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| 青铜峡灌区土壤中三氮变化特征研究 | |
| 引用本文： | 陈伟伟,粟晓玲,李强坤. 青铜峡灌区土壤中三氮变化特征研究[J]. 水利科技与经济, 2010, 16(10): 1177-1178,1180 |
| 作者姓名： | 陈伟伟 粟晓玲 李强坤 |
| 作者单位： | 1. 西北农林科技大学水利与建筑工程学院,陕西杨凌,712100;黄河水利科学研究院,郑州,450003 2. 西北农林科技大学水利与建筑工程学院,陕西杨凌,712100 3. 黄河水利科学研究院,郑州,450003 |
| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金 |
| 摘 要： | 以宁夏青铜峡灌区田间土壤中非点源污染物(总氮、硝氮、氨氮)作为研究对象,从土壤剖面中对其含量变化进行分析,结果表明:①表层土壤中各类污染物含量变化较大,基本上以60 cm深度为分界线,下层变化较小,而且作物生长期前后土壤中不同深度各类污染物含量变化与灌溉过程、施肥强度等关系密切;②土壤中三氮含量变化幅度呈硝氮氨氮全氮的趋势,总氮在10月份的含量高于5月份,氨氮、硝氮在10月份的含量低于5月份。 |
| 关 键 词： | 灌区 田间土壤 三氮 变化特征 |
Experimental Research on Variation Feature of Three Kinds of Nitrogen from Soil in Qingtongxia Irrigation Area |
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| CHEN Wei-wei,SU Xiao-ling,LI Qiang-kun. Experimental Research on Variation Feature of Three Kinds of Nitrogen from Soil in Qingtongxia Irrigation Area[J]. Water Conservancy Science and Technology and Economy, 2010, 16(10): 1177-1178,1180 | |
| Authors: | CHEN Wei-wei SU Xiao-ling LI Qiang-kun |
| Affiliation: | 1.College of Water Resources and Architecture Engineering,Northwest Agriculture and Forestry University,Yangling 712100,Shanxi,China;2.Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China) |
| Abstract: | An experiment was done to study non-point source pollutants from field soil in qingtongxia irrigation area,Ningxia.Based on this experiment,this paper tried to find out,,and content changes in soil profile.The result showed that：（1） The content of various pollutants in surface soil changed greatly,and changed smaller in lower soil,which the boundary line is a depth of 60cm basically in soil.Besides,before and after the crop growth period,its content changes in different soil layer had a close contact with the process of irrigation,fertilization intensity and other factors.（2） In soil,the content rate of three kinds of nitrogen was in the tendency for NO3——NNH4＋-NTN,and the content of in October was higher than that in May and the case of and was just the opposite.The rate of salt in paddy field was higher than that in dry field. |
| Keywords: | irrigation area field soil three kinds of nitrogen variation feature |
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