, select a variety of clean fresh leaves, vegetable leaves and wheat bran, evenly sprinkled into the pool or box, for 0 yuan 0 free feeding. Feed coarse feed once every 4 days and concentrate once every 7 days. The concentrate should be enough to eat. Also need to feed a variety of peel, melon peel and other succulent feed. Due to the difference of worm size, the amount of food intake and the depth of soil layer are different, so the feeding method and quantity are also different. The 1st and 2nd instar nymphs look for food on the surface of the feeding soil, and the material can be scattered on the topsoil, partial to the surrounding of the pit, green fodder can be added after the 2nd instar, and the nymphs above the 5th instar can be unearthed to find food, sprinkle a layer of rice husk on the surface of the fodder soil, and then spread plastic sheeting or wood, on which the concentrate is placed.

4. Castration

Male adults cannot be used in medicine, and males can be used in the last few years before they grow into wings. In breeding, males generally account for 30% of the total number of insects, and as long as 5% of males are kept to meet the mating needs. Therefore, when most nymphs reach 7-8 years old, the surplus male nymphs can be singled out and treated as medicine.

5. Collect egg sheath

Tu Yuan has the habit of eating egg sheath by itself, especially when the feed is insufficient, it can cause a lot of loss of egg sheath. Therefore, the egg sheath should be taken out in time and placed in the incubator (or pool) to hatch. Generally, the egg sheath is collected every 15 days. When collecting, the adults can be screened out with a 2-mesh screen, and then the egg sheath can be screened out with a 6-mesh screen.

The above is the introduction of Tuyuan seedlings. Under the conditions of suitable temperature and moisture, the egg sheath of Tuyuan generally hatches worms after 40-60 days, and 30-35 ℃ is the best temperature for hatching. The key to artificial incubation of Tuyuan seedlings is to master the temperature, humidity and egg sheath turning. I hope the above contents can be helpful to Tuyuan farmers.

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