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当前位置: 首页 > 文章 > 冻融期不同地表覆盖模式对土壤水分的影响 节水灌溉 2018 (10) 24-26+32
Position: Home > Articles > Effects of Different Soil Surface Mulching Method during Freezing-thawing Period on Soil Water Water Saving Irrigation 2018 (10) 24-26+32

冻融期不同地表覆盖模式对土壤水分的影响

关键词：
冻融期;土壤水分;地膜覆盖;秸秆覆盖
摘  要：
为了探究不同地表覆盖模式下对冻融期土壤水分的影响,分别设置裸地、地膜覆盖和秸秆覆盖3种地表处理,对比分析3种地表处理下土壤水分动态变化特征。结果表明:随冻融期进程土壤水分呈现先减小后增加的趋势,浅层土壤水分受外界环境影响变化幅度高于深层。地表覆盖改变土壤外部环境,阻碍土壤水分与外界大气环境的能量交换,三个处理含水率变幅表现为裸地>秸秆覆盖>地膜覆盖。同时土壤水分变异系数浅层高于深层,浅层含水率变异性呈中等变异性,深层土壤含水率变异性呈中等变异性或弱变异性。
译  名：
Effects of Different Soil Surface Mulching Method during Freezing-thawing Period on Soil Water
作  者：
LI Hui;JIN Zhi-feng;YUE Sheng-ru;College of Water Conservancy and Architecture Engineering,Tarim University;YILI Vocational and Technical college;
单  位：
LI Hui%JIN Zhi-feng%YUE Sheng-ru%College of Water Conservancy and Architecture Engineering,Tarim University%YILI Vocational and Technical college
关键词：
freezing and thawing period;;soils moisture;;plastic film mulching;;straw mulching
摘  要：
In order to reveal the effects of different soil surface mulching methods on soil water during freeze-thaw period,in this paper,three treatments of soil surface,including the bare land,plastic film mulching and straw mulching,are set up to analyze the dynamic changes of soil water in three treatments.The results show that during freezing-thawing period,the soil water presents a tendency of decreasing first and then increasing; the soil moisture content variation ranges affected by the external environment of shallow layer is higher than that of deep layer; soil surface mulching changes the soil external environment and blocks the energy exchange between soil water and external environment; the moisture content variation range of the three treatments can be ranked from large to small as bare land,straw mulching and plastic film mulching; the soil moisture content variation coefficient of the shallow layer is higher than that of deep layer; the soil moisture variability of shallow layer is moderate,while that of deep layer is moderate or weak.

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