为了研究光、热、气、水对牧草生长发育的影响,探讨牧草生育对外界环境条件的适应性和统一性,本文以红豆草的草田小气候观测资料为依据,分析了太阳辐射在草田中随植株高度而变化的分布规律;研究了草田温度在不同时段呈“受热型”和“放热型”等的独特变化特征和草田空气温度比祼地高、变化差异小等特殊小气候。 In order to study the effects of light, heat, gas and water on the growth and development of forage grass, and to explore the adaptability and unity of forage growth to external environmental conditions, this paper analyzed the effects of solar radiation on grassland Plant height and the distribution of changes in the lawn temperature was studied in different periods was “heated” and “exothermic” and other unique characteristics of the change and grassland air temperature than the high, the difference is small and other special microclimate.