棉花整枝作业在无霜期较短的辽宁棉区,是减少蕾铃脱落、促进早熟、增加霜前花,提高产量的重要技术措施。但过去在生产上,整枝偏晚,为的是使植株上部多结铃,而忽视了植株下部铃的脱落。其次棉田密度有大幅度增 Cotton pruning operations in the area of ​​Liaoning cotton with a short frost-free period are important technical measures to reduce the shedding of the buds, promote the precociousness, increase the frost before flowering and increase the yield. However, in the past, pruning was late in production in order to make the upper part of the plant more bell-ring while ignoring the shedding of the lower part of the plant bell. Second, cotton density has increased significantly