在我国的大部分棉区,当枯霜到来时,总有不少棉铃来不及吐絮,共中的一部分晚秋桃根本不能成熟,另一些能够勉强成熟的棉铃,也成为霜后花。霜后花和剥桃花品质很差,使用价值很低。在许多地区,棉花的晚收又直接影响后茬小麦的播种、苗期生长和产量。因此,促使棉花早熟,对棉花优质、 In most cotton areas of our country, when the dry frost comes, there are always a few bolls that are too late for a boll. Part of the late autumn peaches can not mature at all, while others that barely mature can also become frosted flowers. After the cream and peach stripping poor quality, low value. In many areas, the late harvest of cotton directly affects the sowing, seedling growth and yield of subsequent cropping. Therefore, to promote cotton precocity, high-quality cotton,