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通过对1995～1997 年度江苏省杂交中粳稻区试组合的产量性状分析,结果表明:穗数、每穗总粒数、每穗实粒数、结实率和千粒重间存在较复杂的相关。就产量构成三因素而言,与产量相关程度顺序为千粒重> 穗数> 每穗实粒数,直接通径系数大小顺序为每穗实粒数> 千粒重> 穗数。高产育种应着重于每穗实粒数的提高,即选育穗型较大,结实率较高的组合较易获得高产。
Through the analysis of the yield traits of the hybrid japonica rice trial in Jiangsu Province from 1995 to 1997, the results showed that there were more complicated correlations between the number of panicles per panicle, the number of panicles per panicle, the seed setting rate per panicle and the grain weight per panicle. In terms of the three factors of yield formation, the order of the correlation with the yield is the order of 1000-grain weight> spike number> the number of spikelets per panicle, and the order of the direct path coefficient is the number of spikelets per spike> 1000-grain weight> spike number. High-yielding breeding should focus on increasing the number of grains per panicle, that is, selecting a larger panicle type and higher seed setting rate are more likely to achieve high yield.