| 摘要: |
| 研究了5,10,15,20,25 cm共5种不同长度处理和内壁有孔、内外壁均有孔2种处理由PVC管制成的micro-lysimeters对土壤蒸发的影响。结果表明：降雨后5,10 cm处理的土壤水分蒸发较快，15,20,25 cm处理的变化不明显，可以利用15 cm长的micro-lysimeters测定土壤蒸发；壁上有孔处理的蒸发要高于同样长度的无孔处理。 |
| 关键词: micro-lysimeters 土壤蒸发 测定方法 |
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| 基金项目:国家“863”项目(2001AA241039)；中国科学院知识工程重要方向创新项目(KZCX-SW-317-02);河北省科技攻关项目(01220703D) |
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| Effects of the different length micro-lysimeters on the evaporation |
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| Abstract: |
| In order to find the effects of different length micro-lysimeters on evaporation,we design different length MLS including 5,10,15,20,25 cm and some MLS which have holes on the wall.The result indicates the evaporation of the MLS of 5,10 cm are faster than others at the beginning and the evaporation of MLS of 15,20,25 cm are similar,so we can use micro-lysimeters of 15 cm length to measure the soil evaporation.We also found the evaporation of MLS with the holes are higher than the same depth MLS without holes on the wall. |
| Key words: micro-lysimeters soil evaporation measurement appraaches |
