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棉花由露地栽培发展为覆盖栽培后,由于生态条件的变化,草害加重,直接影响着覆盖的增产效益,为此我们近年来开展了本项研究。一、地膜棉田鲁性杂草种类及发生特点通过广泛调查,覆盖棉田春性杂草主要有马唐(Digitaria adscenden)、牛筋草(Eleusine indica)、马齿苋(Portulaca a oleracea)、苋(Amaranthus sp.)、田旋花(Convolvttlus arvensis)、刺儿菜(Cephalanoplos segcturm)、龙葵(So-lanum njgrum)、藜(Chenopodium sp.)、蒺藜(Tribulus terrestris)等多种
After the cultivation of cotton from open field to cover cultivation, due to the change of ecological conditions, the increase of grass and grass directly affects the benefit of covering yield. Therefore, we conducted this study in recent years. I. The types and occurrence characteristics of Lu weeds in plastic film cotton fields Through extensive investigation, we mainly cover Digitaria adscenden, Eleusine indica, Portulaca oleracea, Amaranthus sp., Convolvtus arvensis, Cephalanoplos segcturm, Solanum njgrum, Chenopodium sp., Tribulus terrestris and the like,