促进棉花早熟,实现增产增收,是广大棉区干群的迫切愿望。七十年代以来,北京农业大学和上海植物生理所等单位,针对南北棉区每年都有不少秋桃累累的高产迟熟棉田,因霜冻来临,不能正常成熟吐絮,遭受程度不同的减产降质损失的问题,研究利用人工合成的植物生长激素乙烯利(2—氯乙基磷酸)进行化学催熟,取得了促熟,增产和改善品质的良好效果,为解决棉花贪青晚熟问题,提供了一项新的有效措施。我省地处长江中游,气候温暖,无霜期长,一般年景,大部分秋桃都可在十月底或“立冬”前正常成熟吐絮,赶上适时冬种, Promote cotton precocity, to increase production and income, is the urgent desire of the majority of cotton dry groups. Since the seventies, Beijing Agricultural University and Shanghai Plant Physiology and other units, for the cotton fields in the north and south every year a lot of autumn and winter high yield and mature cotton fields, due to the advent of frost, can not be a normal mature boll, suffered a different degree of yield reduction Loss of the problem, the study of the use of synthetic plant growth hormone ethephon (2-chloroethyl phosphate) for chemical ripening, and achieved maturing, yield and improve the quality of the good results, to solve the problem of over-ripening cotton late, provided A new effective measure. The province is located in the middle reaches of the Yangtze River, the climate is warm, frost-free period is long, the general years, most of the autumn peach can be in the end of October or “winter” before the normal mature boll, catch timely winter species,