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目前杂交棉制种多以人工去雄授粉,花费工时多、种子成本高。我县棉花栽培上以露地直播为主,用种量大,若以现有栽培方法推广应用杂交棉F_1代,推广速度、应用范围必将受到种子成本高的制约。生产上是否可以利用杂交棉F_2代,提高杂交棉种子的利用率,降低生产成本,这也是我们研究的课题之一。
At present, cotton hybrids are mostly hand-pollinated by pollination, which takes many man-hours and high cost of seeds. Cotton cultivation in our county to opencast live mainly with large seeds, if the existing cultivation methods to promote the use of hybrid cotton F1 generation, the promotion of speed, the scope of application will be subject to the high cost of seeds. It is also one of our research topics whether the production of F_2 generation of hybrid cotton can be used to improve the utilization rate of hybrid cotton seeds and reduce the production cost.