一看药膜湿展性能。湿展性是指农药药液喷洒到作物表面或在害虫体上后能否湿润并充分展开,取少量药剂配好后涂洒于作物枝叶上作试验,凡能形成药膜、药液流失少的则具有良好的湿展性能,反之较差。在使用湿展性偏差的杀虫剂时(如植物性农药水剂)可向药液中添加少量的中性洗衣粉,以增强湿展性能。二看药剂粘着效果。优质农药一般都具有良好的粘着性,但乳化性能不好的杀虫乳油及粉剂粘着性能较差,所以,为了提高药液的粘着效果,使用粉剂杀虫剂的时间以选择在早晨植株表面有露水时喷 A look at the film wet spreading performance. Wet expansive refers to pesticide liquid sprayed onto the surface of the crop or in the pest body can wet and fully expanded, take a small amount of medicament with a good spread on the crop foliage for testing, who can form a thin film, less liquid loss Of the wet show has good performance, on the contrary worse. When using wet-spreading biased pesticides (such as botanical pesticides), a small amount of neutral detergent may be added to the solution to enhance wet spreading performance. Second, see the effect of drug sticking. Good quality pesticides generally have good adhesion, but poor emulsifying properties insecticide EC and powder adhesion performance is poor, so, in order to improve the adhesive effect of the liquid, the use of pesticide powder time to select the surface of the plant in the morning there When dew spray