| 不同湿度条件下土壤水分的蒸发性能和移动规律 |
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| 引用本文： | 杨文治,赵沛伦,张启元.不同湿度条件下土壤水分的蒸发性能和移动规律[J].土壤学报,1981,18(1):24-37. |
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| 作者姓名： | 杨文治 赵沛伦 张启元 |
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| 作者单位： | 中国科学院西北水土保持研究所;中国科学院西北水土保持研究所;中国科学院西北水土保持研究所 |
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| 摘 要： | 水分蒸发过程是土壤水文状况的重要因子之一.土壤水分的蒸发过程、强度及其影响深度,除与气候条件有关外,它与土壤性质,尤其是土壤的湿润程度有极为密切的关系.因此,研究不同湿度条件下,土壤水分的蒸发性能及其移动规律,对因时制宜地采取有效的保墒措施,是很重要的.
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EVAPORATION AND MOVEMENT OF SOIL WATER UNDER DIFFERENT SOIL MOISTURE CONDITION |
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| Yang Wen-zhi,Zhao Pei-lun and Zhang Qi-yuan.EVAPORATION AND MOVEMENT OF SOIL WATER UNDER DIFFERENT SOIL MOISTURE CONDITION[J].Acta Pedologica Sinica,1981,18(1):24-37. |
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| Authors: | Yang Wen-zhi Zhao Pei-lun and Zhang Qi-yuan |
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| Institution: | Northwestern Institute of Soil and Water Conservation, Academia Sinica;Northwestern Institute of Soil and Water Conservation, Academia Sinica;Northwestern Institute of Soil and Water Conservation, Academia Sinica |
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| Abstract: | The experiment of evaporation and movement of soil water were carried out in the tpolyniethylmethacrylate cylinders of 5 em in diameter and 120 cm high.The soil used in the experiment was a heavy loam;and CaCl3,was used as the tracer.Four treatments were laid out on the basis different soil moisture contents,they were (a) the maximum hygroscopicity,(b) wilting percentage,(c) the moisture content of the capillary bond disruption,and (d) the minimum water-holding capacity.The experimental data showed that,under evaporation condition,the lower limit of water in the liquid form in soil is near the wilting percentage.When soil moisture content is lower than the wilting percentage,the movement of the soil water in liquid form is usually extremely weak. |
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