用回归、相关和变量分析法,估算了水稻主要性状的遗传力,即粒重最高,株高和着粒密度次之。空壳率、实粒数、穗数、单株重等最低,r_2选择几乎无效。二九矮×团粒矮一般遗传相关高于表现型相关,其系数的正负号相同。同一性状的相关系数,因品种不同而异。二九矮×团粒矮的单株重与株高、穗数、粒数和百粒重有高度基因型相关,通过间接选择,可能选到好的个体或系统。 The regression, correlation and variance analysis were used to estimate the heritability of the main characters of rice, ie, the highest grain weight, followed by the plant height and grain density. Shell rate, grain number, spike number, plant weight and other minimum, r_2 almost ineffective choice. Two nine dwarf × aggregate short genetic correlation is higher than phenotype related, the coefficient of the same sign. The correlation coefficient of the same trait varies with the variety. Nine short dwarf × × dwarf plant weight per plant weight, number of spikes, grain number and height of 100 heavy genotypes associated with indirect selection, may choose a good individual or system.