我国棉田有三大难治杂草:打碗花、香附子、芦苇,已严重阻碍棉花安全生产,危及高产丰收。进行安全高效防除已迫在眉睫,笔者仅谈拙见,供应用参考。一、三种杂草的主要危害特点打碗花在整个新疆棉区已严重危害多年,是该棉区第一大草害。 China has three major refractory weeds in cotton fields: potted flowers, Cyperus rotundus, reed, has seriously hindered the safe production of cotton, endangering high yield harvest. For safe and effective control is imminent, I only humble opinion, for reference. First, the three main hazards of weed characteristics Daoxinghua in the entire cotton area in Xinjiang has been a serious harm for many years, is the largest grass in the area of ​​cotton.