河南麦田杂草近几年来发生危害程度呈上升趋势,它与作物争光、争水、争肥,严重影响了小麦正常生长发育,一般造成小麦减产10～30％,重则在50％以上,成为小麦生产上的严重问题。 河南麦田杂草据调查有241种及变种,隶属45科。但危害严重的有近20种,阔叶杂草有播娘蒿、猪殃殃、离蕊荠、荠菜、田紫草、刺儿菜、旋花、泽漆、婆婆纳、藜、萹 In recent years, the degree of harm of weeds in Henan has been on an upward trend. It competes with crops, competes with water and fights for fertilizers, which seriously affects the normal growth and development of wheat and generally reduces the yield of wheat by 10-30% and more than 50% while becoming a A serious problem in wheat production. There were 241 species and varieties of wheat weeds in Henan Province, belonging to 45 families. But there are nearly 20 kinds of serious damage, broadleaf weeds are broadcast Artemisia, Galium aparine, from water chestnuts, shepherd’s purse, Tian Zi Cao, Crab vegetables, spinach, Ze lacquer, Veronica, Chenopodium album,