用氰氨化钙作脱叶剂,25年前便在世界上棉花生产实践中利用。但是,在空气相对湿度低和露水少的情况下(例如在塔什干)用氯酸镁更为有效。这个药剂不是立即使叶片干枯而是促使叶柄基部形成离层,以造成如下水分状况。在喷了药剂的头一时期,叶片的蒸腾作用大大地强烈上升。我们的试验采用棉花品种108φ,喷洒1%氯酸镁溶液经 Cyanamide, a deflocculant, was used 25 years ago in cotton production in the world. However, it is more effective to use magnesium chlorate in the case of low air relative humidity and less dew (eg in Tashkent). This agent does not immediately dry the leaf but forces the base of the petiole to separate to create the following moisture conditions. In the first spray of the agent, the transpiration of the leaves rose strongly strongly. Our test uses cotton variety 108φ sprayed with 1% magnesium chlorate solution