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1)农药品种选用不合理。不同类型的农药对不同蔬菜的药害程度不同。如有机氯杀虫剂对瓜类易产生药害。2)农药不同剂型产生药害可能性大小存在差异。不同剂型的农药产生药害的可能性大小不同。通常是油剂>乳油>可湿性粉剂>粉剂>乳粉>颗粒剂。
1) unreasonable choice of pesticide varieties. Different types of pesticides on different vegetables different levels of injury. Such as organochlorine pesticides on melons prone to injury. 2) There are differences in the possibility of pesticide damage caused by different pesticide formulations. Different formulations of pesticides have the possibility of injury of different sizes. Usually oil> EC> WP> Dust> Milk powder> Granules.