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选用农药应根据作物和防治对象、施药机具和使用条件决定选择的剂型及制剂。杀虫剂和乳油效力要显著高于悬浮剂和可湿性粉剂,同一种农药有效成分以选用乳油为好,叶面喷雾用的杀菌剂宜选择悬浮剂或可湿性粉剂。叶面喷洒用的除草剂以含有机溶剂的乳油、浓乳剂、悬浮剂等剂型为好,具有良好润湿和渗透作用的可湿性粉剂、悬浮剂等剂型也可选用;施用于水田田
Selection of pesticides should be based on crop and control objects, pesticides and the use of equipment to determine the choice of formulations and preparations. Insecticides and emulsifiable concentrates should be significantly higher than those of suspending agents and wettable powders. The same kind of active ingredients of pesticides should be used as emulsifiable concentrates, and the foliar spray disinfectant should be selected as suspending agent or wettable powder. Foliar spray herbicide to organic solvent containing emulsifiable concentrates, concentrated emulsions, suspending agents and other dosage forms as well, with good wetting and infiltration of wettable powders, suspensions and other dosage forms can also be used; applied to the paddy field