信阳地区开展化学除草多年,对保证全区农业丰收起到了重要作用。我们经过实践体会到:除草剂的合理混配施用,是一种经济、有效的方法,应大面积推广应用。一、除草谱广,防除较果佳。就大多数除草剂而言,都具有较严格的选择性。倘若把不同除草谱的除草剂混用,即可扬长避短,互为补充,防除更多的杂草。比如,在水稻返青期,单用除草醚,仅能防除稗草、牛毛毡等,但如果与2甲4氯混用,不仅能有效地防除稗草、牛毛毡,而且可以防除野荸荠、三棱草等双子叶杂草,收到事半功倍的效果。二、减少药害,对作物安全。实行除草 Xinyang carry out chemical weeding for many years, to ensure the region’s agricultural harvest has played an important role. We have come to realize through practice: a reasonable mix of herbicides, is an economical and effective method, should be large-scale promotion and application. First, weeding spectrum, prevention and control more fruitful. For most herbicides, there is a more stringent selectivity. If the herbicides with different weeding spectrum mixed, you can avoid weaknesses, complement each other to control more weeds. For example, in the rice rejuvenation period, herbicides alone can only control barnyard grass and bovine blankets. However, if used in combination with 2-methyl-4-chloro-4-chloro, it not only can effectively control barnyardgrass and cattle blankets, but also can control wild water chestnuts, Grass and other dicotyledonous weeds, get a multiplier effect. Second, reduce phytotoxicity, crop safety. Weeding