陆地棉品种间杂种一般比常规品种能增产10～23%或更高,而且在抗病和品质等方面也有优势。从产量结构上分析,杂种棉产量的高低取决于单株产量以及单位面积上的株数,取决于这两个因素的矛盾统一体——群体生产力。在一定的种植密度下,产量就 Gossypium hirsutum hybrids generally yield 10-23% or more than conventional varieties, but also have advantages in disease resistance and quality. From the perspective of yield structure, the yield of hybrid cotton depends on the yield per plant and the number of trees per unit area, depending on the contradictory unity of these two factors - group productivity. In a certain planting density, yield on it