Key points of rearing large silkworm in autumn

The main reason for the instability of autumn silkworm production is silkworm disease. With the increase of the number of times, the number of disease sources and the spread surface increased, the virus was fresh and multiplied rapidly, and the pathogenic rate was high. After the silkworm room and silkworm tools have been used for many times, if the disinfection is not thorough, relax the feeding management, in addition, the silkworm is in the harsh environment of high temperature, high humidity or high temperature and drying in autumn, the quality of mulberry leaves is poor, and the disease resistance of silkworm is weak, all these are the main reasons for the outbreak of silkworm disease in autumn.

1. Strengthen disinfection and disease prevention and eliminate the source of disease

The effective measure to prevent silkworm disease is disinfection and put an end to the opportunity of disease transmission. When silkworm disease occurs, the source of the disease must be isolated immediately, more lime or dry materials must be sprinkled, and the number of sand removal must be increased. If it is viral silkworm disease, disinfect silkworm pedestal with fresh lime powder every day, which can reduce silkworm seat infection. If it is bacterial silkworm disease, can use chloramphenicol to add food. If it is stiff disease, can use anti-stiff powder to carry on silkworm body disinfection. If you are sick, you can use "killing silkworm flies" to spray silkworms or add food. The standards and methods must be strictly mastered when using medicament.

Second, eat sparsely and be full to prevent hunger

During the big silkworm period, it is required to grasp the "three sparse", that is, the indoor silkworm table is thin, the silkworm foil is thin, and the silkworm head is thin inside the silkworm foil. The temperature is high and dry in autumn, so mulberry leaves can be sprayed with water. But silkworms do not feed wet leaves as soon as they sleep or when they are old and mature at night. The wet leaves are moist without dripping. And strengthen ventilation. Silkworm farmers have the experience of "raising silkworms in autumn by the wind". If there is no wind outside, fans can be used to circulate the air. Pay attention to the supply of mulberry, especially in the eating period, in the middle of the two mulberry replenishment, good mulberry full food.

Third, strengthen the treatment of sleep, strictly promote and batch.

The old and tender mulberry leaves are uneven in autumn, and it is easy to sleep unevenly. With unhealthy silkworms, irregular sleep is also easy to occur. If the sleep is uneven, it must be promoted in batches to eliminate the unhealthy dormant silkworms and young silkworms.