在北疆大田条件下研究表明 ,棉花根系具有较强的自动调节能力 ,根系开始发生调节的时间早于地上部 ;生育期间干旱胁迫后 ,根量减轻、地上部衰老加快 ,根系生产力下降 ,子棉产量降低 ;覆膜的棉花根系建成提前 ;棉花根量同地上部生物量及子棉产量间存在显著的线性相关关系 The results showed that under the field conditions of northern Xinjiang, the cotton root system had strong autoregulation ability, and the root system began to regulate earlier than the aerial part. After drought stress during the growth period, the root volume was reduced, the aboveground part accelerated, the root productivity decreased, The cotton yield decreased; the root system of cotton covered with cotton was advanced ahead of schedule; there was a significant linear correlation between cotton root biomass and aboveground biomass and cotton yield