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用随机区组法比较试验，对１４个福优组合的遗传参数估算，相关系数和通径分析认为，穗数，穗粒数、千粒重，结实率与单株重关系，遗传参数的估算穗粒数，稳数是决定产量主要因素；其遗传相关系数为穗粒数＞穗数＞千粒重＞结实率；通径系数是穗粒数＞千粒重＞穗数＞结实率。明确了稳粒数是构成这些组合重要因素，判明了福伊Ａ杂种优势在穗粒数的遗传现象，但也不能忽视其它性状的影响，穗数和千粒重在构成这些组合产量上也起较大的作用，认为杂交水稻各个性状优势大小，取决于双亲遗传力的大小，即主要受不育系影响。
The randomized block method was used to compare the genetic parameters of the 14 Fuyou combinations. The correlation coefficient and path analysis showed that the number of spikes, grains per spike, thousand-grain weight, seed setting rate and plant weight, The number of stable and stable yield was the main factor that determined the yield. The genetic correlation coefficients were the number of spikes per spike, the number of spikes per thousand, the rate of grain per thousand, the rate of seed setting, and the coefficient of pathways were the number of grains per spike, the weight per thousand, the number of spike per plant, the seed setting rate. It is clear that the number of stable grains is an important factor in the formation of these combinations, and the genetic phenomenon of the number of spikelets in the Foy A heterosis is identified. However, the effects of other traits can not be neglected. The number of spikes and grain weight also play a significant role in the production of these combinations The role of hybrid rice that the size of each trait, depending on the size of heritability, that is mainly affected by the sterile line.