(1) Keep the warehouse clean and hygienic. Requirements: There are no holes and seams within 3 meters outside the warehouse, equipment, accessories, inspection tools and mechanical equipment, there are insect-proof lines at the door, no garbage, weeds and stagnant water, so as to be neat and free from eggs.
(2) Clean and disinfect in time. Before the seeds are put into storage, the warehouse should be cleaned, disinfected with dichlorvos and trichlorfon spray, sealed for 72 hours and ventilated for 24 hours.
Table 3 Types and dosage of cleaning and disinfection drugs
(3) Physical and mechanical methods are used for prevention and control. Seed exposure, winnowing, screening, etc. Used to destroy stored insects.
(4) Chemical agents are used for prevention and control. Prevention and control of aluminum phosphide: When fumigating seeds with aluminum phosphide, the fumigation times shall not exceed two times within the moisture range specified in the seed grading standard. According to the seed volume, the dosage is 4 ~ 6g/m3 powder and 6 ~ 9 tablets /m3 tablet; According to the volume of storage space, the powder is 2 ~ 4g/m3 and the tablet is 3 ~ 6 pieces /m3. The dosage should be determined according to different crops, insect population density and stacking form. It must be evenly distributed during administration, so as to improve the efficacy and prevent excessive internal heat. After administration, it was sealed 120 ~ 168 hours and vented for 72 hours. Fumigation should strictly follow the fumigation operation rules and do a good job of safety protection. Prevention and control of pests and diseases Phosphorus prevention and control: high-quality malathion is used to prevent and control pests and diseases, the purity is above 97%, and the effective dose is 20 mg/kg. The use method is to spray the pesticide phosphorus stock solution evenly with an ultra-low sprayer. The seed thickness is not more than 30 cm, and the dosage is 0.2 kg per 10,000 kg of seeds.