| 施用保水剂对土壤氮素淋溶及脲酶活性的影响 |
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| 引用本文： | 车明超,黄占斌,王晓茜,李文颖,锅圆,吴鹏,谢娜.施用保水剂对土壤氮素淋溶及脲酶活性的影响[J].农业环境科学学报,2010,29(Z1). |
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| 作者姓名： | 车明超 黄占斌 王晓茜 李文颖 锅圆 吴鹏 谢娜 |
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| 作者单位： | 1. 中国矿业大学(北京)化学与环境工程学院,北京,100083
2. 中国矿业大学(北京)化学与环境工程学院,北京,100083;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 国家自然科学基金(40971164);;黄土高原土壤侵蚀与旱地农业国家重点实验室基金课题(10501-258) |
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| 摘 要： | 为了分析保水剂对土壤氮素淋溶效应和土壤脲酶活性影响,通过模拟试验,对施用同量尿素条件下,三种不同类型高分子保水剂(聚丙烯酸钠保水剂、有机-无机复合保水剂、腐植酸型保水剂)对尿素淋溶和土壤脲酶活性进行比较。多次灌水淋溶实验表明,三种保水剂都明显降低了土壤尿素淋失,保肥效果明显。在前三次灌水淋溶中,三种保水剂施用的土壤脲酶活性略高于未施尿素的对照,之后灌水时基本相同,说明保水剂对脲酶活性有一定促进作用,有利于植物更好的吸收氮素。随灌水次数增加,所有处理的土壤脲酶活性都有明显减少,与淋溶液氮素淋出量趋势相同。其中施用聚丙烯酸钠盐保水剂降低氮素流失,提高肥料利用效率效果较优。
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| 关 键 词： | 保水剂 氮素 尿素 淋溶 脲酶 |
Effects of SAP Application on Nitrogen Eluviations and the Urease Activity of Soil |
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| CHE Ming-chao,HUANG Zhan-bin,WANG Xiao-qian,LI Wen-ying,GUO Yuan,WU Peng,XIE Na.Effects of SAP Application on Nitrogen Eluviations and the Urease Activity of Soil[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2010,29(Z1). |
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| Authors: | CHE Ming-chao HUANG Zhan-bin WANG Xiao-qian LI Wen-ying GUO Yuan WU Peng XIE Na |
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| Institution: | 1.School of Chemical & Environmental Engineering/a>;China University of Mining & Technology/a>;Beijing 100083/a>;China/a>;2.The State Key Laboratory of Soil Erosion and Dry-land Farming on Loess Plateau/a>;Institute of Soil and Water Conservation/a>;CAS and MWR/a>;Yangling 712100/a>;China |
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| Abstract: | Chemical agent application is an important way to decrease nitrogen fertilizer losing and raise the use efficiency.In order to analyze the inference of super Absorbent polymer(SAP)on nitrogen eluviations and the urease activity of soil,it was used simulation experiment to study the effects of three kinds of SAP,including polyacrylic acid SAP,organic-inorganic hybrid SAP and humic acid-contained SAP,on usea eluviations and the urease activity of soil.Under same level of urea fertilizer application,multiple i... |
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| Keywords: | super absorbent polymer(SAP) nitrogen urea urease eluviations |
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