Key points of prevention and control of silkworm poisoning
After pesticide poisoning, silkworms generally have symptoms such as random crawling, chest enlargement, raising, spitting, trembling and shortening of silkworm body.
After organophosphorus pesticide (trichlorfon, dichlorvos, etc.) poisoning, the belly foot of silkworm twitched, the front half of the body expanded and elongated, the back half of the body shrank, especially the tail shortened and tilted to the back.
Organic nitrogen pesticides (chlordimeform, Shachongshuang, etc.) poisoning, mainly for silk spinning, crawling to the edge of the silkworm seat, obvious anti-feeding, after a period of crawling, the chest transparent, slowly died. It does not decay immediately after death, and the skin is wrinkled.
Precautionary measures:
In order to control pests in mulberry garden, pesticides with short residual period must be used.
For mulberry gardens that have been sprayed with pesticides with a long residual period, leaves should be collected and fed in advance in order to ensure safety.
Prevent mulberry leaves from being contaminated when crops near mulberry fields are sprayed to control insects.
At the same time, it is necessary to strictly prevent silkworm rooms, silkworm tools and supplies from coming into contact with pesticides.
After exposure to pesticides, sericulturists must wash carefully and change their clothes and shoes before entering the silkworm room to operate.
When silkworms are poisoned, coke bran should be sprinkled in time, net should be added to remove sand, and non-toxic mulberry leaves should be fed. At the same time, we should open the doors and windows, strengthen ventilation and try to save silkworms or mildly poisoned silkworms.
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Scientists solve the mystery of flying snake "flying"
You may not be able to imagine how snakes can "fly" like birds without wings or wing membrane-like appendages. However, scientists have found that some snakes can not only fly, but also be good at flying. Flying snakes shake their ribs to generate power Jack Soka of the University of Chicago has been studying the ability of snakes to fly for eight years. Recently, Sokka revealed in a professional magazine why Flying Snake is good at flying. "although the flying snake lacks a wing membrane-like attachment," he said.
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It is good for rabbits to drink bean cake water.
Cut up the bean cake and boil it with water, filter out the residue, and add 1% salt to the filtrate for rabbits to drink. Male rabbits have good hair and fat after drinking bean cake water, and mating can improve the conception rate of female rabbits. After drinking soybean cake water, the milk secretion of lactating female rabbits can be increased by 28%. The baby rabbits grow vigorously after drinking bean cake water, and the weight after weaning can reach 650g to 750g, which is 22.5% heavier than drinking water.
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