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近年来,由于农田病虫草害发生比较普遍,大量使用农药,而大多数农民又没有掌握正确的使用技术,造成农田大范围发生药害,主要表现为作物出现斑点、黄化、畸形、枯萎、脱落,严重者整个植株枯死。为避免产生药害可采取以下措施: 一、严格掌握农药使用技术: 1.合理选用农药。选用的农药既要对防治对象有较好的防治效果,又要求对作物安全。因此选用时要注意作物的敏感性,不可使用对作物敏感的农药,如2,4—D对棉花较敏感,敌敌畏对高粱、玉米易产生药害。
In recent years, due to the widespread occurrence of pests and diseases in farmland, pesticides are widely used, and most peasants fail to grasp the proper use of pesticides, resulting in a wide range of pesticide damage in farmland. The main manifestations are crop spotting, yellowing, deformity, Fall off, in serious cases the entire plant died. In order to avoid phytotoxicity can take the following measures: First, strictly control the use of pesticides: 1. Rational use of pesticides. Selection of pesticides should not only have a good control effect on the prevention and treatment of objects, but also requires the safety of crops. Therefore, the selection of crops should pay attention to the sensitivity, not sensitive to crop pesticides, such as 2,4-D is more sensitive to cotton, dichlorvos on sorghum, corn prone to injury.