棉花花铃期是棉花一生中干物质积累最多、生长最快的时期 ,也是营养生长与生殖生长矛盾突出、需肥水最多的时期。此期管理不当易出现蕾、铃脱落 ,烂铃、早衰等问题。因此 ,加强花铃期棉田管理是夺取棉花丰收的重要环节。1重施花铃肥针对抗虫棉结铃早、结铃性强而集中 ,对钾敏感 Cotton flower boll period is the dry matter accumulation of cotton in the life of the most, the fastest growing period, but also the contradiction between vegetative and reproductive growth prominent need to fertilizer the most time. Improper management in this period prone to buds, bell off, bad bell, premature aging and other issues. Therefore, to strengthen cotton boll management is an important link to seize cotton harvest. A heavy application of bollworms against insect-resistant boll boll early, boll and strong concentration, sensitive to potassium