一、除草剂使用面临的问题当前农田化学除草工作主要面临着以下一些新情况、新问题:1.一些地方对杂草造成的农业生产巨大损失重视不够,化学除草工作开展得不够平衡。2.农田杂草种群演替频率加快,难治杂草发生为害日趋严重,增大了化学除草 I. Problems in the Use of Herbicides The current chemical weed control in farmland mainly faces the following new situations and new problems: 1. In some places, the huge loss of agricultural production caused by weeds has not been given enough attention and chemical weeding has not been well balanced. The frequency of succession of farmland weed population is accelerating, and the incidence of refractory weeds is more and more serious, increasing the chemical weeding