Abstract: [Objective and Method]Chemical treatment of slow-release mepiquat chloride from cotton coating seed, which has practical significance in saving cost and increasing benefit, is one way of simplified cultivation of cotton. This paper analyzed the effect of slow-release mepiquat chloride by using different doses of mepiquat chloride in coating seed. It involved in the influence of slow-release mepiquat chloride on cotton growth, agronomic and economic characters, and so on. [Mesult]The results showed that slow-release mepiquat chloride of middle and high dose had good effects on avoiding spindling of cotton before topping, and its function was similar to foliar application of mepiquat chloride in regulating the growth and agronomic characters of cotton.Slow-release mepiquat chloride has little effect on yield. [Conclusion]Chemical manipulation of slow-release mepiquat chloride can replace the foliar application of mepiquat chloride before topping.

摘要： [目的]应用种子包衣缓释缩节胺化控技术,简化棉花栽培管理措施和节本增效.[方法]采用高、中、低三个剂量的缓释缩节胺包衣,研究其对棉花生长发育、农艺及经济性状等的影响.[结果]缓释缩节胺包衣对棉花生长发育、农艺性状的影响与常规喷施相似,中、高剂量处理均能够有效防止棉花打顶前的徒长,各剂量对产量无显著影响,合适的剂量还具有增产趋势.[结论]棉花打顶前,缩节胺的持续释放能够代替常规喷施调控棉花生长.