近年来,大面积棉田由于连年单一使用氟乐灵,使棉田杂草群落起了变化,阔叶杂草的比例逐年上升。5月份以后高温高湿,杂草出土高峰又将出现,尤其是棉花生长中后期迟出土的鳢肠、苦荬菜、藜等对棉花生长危害较大。为此我们今年进行了伏草隆二次化除试验。 In recent years, a large area of ​​cotton fields as a single year of trifluralin, cotton weed community has changed, the proportion of broad-leaved weeds year by year. May after high temperature and humidity, weeds unearthed the peak again, especially in late cotton growth in the late Chu, intestinal, bitter weeds, quinoa and other more harmful to the growth of cotton. For this reason, we carried out this year Fufang Long secondary test.