1, grain is still in the field, itself with Mi Chong's eggs. The starch content in rice is very high, because the water activity value in rice is very low, that is, its water content is very small, and the growth and development of eggs need water. When the temperature reaches 20℃-40℃ and the humidity reaches 65℃-95℃, it only takes one week for the eggs to hatch.

2. Every household buys rice every year, and insects are born every year. Some eggs are hidden in the bottom of rice jars, seams in rice bags, cracks in walls and cracks in the ground, and it is difficult for people to remove them one by one. When there is rice at home and the climate is suitable, these eggs hatch out and climb into rice bags, and they begin to cultivate the next generation again.

Extended data:

Rice preservation skills

1, tie the rice tightly to the bag mouth and put it in a cool and dry place, and the rice can be stored for a long time. If conditions permit, you can put the rice in a plastic bag or a fresh-keeping box, tie the bag tightly and store it in the refrigerator. This will keep the rice fresh and free from insects.

2. Zanthoxylum bungeanum is a natural antioxidant with special fragrance and insect repellent effect. Wrap a few packets of pepper in gauze, put them at the top, middle and bottom of rice bag, tie the bag mouth tightly, and put the rice bag in a cool and ventilated place to prevent rice from being infected with insects.

3. Because dried kelp has strong hygroscopicity, it plays the role of killing insects and inhibiting mold. Put some dried kelp in rice, the ratio of rice to kelp is about 100:1,take it out every10 days or so, dry it in the sun, and then put it back into the rice jar. This method can be used repeatedly and can effectively prevent rice from mildew and insects.

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