调控膜对土壤水分和温度调控效应的初步研究  

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

作　　者：郝学金[1] 黄学芳[1] 牛继兰[2] 

机构地区：[1]山西省农业科学院旱农中心,太原030031 [2]方山县农业技术推广中心

出　　处：《山西农业科学》1998年第3期59-61,共3页Journal of Shanxi Agricultural Sciences

摘　　要：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。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.

关 键 词：调控地膜 土壤水分 土壤温度 影响 

分 类 号：S316[农业科学—作物栽培与耕作技术] S152.7[农业科学—农艺学]