Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Techniques and Equipment for Environmental Pollution Control》 2003-07
Add to Favorite Get Latest Update

The progress of controlling nitrate pollution in vegetable fields using nitrogen-catch crops

Ren Zhihui 1 Chen Qing 2 Li Huafen 1* Zhang Hongyan 2 Li Xiaolin 2 (1. Department of Environmental Science and Engineering, China Agricultural University, Beijing 100094; 2. Key Laboratory of Plant Nutrition, MOA; Key Laboratory of Plant-Soil Interactions, MOE; Department of Plant Nutrition, China Agricultural University, Beijing 100094)  
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.
【Fund】: 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
【CateGory Index】: X53
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved