温光变异对水稻农艺性状的影响

The Effect of Variation of Temperature and Daylight to Rice Agronomic Characteristics

通过不同年份生育期间有效积温和日照对水稻品种农艺性状关系的分析得知，有效积温对各农艺性状的相关表现为空秕率（0．4696**）＞穗粒数（-0．4063*）＞千粒重（-0．4014*）＞有效穗数（0．2511）＞株高（-0．0843）＞产量（0．0598）；日照对各性状相关性为穗粒数（0．5889**）＞空秕率（0．3843）＞千粒重（-0．2047）＞株高（0．0700）＞有效穗数（0．0155）＞产量（-0．O123）；温光对产量的回归方程为Y=367．74＋0．0468X1—0.0166X2。

Through analysing the effect of accumulated temperature and daylight during the growing pened to rice agronomic characteristics, it is known that the effect of accumulated temperature on agronomic characteristics was empty seed percent＞seeds of per ear＞1 000 grain weight＞effective ears＞plant height>yield, the effect of daylight characteristics was seeds of per ear＞empty seed percent＞1 000 grain weight＞plant height＞effective ears＞yield. The regregression equation of temperature and daylight to yield is Y=367.64+0.0468X1-0.0166X2.