With two high-yielding hybrid rice combinations Shanyou 63 and Liangyoupeijiu as cheek, 18 combinations with big panicle are chosen to study the relationships between yield components and yield.

• 摘要以汕优63和两优培九作对照，18个株叶形态较好的大穗型两系杂交稻组合作为试验材料，研究分析了产量构成因素与产量的关系。