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当前位置: 首页 > 文章 > 设施栽培下原状土与扰动土水分特性的试验研究 水土保持通报 2013,33 (6) 99-102
Position: Home > Articles > Soil Water Characteristics Between Undisturbed and Disturbed Soils in Greenhouse Soil Bulletin of Soil and Water Conservation 2013,33 (6) 99-102

设施栽培下原状土与扰动土水分特性的试验研究

作  者：
吴漩;郑子成;李廷轩;张锡洲;王永东
单  位：
四川农业大学资源环境学院
关键词：
设施土壤;原状土;扰动土;水分特性
摘  要：
以四川省双流县设施栽培土壤为研究对象,对其原状土与扰动土的土壤水分特征曲线、水分物理性质和比水容量等项目进行了研究。结果表明,扰动土水分特征曲线总体变化趋势与原状土较为一致。在低吸力阶段,相同吸力条件下扰动土含水量高于原状土,在高吸力阶段两者差异较小。扰动土毛管孔隙度、总孔度和凋萎含水量在剖面上的总体变化趋势与原状土较为一致。扰动土不同土层田间持水量和有效水含量差异较小,原状土的田间持水量和有效水含量均随土层加深而减少。在低吸力阶段,相同吸力条件下扰动土比水容量远高于原状土,但随土壤水吸力增加,扰动土比水容量变化趋势逐渐与原状土一致。
译  名：
Soil Water Characteristics Between Undisturbed and Disturbed Soils in Greenhouse Soil
作  者：
WU Xuan;ZHENG Zi-cheng;LI Ting-xuan;ZHANG Xi-zhou;WANG Yong-dong;College of Resources and Environment Science,Sichuan Agricultural University;
关键词：
greenhouse soil;;undisturbed soil;;disturbed soil;;soil water characteristics
摘  要：
In order to study soil water characteristics in greenhouse soil,the soil water retention curve,hydrophysical property and specific water capacity were analyzed and water characteristics for both undisturbed and disturbed soils were compared in greenhouse in Shuangliu County of Sichuan Province.Results showed that the change of soil water retention curve in disturbed soil was the same as that of undisturbed soil generally.On the condition of the same soil water suction,soil water content of disturbed soil was higher than that of undisturbed soil in low suction stage,while the difference of soil water content was not significant between disturbed and undisturbed soils in high suction stage.There was the same tendency in profile change of capillary porosity,total porosity and wilting coefficient in both disturbed and undisturbed soils.The difference was not significant between field capacity and available water content for disturbed soil,while field capacity and available water content showed the decreasing tendency along with increasing soil layer for undisturbed soil. On the condition of the same soil water suction,the specific water capacity of disturbed soil was far above that of undisturbed soil in low suction stage,while the change of specific water capacity showed the same tendency between disturbed soil and undisturbed soil along with increasing soil water suction.

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