在小麦生产中,大多数农民习惯在春季使用麦田除草剂,这时候草龄过大,杂草根壮叶厚,抗药性较强,加之麦田郁闭度增大,喷施除草剂量大,即费工又费钱,防除效果不仅不理想,而且容易对后茬作物(如花生和棉花)造成药害。 In wheat production, most farmers are accustomed to using wheat field herbicides in spring. At this time, grass age is too large, the thick roots of weeds grow thick and the drug resistance is strong. In addition, the canopy density increases and the amount of herbicide sprayed is large, that is, It takes a lot of work and money, and the control effect is not only unsatisfactory but also easy to cause phytotoxicity to the following crops (such as peanut and cotton).