棉花在生长发育过程中,由于气候、土质、管理方法和施肥水平的影响,使它在某个阶段的内源激素控制其生长发育。为了打破这种僵局,促使棉花停止或加速生长,必须人为地加以化学调控,即从外部施加人工合成的植物生长调节剂来影响棉花体内的激素系统,使之达到平衡。在生产实践中合理使用植物生长调节剂——缩节安,是实现棉花优化栽培的重要配套措施之一。我县从1982年开始试验、示范, Cotton in the process of growth and development, due to climate, soil, management practices and fertilization levels, so that it is at a certain stage of endogenous hormones to control its growth and development. In order to break this stalemate and to stop cotton or accelerate its growth, chemical control must be artificially artificially applied, that is, the application of synthetic plant growth regulators from outside to affect the hormone system in cotton to balance it. Reasonable use of plant growth regulators in production practice - Shuan’an, is one of the important measures to achieve optimal cotton cultivation. My county from 1982 experiments, demonstrations,