The results show that the diurnal variation of leaf-air temperature difference varies under different soil moisture conditions, the low soil moisture results in large leaf-air temperature difference.
结果表明：水稻叶气温差在不同的土壤水分条件下表现出不同的日变化规律，较低的土壤水分导致了较高的叶气温差；
In the soil with insufficient moisture, transpiration rate decreases, leaf temperature increases and the difference between leaf temperature and air temperature becomes greater.
土壤水分不足，蒸腾速率减小，叶温升高，叶温与气温差增大。
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