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