温光条件对不同类型水稻品种叶龄和生育期的影响

Effect of Temperature and Light Conditions on Leaf Age and Growth Period of Different Rice Varieties

对贵阳地区温光条件对早、中、晚熟水稻品种的叶龄和生育期的影响进行调查分析,结果表明:感温性以晚稻为最强,早稻次之,中稻较弱。感光性以晚稻最强,对中稻和早稻的影响不大。初步了解了贵阳地区温度和光照与叶龄、生育期之间的关系。可以较为准确地确定不同类型水稻生长发育的各个时期所需要的有效积温及日照时数,为贵阳不同生态稻作区水稻品种布局和叶龄指数高产栽培模式提供科学依据。

The effect of temperature and light conditions in Guiyang area on leaf age and growth period of the early, middle and late maturing rice varieties was investigated.The results showed that the temperature sensitivity of the late maturing rice varieties was the strongest ,that of early maturing rice varieties was the second ,that of middle-season rice varieties was weak.Photosensitive in late maturing rice varieties was the strongest ,but impact on middle maturing rice varieties and early rice varieties were not large.The relationship between temperature and light in Guiyang area and leaf age, maturing the growth period was preliminarily understood.To determine accurately the effective temperature and sunshine hours required in various periods of different types of rice growth ,to provide a scientific basis for rice varieties and leaf index area layout of Guiyang ecological rice cultivation patterns.