有机物覆盖地面对土壤物理因素影响的研究（Ⅲ）——有机物覆盖层下土壤温度变化的机制

Soil Cover With Organic Mulch and Its Influences on Soil Physical Parameters (Ⅲ)——Soil Temperature Regime Under Organic Mulch

摘要: 以田间实验为基础，分析了在不同厚度的有机物覆盖层下土壤温度变化的机制并与未覆盖条件下的土壤温度进行了比较。实验结果表明，有机物覆盖使土壤的日最高温度和日平均温度降低，但却使土壤的日最低温度得以提高。

Abstract: Through field experiment the paper analysed the changes of soil temperature under covers with different thickness of organic mulch and the results were compared with control without cover. The experiment results showed that the daily maximum and daily mean value of soil temperature were decreased, the daily minimum of soil temperature was increased in comparison with control.