优良的棉籽品质是提高棉花产量、改进纖維品质的重要物质基础。由于棉花为常异花授粉作物,且开花结铃时期较长,病虫侵害亦多,收获时既需多次采摘,收获后又需轧花处理,因而十分容易引起棉籽生物学混杂和机械混杂,致使棉种纯度和有关播种品质的净度、籽指及发芽率等指标显著降低。近年来全国棉区种植良种岱字棉15号的面积日益扩大,在生产上 Excellent cottonseed quality is an important material basis for improving cotton yield and improving fiber quality. Because cotton is the evergreen pollination crop, and the period of flowering and boll is longer, pest and insect infestation are also many, which need to be harvested several times, after harvesting need ginning treatment, which is very easy to cause cottonseed biology and mechanical hybrid miscellaneous , Resulting in cotton purity and sowing quality of clarity, seed index and germination rate and other indicators significantly reduced. In recent years, the planting area of ​​the national cotton area Dai Zi No. 15 has been expanding in production