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(一)药害成因 除草剂对作物产生药害的原因很多,但主要是使用技术、药剂、农作物、环境条件。 1.使用不当 (1)过量使用或误用 在无专业人员指导下任意加大单位面积使用量,或搞错药名造成误用。 (2)田间作业不当 使用除草剂后,不要轻易破坏药土层,否则不但影响药效正常发挥,且易造成药害。加稻田使用扑草净后又下田进行其它作业,易使药剂接触稻根造成药害。 (3)器械使用不当 田间作业对喷雾器械缺乏精确调试,喷嘴流量不均及重叠喷洒和药械清洗不彻底,从而对作物产生药害。
(A) causes of injury The herbicide crop injury caused by many reasons, but mainly the use of technology, pharmaceuticals, crops, environmental conditions. 1. Improper use (1) excessive use or misuse In the absence of professionals under the guidance of arbitrarily increase the amount of use per unit area, or mistaken name of the drug caused misuse. (2) improper field operation After the use of herbicides, do not easily destroy the soil layer, otherwise not only affect the normal effect of efficacy, and easy to cause injury. Add paddy field after the use of prometryne and the field to carry out other operations, easy to make medicine contact with rice roots cause injury. (3) improper use of equipment field operations on the lack of precision spray equipment, nozzle flow and overlap spray and cleaning incomplete, resulting in crop injury.