对10个杂交种及对应的5个自交系的产量及植株形态性状进行了杂种优势的研究。结果表明,单株产量、保绿度、韧皮强度、根系拉力、叶面积系数等性状表现出很强的杂种优势,其中正向部分明显大于负向部分,且杂种优势指数高。叶向值的中亲优势和超亲优势多数属于负向部分。叶夹角的杂种优势较小,杂种优势指数都在100%左右。 Heterosis was studied on the yield and plant morphological traits of 10 hybrids and their corresponding 5 inbred lines. The results showed that the yield per plant, green degree, phloem strength, root tension, leaf area coefficient and other traits showed strong heterosis, of which the positive part was significantly greater than the negative part, and the heterosis index was high. Most of the pro-parents and super-parents in leaf-value are negative. The angle between the leaves of the smaller heterosis, heterosis index at 100%.