| 极度干旱区设施蔬菜地土壤硝态氮的分布特征 |
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| 引用本文： | 周光涛,田长彦. 极度干旱区设施蔬菜地土壤硝态氮的分布特征[J]. 干旱区资源与环境, 2011, 0(4): 189-192 |
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| 作者姓名： | 周光涛 田长彦 |
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| 作者单位： | 中国科学院新疆生态与地理研究所绿洲生态与荒漠重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家科技支撑计划(2007BAC20B03)资助 |
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| 摘 要： | 设施农业中过量施肥和灌溉不仅降低肥料利用率,且容易引发硝酸盐污染风险.以库尔勒英下乡露天菜地为参照,对该地大棚菜地年度氮素输入量、土壤剖面硝态氮累积特征,以及地下水硝态氮含量进行了研究.结果表明:氮素年度输入量大棚菜地＞露天菜地;两种种植方式0-180cm土壤均出现了硝酸盐的明显累积,大棚菜地硝态氮累积量随种植年限的增...
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| 关 键 词： | 库尔勒 设施农业 蔬菜 土壤硝态氮累积 |
Nitrate-nitrogen distribution in intensive plantation field in extreme arid area,Xinjiang,northwestern China |
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| ZHOU Guangtao,TIAN Changyan. Nitrate-nitrogen distribution in intensive plantation field in extreme arid area,Xinjiang,northwestern China[J]. Journal of Arid Land Resources and Environment, 2011, 0(4): 189-192 |
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| Authors: | ZHOU Guangtao TIAN Changyan |
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| Affiliation: | ZHOU Guangtao1,2,TIAN Changyan1(1 Key laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,P.R.China,2 Graduate University of Chinese Academy of Sciences,Beijing 100049,P.R.China) |
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| Abstract: | Excessive fertilizer level and irrigation contributing to high nitrate pollution potentials are problems because of low N use efficiency in intensive cultivation.The objectives of this study were to determine applied N,the nitrate accumulated in the 0-180 cm layer of soil profile and the nitrate concentration of the groundwater in intensive vegetable fields in southern outskirt of Korla Oasis,northwestern China.Results showed that N inputs of the greenhouse vegetables were much higher compared to the fied v... |
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| Keywords: | Korla intensive agriculture vegetable nitrate accumulation |
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