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我省棉花良种岱字棉15号已经普及,这对增加单位面积产量,改进纤维品质起了很大的作用。但因过去缺乏完善的良种繁育制度,栽培管理不善,因而良种的优良性状逐渐减退,从而降低了良种在生产上的作用。例如,岱字棉15号良种,我省引种初期衣分为38—41%,目前在不少地区已下降到36—37%。为稳定和提高良种在生产上的作用,根据苏联和国内一些研究单位的经验,必须进行定期的
Cotton varieties in our province Dai Dai cotton on the 15th has been popular, which increase the yield per unit area, improve fiber quality played a significant role. However, due to the lack of a well-developed thoroughbred breeding system in the past and poor cultivation and management, the fine traits of improved varieties have gradually diminished, thus reducing the role of improved varieties in their production. For example, Dai Zi 15 cotton varieties, the province introduced the initial clothing 38-41%, now in many areas has dropped to 36-37%. In order to stabilize and improve the production of improved varieties, according to the experience of the Soviet Union and some domestic research institutes, it is necessary to carry out regular