摘要： 通过不同年份生育期有效积温和日照对杂交粳稻农艺性状的影响分析得知，有效积温与各农艺性状的相关性大小依次为：空秕率（-0.6984）>产量（0.6132）>千粒重（-0.3065）>有效穗数（0.1981）>株高（0.1872）>穗粒数（-0.1192）;日照对各性状相关性为千粒重（-0.5149）>穗粒数（0.5107）>株高（-0.3111）>有效穗数（0.2747）>空秕率（-0.0651）>产量（0.0056）;温光对产量的回归方程为Y=-1129.50+0.4498X1+0.0121X2。

关键词: 有效积温, 日照, 杂交粳稻, 农艺性状

Abstract: Through analysing the effect of accumulated temperature and light during the growing period on hybrid rice agronomic characteristics,it is learned that the magnitude of the effect of accumula ted temperature on each agronomic characteristic was in such anorder as empty seed percent>yield>1000-grain weight>effective ears>plant height>seeds of perear,them agnitude of the effect of light on each character isticw as in the order of 1000-grain weight>seeds of perear >plant height >effective ears>empty seed percent>yield . The regression equation of temperature and light to yield isY-=-112.950+0.4498X1+0.0121X2.

Key words: Hybrid Rice, Effective accumulated temperature, Light, Agronomic characteristics

中图分类号: 

• S511