江苏省是我国重点产棉省,也是优质商品棉重要基地之一。自五十年代以来,由于重视棉花良种的提纯复壮工作,对提高棉花产量,保持良种种性,起了积极作用。据1968～1980年棉纤维品质统计资料:一级棉强力,13年中有12年为4～4.48克,成熟系数1.6～1.95,纤维细度5207～6025米/克; Jiangsu Province is a key cotton-producing province in China and one of the important bases for high-quality commodity cotton. Since the 1950s, due to the emphasis on the purification and rejuvenation of the improved varieties of cotton, cotton production has played an active role in improving the yield of cotton and maintaining good varieties. According to the statistical data of cotton fiber quality from 1968 to 1980: the first grade cotton is strong, with 12.4 years of 4 ~ 4.48 grams, the mature coefficient of 1.6 ~ 1.95 and the fineness of 5207-6025 m / g in 13 years;