| 填闲作物防治菜田土壤硝酸盐污染的研究进展 |
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| 引用本文： | 任智慧,陈清,李花粉,张宏彦,李晓林.填闲作物防治菜田土壤硝酸盐污染的研究进展[J].环境工程学报,2003,4(7):13-17. |
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| 作者姓名： | 任智慧 陈清 李花粉 张宏彦 李晓林 |
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| 作者单位： | 1. 中国农业大学环境科学与工程系,北京,100094
2. 农业部植物营养学重点实验室,教育部植物-土壤相互作用重点实验室,中国农业大学植物营养系,北京,100094 |
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| 基金项目： | 中德合作项目“提高华北地区农业生产力的研究”( 1998— 2 0 0 2 )资助 |
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| 摘 要： | 探讨了通过调整蔬菜生产的轮作结构 ,运用生物修复的原理 ,引入适宜的深根系填闲作物对深层土壤硝酸盐吸收利用 ,以避免硝酸盐进一步淋失 ,提高氮素的利用率的可行性。填闲作物应选择生长迅速、生物量大、氮素累积能力强的作物 ,在考虑填闲作物防治硝酸盐淋溶的同时 ,要兼顾其经济利用价值 ,并指出结合深根系的填闲作物进行合理轮作是蔬菜安全生产及可持续发展的途径之一
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| 关 键 词： | 填闲作物 硝酸盐 淋溶 再利用 |
| 修稿时间： | 2002年11月7日 |
The progress of controlling nitrate pollution in vegetable fields using nitrogen-catch crops |
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| Ren Zhihui,Chen Qing,Li Huafen,Zhang Hongyan,Li Xiaolin.The progress of controlling nitrate pollution in vegetable fields using nitrogen-catch crops[J].Techniques and Equipment for Environmental Pollution Control,2003,4(7):13-17. |
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| Authors: | Ren Zhihui Chen Qing Li Huafen Zhang Hongyan Li Xiaolin |
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| Institution: | Ren Zhihui 1 Chen Qing 2 Li Huafen 1* Zhang Hongyan 2 Li Xiaolin 2 |
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| Abstract: | Considering large amounts of nutrient demand and shallow root systems, frequent and enough water and nutrient supply is necessary for vegetable production. However, it is very easy to induce excessive water and nitrogen application and commonly resulted in nitrate pollution of groundwater. Through the introduction of N-catch crop with deep root system, it is possible to reutilize the nitrate-nitrogen leached out of root zone of vegetable in the vegetable-catch crop rotation system based on the phytoremediation principle. The selection of N-catch crop and the capacity of nitrate extraction from deep soil layer by catch crop were reviewed in the paper. It also pointed out that combining with N-catch crop in the rotation system had been regarded as a good approach for safe vegetable production. |
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| Keywords: | N-catch crop nitrate leaching reutilization |
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