稻米品质温光潜势的估算及其在我国的地域分布

通过研究水稻灌浆结实期间温度、辐射和米质之间的关系,首先建立了米质温度函数。然后通过估算不同温度下由辐射引起的米质降解率,建立了米质辐射订正函数。将上述两函数结合,则可得估算一地米质气候资源潜力的米质温光潜势计算公式。利用该公式,估算了我国各稻区的米质温光潜势值。从潜势在全国的分布可以看出：我国米质气候资源对于米质优化具有普适性质；潜势因地域而异,具有空间分布上的不均衡性；潜势随季节有别,具有时间分布上的不均衡性；在地形复杂地区,潜势还呈现出多层次的垂直地带性结构特征。

THE ESTIMATION OF TEMPERATURE SUNLIGHT POTENTIALIN RELATION TO THE RICE QUALITY AND ITS REGIONAL DISTRIBUTION IN CHINA

n the basis of the research of the relationship between temperature solar radiation and rice quality in the paste filling stage,the temperature function in relation to the rice quality is established first.Then through calculating the rice quality's descending rate caused by solar radiation change under different temperature conditions, the solar radiation revisionary function in relation to the rice quality is set up. The temperature sunlight potential calculation formula which is used to estimate the climatic resource latent force in relation to the rice quality of a certain place is obtained by combining the 2 functions mentioned above. According to this formula,the temperature sunlight potential values in relation to the rice quality are estimated in all chinese rice regions.The regional distribution of the potential reveals the following :the climate resource in relation to the rice quality has universal adaptability to the production of good quality rice;the potential varies with the space and the time, so in different regions and seasons it is different;the potential also has vertical zonality structure in the regions with complex terrain.