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对2007年黑龙江省三大积温带水稻产量构成因素和产量进行相关分析。结果表明,在第一、二积温带单位面积穗数、每穗粒数与产量相关性表现为极显著正相关,第一积温带千粒重与产量表现显著正相关、空秕率与产量表现显著负相关,第二集温带千粒重与产量表现正相关、空秕率与产量表现负相关;第三积温带单位面积穗数、每穗粒数、千粒重与产量表现正相关,空秕率与产量表现负相关,但相关性未达显著水平。主成分分析表明,水稻产量构成因素对产量的影响表现为:第一积温带产量构成因素对产量的影响表现为每穗粒数>空秕率>单位面积穗数>千粒重;第二积温带表现为每穗粒数>空秕率>千粒重>单位面积穗数;第三积温带表现为单位面积穗数>空秕率>每穗粒数>千粒重。
The correlation analysis was made between the yield components and yield components of three major temperate rice in Heilongjiang Province in 2007. The results showed that there was a significant positive correlation between the spikes per panicle and the grain yield per panicle in the first and second accumulated temperate zones. The grain weight per panicle in the first accumulated temperate zone was significantly and positively correlated with the yield, and the empty rate and yield were significantly negative The second part of the temperate 1000-grain weight and yield performance is positively correlated, empty rate and yield performance negative correlation; the third accumulated temperate zone per panicle area, grain number per spike, grain weight and yield performance is positively correlated, empty rate and yield performance negative Related, but the correlation did not reach significant level. Principal component analysis showed that the impact of rice yield components on yield was as follows: The effect of yield components of the first accumulated temperate zone on grain yield per spike was as follows: grains per spike> percentage of emptying> spike per unit area> 1000-grain weight; The number of spikelets per spike> empty-spike rate> 1000-grain weight> spike per unit area; the third plot of temperate zone was spikelets per unit area> empty-spike rate> grains per spike> 1000-grain weight.