棉花的蕾铃脱落是对不良环境条件的一种自动生理调节过程，完全避免是不可能的，但加强棉花中后期管理，肥、水、化控协调配合，在苗期早发稳长的基础上，严控蕾期旺长，适时打顶、整枝和剪除无效花蕾及空枝，以塑造理想的高产株型和合理的群体作结构，防止后期早衰，则可有效地减少蕾铃脱落，提高成铃率。 Cotton boll shedding is an automatic physiological regulation of adverse environmental conditions, completely avoid is impossible, but to strengthen the cotton in the late management, fertilizer, water, chemical control and coordination, early onset of seedling stable foundation On the strict control of budding Wang Chang, timely top topping, pruning and cutting off ineffective buds and empty branches, in order to create the ideal high-yielding plant type and reasonable for the community structure, to prevent premature aging, you can effectively reduce the buds off, improve Into the bell rate.