Before the storage of the contaminated seeds, the stems, leaves, weeds, sand, soil particles and other debris in the crops shall be thoroughly removed, and the storage rooms and utensils shall be strictly disinfected to prevent the seeds from being contaminated during the storage. Anti-moisture seed bags should not be placed directly on the ground, otherwise they will be damp and reduce the germination rate. Use masonry or wood to raise the seed bag more than 50 cm. Store room should pay attention to ventilation. The key to anti-mildew and mold control is to control the moisture contained in the seeds themselves. Cereal crop seed moisture content of 12% -13%, oil crop seeds 8% -9%. If the water content is too high, mildew is easy to occur, especially for peanuts, soybeans, corn and other crop seeds containing more oil and starch. Anti-high temperature temperature is too high, the seed respiration is vigorous, it will consume too much of its own stored nutrients, and reduce the germination rate. Therefore, it is best to store seeds at an ambient temperature of about 10°C and avoid placing seeds near the stove. Anti-asphyxiation seeds cannot be stored in plastic bags. Because the plastic bags are airtight, the seeds are forced to undergo anaerobic respiration in the bags, producing toxic substances such as alcohol and organic acids, killing the embryos, causing the seeds to lose their ability to germinate. Mildew. Anti-smoke and smoked seeds are fumigated by the smoke for a long time, which will reduce the activity of seeds and weaken the germination rate. Therefore, the room with large smoke can not store seeds, storage room should not be close to the kitchen. It is not easy to distinguish the seeds of a lot of crops from the general edible foods. Insect pests and mice not only directly eat the seeds, but also contaminate the seeds, deteriorate the seeds, and reduce the germination rate. Therefore, we must take appropriate measures to eliminate pests and rats. Anti-corrosion seeds can not be stored in the same room as pesticides and fertilizers, because many pesticides and chemical fertilizers have strong volatility, they are easily adsorbed on the seed surface, penetrate into seed cells, and corrode seeds. China Agricultural Network Editor