作物的叶面温度既反映作物内部的热传导过程,又反映作物与外界环境的能量交换过程。它与百叶箱中的气温有着明显差异,而且这种差异是非线性的。因此,要正确分析不同地区热量资源的差异,和研究不同小气候条件下热状况的变化,以及不同作物所处的生态气候条件,使用叶温资料将更符合实际。在实际工作中为了获得某种作物的叶温,尽管用热电偶或红外辐射测温仪可直接读取, The foliar temperature of the crop reflects both the heat transfer process inside the crop and the energy exchange process between the crop and the external environment. It has a clear difference from the temperature in the veranda, and the difference is non-linear. Therefore, to correctly analyze the difference of heat resources in different regions and to study the change of thermal status under different microclimate conditions and the ecological climatic conditions of different crops, the use of leaf temperature data will be more realistic. In practical work in order to obtain the leaf temperature of a certain crop, though thermocouple or infrared radiation thermometer can be directly read,