我省棉花蕾期一般在雨季,生长较稳。始花后进入旱季,温度升高,生长迅速,容易发生徒长;造成棉株“高、大、空”;影响棉花产量。为使棉花营养生长与生殖生长比例协调,我站1987年在棉花始花期进行了喷施激素——棉壮素,获碍良好效果。“棉壮素”为白色结晶体,江苏激素研究所生产。试验地设在东方红乡聂圩村历年高产,早发棉地内,设二个处理,三次重复,一个对照共七个小区,每小区面积为0.12亩,棉种品种为78—7。两处理系亩用 Cotton buds in our province generally in the rainy season, the growth of more stable. After the first flowering into the dry season, temperature, rapid growth, prone to leggy; resulting in cotton plant “high, large and empty”; affecting cotton production. In order to coordinate the proportion of vegetative and reproductive growth of cotton, I sprayed the hormone hormone-cotton-cortexin in the first flowering stage of cotton in 1987, which hindered the good effect. “Cotton Cellulose” is a white crystal, Jiangsu Institute of hormone production. Experimental site is located in Dongfanghong Nie Weicun calendar years of high yield, early cotton, with two treatments, three replicates, a control a total of seven small plots, each plot area of ​​0.12 acres, cotton varieties of 78-7. Two treatment system mu