有旺长、疯长趋势的棉田,或因棉株密度过大、株形分散、植株高大且株行距搭配不合理而有提早封行趋势的棉田,宜喷施缩节胺加以调控。一般根据当地气候条件及棉苗的长势,以盛蕾期至盛花期和打顶前后为重点施药时期。但棉花喷施缩节胺后,田间管理要跟上。棉花喷施缩节胺后,一般3 Long flourishing, long-growing trend of cotton fields, or because of cotton density is too large, plant-shaped scattered, tall plants and spacing with unreasonable line with the trend of premature closure of cotton, should be sprayed with shrink amines to be regulated. Generally based on local climatic conditions and the growth of cotton seedlings to Shenglei flowering period and topping and before and after the key application period. However, after spraying cotton shrink amide, field management to keep up. After spraying cotton shrink amide, the general 3