通过喷施4种不同种类脱叶剂和清水对照,研究其在长绒棉上的应用效果。结果表明,喷施4种不同脱叶剂后脱叶率和吐絮率均高于对照,其中喷施噻苯隆+乙烯利混合液的脱叶率和吐絮率分别达到100%和88.76%,效果最好;喷施脱叶剂后长绒棉的产量性状、纤维品质与对照无显著差异。 Four different kinds of defoliants and water control were sprayed to study the application effect on the long-staple cotton. The results showed that after the application of four different defoliants, the rate of defoliating and the rate of opening to the mouth were both higher than that of the control. The rate of removing and filling of the mixture of thidiazuron and ethephon was 100% and 88.76%, respectively The best; After spraying leaf decollete long-staple cotton yield traits, fiber quality and no significant difference between the control.