论文部分内容阅读
一、合理使用除草剂,提高除草效果。化学除草的目的,就是防治杂草,保护作物,提高作物的产量和质量。为了提高防除杂草效果,除了应当了解除草剂本身应用的特殊性外,还应了解影响除草效果的因素,提高除草效果。(一)选择合适的除草剂种类每一种除草剂其作用机制,防治对象和除草效果是不同的,选择合适的除草剂,是提高除草效果的前提。如:氟乐灵只对杂草幼根和幼芽有抑制作用,对大草无效;对禾本科杂草效果好,对双子叶杂草效果就差一些,尤其对龙葵、荠菜效果不好,所以在应用氟乐灵时,
First, the rational use of herbicides to improve weeding effect. The purpose of chemical weeding is to control weeds, protect crops and increase the yield and quality of crops. In order to improve the weed control effect, in addition to the particularity of application of the herbicide itself, we should also understand the factors that affect the weeding effect and enhance the weeding effect. (A) the choice of a suitable type of herbicide Each herbicide its mechanism of action, control and herbicides are different, the choice of appropriate herbicides, is to improve the weeding effect of the premise. Such as: trifluralin only weeds and sprouts young root inhibition, on the big grass is invalid; good effect on grass weeds, dicotyledonous weeds will be worse, especially for solanum, shepherd’s purse effect is not good, Therefore, when using trifluralin,