膜下滴灌棉花在施肥和灌水上发生了一系列的变化。本文作者通过滴灌棉花根系的分布特点 ,测定了湿润峰在 3种质地中的变化规律 ,滴灌施肥后氮磷养分在土壤中的分布特点 ,提出膜下滴灌棉花采用液体滴灌专用肥 ,实行全生育期通过管道直接施入棉花根部 ,可以提高肥料的利用率 ,减少施肥成本 ,从而提高棉花产量 Under film drip irrigation, a series of changes took place on fertilization and irrigation. Through the distribution characteristics of cotton root system, the author determined the changing rule of wetting peak in three kinds of texture, the distribution characteristics of nitrogen and phosphorus in soil after drip irrigation and fertilization, and proposed that drip irrigation with cotton drip irrigation liquid fertilizer Period through the pipe directly into the cotton roots, can improve fertilizer utilization, reduce fertilizer costs, thereby increasing cotton production