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本试验采用粮食边入库边用防虫磷机械喷雾的方法,利用冬季自然低温,结合机械通风降温,减少药剂用量来延长对害虫的有效防虫期,降低费用及粮食中药剂残留量。试验结果表明:防虫磷剂量为20mg/kg时结合机械通风降温对玉米象有效防治期为9个月以上,对谷蠹为6个月以上,比不通风仓防治玉米象和谷蠹可节约防虫磷用药量33％～50％。
In this experiment, the pesticide spraying pesticide spraying method was used in the experiment. The natural low temperature in winter was used in combination with mechanical ventilation and cooling to reduce the dose of pesticide to prolong the effective pest control period and reduce the cost and residual amount of pesticide residues in grain. The results showed that when the pesticide dose was 20mg / kg, the effective ventilation and cooling of mechanical ventilation to maize was more than 9 months and the pest was more than 6 months, which could save insect pest Phosphorus dosage 33% ~ 50%.