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一、PD系统品种(系)的利用 1983年从中国农科院品种资源所引进一批美国PD系统品种和种质系,通过1983及1984年在南京及大丰种植观察和比较试验,表现纤维品质较为突出,主要是纤维强度高,单纤维强力达4.16～5.45克,並具有一定的产量水平和增产潜力。1985～1987年选取其中SC-1、PD9223、PD9232及PD4381四个品种(系)在我省淮北地区东辛农场、沿淮及淮南地区滨淮、淮海、白马湖及三河农场进行试种与繁殖,测定在不同地区大面积生产条件下的适应性和生产力,並与无锡国棉二厂协作进行单唛试纺。试种与试纺结果如下:
First, the use of PD system varieties (lines) 1983 from the Chinese Academy of Agricultural Sciences introduced a number of varieties of plant resources and the United States PD system germplasm lines in 1983 and 1984 in Nanjing and Dafeng planting observation and comparative tests, the performance of fiber Quality is more prominent, mainly high fiber strength, single fiber strength up to 4.16 ~ 5.45 grams, and has a certain level of yield and yield potential. From 1985 to 1987, four varieties (SC-1, PD9223, PD9232 and PD4381) were selected for breeding and breeding in Dongxin Farm, Huaibei and Huainan areas of Huai-hai, Huaihai, Huaihai, , Measured in different regions under the conditions of large-scale production adaptability and productivity, and with the cooperation of Wuxi State Cotton Plant single-Mark test spinning. Test and test spinning results are as follows: