| PAA对不同土壤保水和蒸发性能的影响 |
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| 引用本文： | 杨永辉,赵世伟,吴普特,武继承,冯浩,黄占斌,史婉丽.PAA对不同土壤保水和蒸发性能的影响[J].灌溉排水学报,2009(5). |
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| 作者姓名： | 杨永辉 赵世伟 吴普特 武继承 冯浩 黄占斌 史婉丽 |
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| 作者单位： | 西北农林科技大学;中国科学院水利部水土保持研究所;国家节水灌溉杨凌工程技术研究中心;河南省农业科学院植物营养与资源环境研究所;中国矿业大学(北京校区)化学与环境工程学院;中国水利水电科学研究院水环境所; |
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| 基金项目： | “十一五”国家科技支撑计划课题(2006BAD09B08); 国家863计划课题(2006AA100219); 国家863节水农业项目(2006AA100215); 河南省重点科技攻关资助项目(0623012600) |
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| 摘 要： | 采用土柱法研究了不同PAA施入量对3种黄土高原主要土壤类型(黄绵土、黑垆土和塿土)的持水性能、土壤饱和导水率和土壤蒸发量的影响,以进一步阐明PAA的保水和蒸发作用。结果表明,施入PAA提高了土壤的持水性能。在未加入PAA之前黑垆土的持水性能最低,塿土的最高,黄绵土的次之;加入PAA后,黑垆土的持水能力显著增加,几乎为对照的2倍,塿土和黄绵土也都比对照高。土壤的供水能力随PAA用量的增加而增强,不同土壤类型之间表现为:塿土>黑垆土>黄绵土。未加入PAA时,3种土壤饱和导水率大小为:塿土>黑垆土>黄绵土;加入PAA后,3种土壤的饱和导水率都降低,且基本随PAA用量的增加而降低。在一定水分条件下,PAA的施入提高了土壤的抗蒸发性能,随PAA用量的增加,塿土和黑垆土的土壤蒸发量增加,但都低于对照,而黄绵土的土壤蒸发量随PAA用量的增加而降低。其中施PAA54.5 mg/kg的塿土、黑垆土和施PAA225.8 mg/kg的黄绵土与对照相比,土壤蒸发量分别减少了44.0%,44.6%和30.6%。
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| 关 键 词： | PAA 土壤类型 土壤持水性能 土壤水分蒸发 |
Effects of PAA on Soil Preserving Water and Evaporation |
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| YANG Yong-hui,ZHAO Shi-wei,WU Pu-te,WU Ji-cheng,FENG Hao,HUANG Zhan-bin,SHI Wan-li.Effects of PAA on Soil Preserving Water and Evaporation[J].Journal of Irrigation and Drainage,2009(5). |
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| Authors: | YANG Yong-hui ZHAO Shi-wei WU Pu-te WU Ji-cheng FENG Hao HUANG Zhan-bin SHI Wan-li |
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| Institution: | YANG Yong-hui1,2,3,4,ZHAO Shi-wei1,WU Pu-te1,WU Ji-cheng4,FENG Hao1,HUANG Zhan-bin5,SHI Wan-li6(1.Northwest A & F University,Yangling 712100,China,2.Institute of Soil and Water Conservation,Chinese Academy of Sciences,3.National Engineering Research Center for Water Saving Irrigation at Yangling,4.Institute of Plant Nutrition & Resource Environment,Henan Academy of Agricultural Sciences,Zhengzhou 450002,5.Department of Water Environment,China Insti... |
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| Abstract: | In order to clarify the effect of water conservation of PAA on main soil,such as Lou soil,Loessal soil and Dark loessial soil,of loess plateau,a method of soil column was used to measure soil water retaining capability,soil saturated hydraulic conductivity and evaporation capacity in three kind of soil of loess plateau by labtest.The results indicate that soil moisture was increased after applying PAA to field.When the PAA was not applied,the capability of preserving water of dark Loessial soil was lowest,t... |
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| Keywords: | PAA soil types water retaining capability soil water evaporation |
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