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在生产上,当农田杂草长得多时,施用除草剂的目的是为了防除杂草而不伤害作物,但由于杂草和作物都是植物,而杂草往往又是多种混生的,在不同作物田中一般都有一种或几种主要杂草,所以在施用除草剂时应根据作物种类,主要杂草种类及环境条件三个方面的因素进行选择。一、影响除草剂施用效果的原因。1.杂草杂草是除草剂的作用对象,其生育状况肯定影响除草剂的除草效果。由于不同的除草剂对杂草的作用部位,作用方式都不尽相同,这样针对不同的除草剂,应在杂草的不同生育期施用,才能充分发挥除草剂的效果。如氟乐灵,灭草猛等
In the field of production, when weeds grow much longer, the purpose of applying herbicides is to control weeds without harming the crops, but because weeds and crops are plants, and weeds are often mixed in a variety of different Crops generally have one or more major weeds in the field, so herbicides should be selected according to crop type, the main weed species and environmental conditions in three aspects of the choice. First, the impact of herbicide effect of the reasons. 1. Weeds Weeds are the role of herbicides, their reproductive status will certainly affect the herbicidal herbicidal effect. Because of different herbicides on the role of weed sites, the mode of action is not the same, so that for different herbicides should be weed in different growth stages of the application, in order to give full play to the effect of herbicides. Such as trifluralin, fierce grass fiercely