调控膜对土壤水分和温度调控效应的初步研究

调控膜是微孔地膜研究基础上发展起来的，具有透水保水和调温等功能。对调控膜覆盖下的土壤水分、温度与普通地膜覆盖及裸地对比观察结果表明，调控膜覆盖对中等以下强度的降水可使90％以上渗入膜下土中，雨后17d从调控膜中散发出的水分仅占渗入水分的17．6％；温度变化，5~20cm土层中午14：00时调控膜覆盖的比普通膜低0．5~0．6℃,早8：00时和晚20：00时温度差异仅在0．2~0．3℃之间。

A Study on Effects of Regulative Film on Soil Moisture and Temperature

Regulative film which is watr permeable, is a kind of new product of plastic film foragriculture use, A experment was set to determine soil moisture and temperature with regulative filmcovered comparing with that of normal film covered and bare soil. The result shows that 90% of 15mmrainfall penetrated into the soil through the regulative film.The rate is similar to that with the bare soil.Regulative film is good at water conversation. Less 18% of soil water was evaporated through the flim in17 days after the rainfall. Soil temperature raised remarkably under both kinds of films covered.