哲里木盟4种主要农作物气候生产潜力变化及对比分析

分析了哲里木盟玉米、水稻、高梁、大豆４ 种主要作物近４５ 年光能、光温、气候生产潜力的变化，结果表明：生长季内（５ ～９ 月） 光能生产潜力在波动中有减小的趋势；温度升高，对４ 种作物光温生产潜力有不同程度的提高，其中对玉米、水稻、高粱的影响明显大于对大豆的影响；降水变化对生产潜力的影响远大于温度变化的影响，其中降水对玉米气候生产潜力的影响高于对高粱、大豆的影响。从生产潜力的大小及其变化来看，玉米和水稻是适应当地气候变化的优势作物，降水量不足是影响生产潜力发挥的主要限制因子

A Comparative Analysis on the Potential Productivities of the Main Crops in Zhelimu League Impacted by Climatic Variation

In this paper ,the variations of the light energy photoynthesis and temperature and climatic potential productivity of the main crops-maize,rice,sorghum and soybeany-in Zhelimu league in recent forty-five years were analysed. The results show that:the light energy potential prodectivity is reducing with fluctuation during growing seasons (May to September),The influencd of temperature on the photosynthesis and temperature potential productitviy of maize rice and sorghum is more obvious than it does on that of soybean The influence of precipition on the climatic potential producitivity of maize is more obvious than it does on that of soybean and sorghtum. And the influence of pecipition variation on potential productivity is more obvious than that of temperature varition on it.