花铃期,是棉花一生中生长发育最旺盛,各种矛盾表现最集中,最激烈,抓“三桃”夺高产的关键时期。这个时期,管理不当,不是长不起“身子”,结不上桃子,就是高、大、空;不是秋穷早衰,就是秋发晚熟,不是烂桃,就是脱落。了解花铃期的生育规律和存在的矛盾,并采取相应的措施,做好矛盾的转化工作,满足生长发育的需要,就能促进“三桃”多结,夺取高产优质。花铃期到底有哪些矛盾左右着棉花生长两个高峰的协调发展呢? 一是生长本身的营养生长与生殖生长的矛盾。它的表现主要有三种:①苗蕾期促过头,特别是初花期氮肥过多,肥水碰头,使碳水化合物大量消耗于蛋白质的合成,促进 Flowering period is the most vigorous growth and development of cotton throughout the life, the most concentrated of all kinds of contradictions, the most intense, grasping the “three peaches” to win a critical period of high yield. This period, improper management, not grow up “body”, can not bear the peach, that is, high, empty; not Qiuqian premature aging, is late autumn hair, not rotten peach, is off. Understand the law of birth and the existing contradictions during the flower-boll period, and take corresponding measures to do contradictory transformation work to meet the needs of growth and development, we can promote the “Three Peach” knots, to seize high yield and quality. What are the contradictions in the flower ring period about the coordinated development of the two peaks of cotton growth? First, the growth of their own vegetative and reproductive growth contradictions. Its performance mainly in three ways: ① seedling stage to promote too much, especially early flowering too much nitrogen fertilizer, fertilizer meet, so that a large number of carbohydrate consumption of protein synthesis, promote