彭菊++张上都++伍祥++张大双++周乐良++陈文强++石邦志

摘要 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。

关键词 温度；光照；水稻；叶龄；全生育期

中图分类号 S565.2 文献标识码 A 文章编号 1007-5739（2016）16-0014-02

Abstract 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.

Key words temperature；illumination；rice；leaf age；whole growth period

水稻是仅次于小麦的世界第二大粮食作物，是我国的第一大作物，全国约有2/3的人口以稻米为主食，稳定水稻生产是我国粮食安全的重要保障[1-7]。然而影响水稻群体产量构成因素的因子很多，不同品种、不同群体对产量构成因素的要求不同[2]；除了品种、栽培措施等因素以外，生态因子对水稻产量有十分重要的影响，其中温度与光照是2个最重要的生态因子，适宜的光照与温度有利于水稻的高产与稳产[3-5，8]。本文就2013年贵阳地区温度和光照与不同类型水稻品种的叶龄、全生育期进行调查分析，进而初步探索出不同水稻新品种的温、光特性及规律，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。

1 材料与方法

1.1 试验地概况

试验地位于贵州省水稻研究所内，地处东经106°39′22″，北纬26°30′ 36″，海拔1 139 m。……