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本文对２７份晚熟粳稻品种的１２个与产量有关的性状进行了分析和研究，其结果表明：（１）单苗分蘖数，每穴有效穗数，每穗粒数，饱满千粒重，混合千粒重，植株高度为高产性状，以上性状表现型值高的品种产量亦高。（２）单苗分蘖数，每穴有效穗数多的穗数型品种，遗传相关及遗传贡献大，可以做为晚熟粳稻高产育种的亲本材料，后代材料可以在低世代结合单穴粒重进行选择。（３）分蘖力强，成穗率高，每穗粒数多，千粒重高的晚熟品种，可以做为高产品种在生产上直接利用，本文还报道了高产品种资源的利用情况及高产管理与栽培技术．
The results showed that: (1) The number of tillers per plant, the number of panicles per spike, the number of grains per panicle, the number of full grains per thousand, the weight of mixed thousand kernels, Plant height is high yield traits, the above traits of high phenotypic yield is also high. (2) Spike number per seedling and panicle number per spike had large genetic and genetic contributions, which could be used as parents for high-yielding late-maturing japonica rice. The progeny materials could be combined with single grain weight in the next generation select. (3) Late-maturing varieties with strong tillering ability, high spike rate, more grains per spike, and 1000-grain weight can be used directly in the production of high-yielding varieties. The article also reported the utilization of high-yielding varieties and high-yielding management and cultivation technology.