When the average room temperature is around 23°C, the silkworm generally needs 8 days of mulberry leaf for the 5th instar period, and when it is found in the later period of spring silkworm, it often encounters high temperatures. The room temperature during the day exceeds 28°C, resulting in accelerated development of the silkworm and a shortened age. 1 Days or so. In this case, silkworms are fed according to conventional methods. The amount of mulberry eaten by silkworms is reduced and the body weight is light, which will inevitably affect the yield and quality of silkworm cocoons. Therefore, when the spring silkworm encounters high temperatures in the later period, contingency measures should be taken to prevent production loss. 1, increase to mulberry or to mulberry number according to the weather forecast, the 5th instar will be the original planned 8 days of mulberry to 7 days feeding, that is, each time the mulberry than the normal amount of leaf feeding increased by about 20%, or Every class increases the class back to feed the leaves. 2. Prevent mulberry leaves from drying out. From 10 a.m. to 4 p.m. in the afternoon, if the doors and windows of Jamsil are all opened, the relative humidity in the silkworms will decrease to below 40%, causing the mulberry leaves to dry up and reducing the quality of the mulberry leaves. This silkworm room should prevent strong winds from blowing straight. After each day of feeding the leaves, it should be closed for 4-5 hours. After the mulberry leaves eat about 70%, the doors and windows are opened again. When leaves are fed before and after noon, if the mulberry leaves are relatively dry, appropriate amount of fresh water may be sprayed on the mulberry leaves. 3, when the high-temperature sand removal, easy to ferment silkworms, silkworms dirty, easy to cause bacteria breeding, silkworm infection. Therefore, sand should be removed once a day.
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