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(1)选用速效性农药速效性农药的毒杀作用快,使用后1至2小时便可杀死害虫。如敌敌畏、久效磷、辛硫磷等有机磷农药.(2)适当加大用药量湿度是影响药效的关键因素之一.湿度高会影响农药的有效浓度,用药剂量要加大些.(3)选用内吸性农药这类农药使用后一般4至5小时,便会被作物吸收到组织内部,即使再下雨仍可把害虫及病菌杀死,如甲拌磷、氧化乐果、久效磷、快杀
(1) Quick-acting pesticides Quick-acting pesticides can kill insects rapidly after 1 to 2 hours of use. Such as dichlorvos, monocrotophos, phoxim and other organophosphorus pesticides. (2) Appropriate to increase the dosage of humidity is one of the key factors that affect the efficacy of high humidity will affect the effective concentration of pesticides, dosage should be increased. (3) the use of systemic pesticides such pesticides used after the general 4 to 5 hours, it will be absorbed into the organization within the crop, even after the rain can kill pests and germs, such as phorate, omethoate, Monocrotophos, kill faster