How to prevent the occurrence of young silkworms and lost silkworms and increase the yield of silkworms?

The cocoon yield is not only related to the weight of single cocoon, but also largely depends on the number of larvae and lost silkworms, so it is an effective measure to prevent the occurrence of young silkworms and lost silkworms in the process of rearing.

1. Reasonable temperature and humidity

Reasonable temperature and humidity should be maintained in the young silkworm stage, low temperature should be prevented in the 1st and 2nd instar, with 27C as the center, the difference between dry and wet is 0.5C, the difference between dry and wet is 25C, the difference between dry and wet is about IC, the difference between dry and wet in the 4th instar is 24025C, the difference between dry and wet is 1-1.5C, the temperature is too high and low, and the low temperature and low temperature are easy to occur.

Second, select good leaves

The leaves used for collecting silkworms and 1-2 instar silkworms should choose suitable mature and tender leaves, fresh leaves, and forbidden old and immature leaves, otherwise it is easy to form small noodles. We should also choose fresh and tender mulberry leaves to feed silkworms during the mid-feeding period and high-eating period.

Third, the silkworm seat is sparse and even.

The distribution of silkworm eggs is uniform and sparse properly, which can not only promote individual development, but also make silkworm body develop neatly and healthily. The silkworm pedestal area of each silkworm is as follows: 1-year-old 1.1-m2, 2-year-old 2.2-m2, 3-year-old 5.5-m2, 4-year-old 16-m2, 5-year-old 35m2, too dense silkworm head affects silkworm eating mulberry. The size of the cut leaves and the amount of mulberry should be appropriate. Too much cutting leaves and too much mulberry are easy to produce floating surface, and nibbling the residual mulberry will form weak silkworms. At the same time, when expanding the seat, we must keep the silkworm seat flat, especially in front of the expansion seat, do not turn the silkworm seat randomly, in case the silkworm falls from the lower layer, and the silkworm is not eaten enough to form young silkworms.

IV. Raising and raising in batches

When more than 95% of the silkworms go to sleep, coke bran can be used to stop mulberry for a small number of green-headed silkworms, and a small amount of mulberry leaves can be added to the net. when the green-headed silkworms eat leaves on the Internet, the net will be removed and reared separately to prevent silkworms from being weak due to hungry sleep.

Fifth, timely rates of food

Rates eat too early, early and late to nibble mulberry, which can easily lead to uneven development of silkworms. Pay edible leaves should be fresh and tender and feed them evenly to prevent the formation of weak silkworms.

VI. Photosensitive ventilation

Half an hour before the mulberry, open the silkworm film for photosensitive ventilation, at the same time do a good job in the replacement of the silkworm plaque, inside and outside, and strive for uniform light to prevent the occurrence of floating silkworms and lost silkworms. 7 commonly used coke bran lime

In the rearing of 1-2-year-old silkworms, Panax notoginseng coke bran (that is, three parts of lime and seven parts of coke bran) is often used before mulberry, which not only plays a role in drying, but also plays the purpose of disinfection and disease prevention, but also can promote silkworm not to eat residual mulberry leaves and reduce the occurrence of sticky silkworms.

In addition, sleep removal, removal must be carefully operated to reduce the loss of silkworms. If the silkworm is underdeveloped, the silkworm sand after removal should be temporarily spread out on the ground, and the late-sleeping silkworms should be induced with fresh mulberry leaves and carefully reared separately.

All right, this is how to prevent the loss of silkworms from young silkworms. Friends who like can follow Tuliu.com. I'll see you next time.