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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (10): 287-294.

所属专题： 园艺

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

菜地氮素循环及其环境效应研究进展

胡晓霞1,2,丁洪1,张玉树1,秦胜金1   

  • 收稿日期:2009-12-23 修回日期:2010-03-06 出版日期:2010-05-20 发布日期:2010-05-20
  • 基金资助:

    福建省自然基金重点项目;福建省自然基金项目;省财政专项--福建省农业科学院科技创新团队建设基金

Research Progress on Nitrogen Cycling and Its Environment Effects in Vegetable Crop-Soil System

Hu Xiaoxia1,2, Ding Hong1, Zhang Yushu1, Qin Shengjin1   

  • Received:2009-12-23 Revised:2010-03-06 Online:2010-05-20 Published:2010-05-20

PDF (PC)

1791

摘要：

菜地生态系统氮肥投入量大、氮素循环强度高、损失量大。本文综述了菜地土壤氮素转化与循环的研究现状；介绍了施肥、大气沉降、自生固氮、氨化、硝化、反硝化、植物吸收、硝酸盐累积、NH3的挥发、地表径流、NO3- 淋溶等菜地土壤氮素输入、转化和输出的途径和过程及其数量特征；论述了氮素损失对环境的影响。

关键词: 道路绿化带, 道路绿化带, 景观多样性, 郑州市

Abstract:

The intensity of nitrogen cycling in vegetable crop-soil system is high and the amount of nitrogen losses is great with various losing ways because of the excessive fertilization. In this paper, the status were summarized. The processes and the quantity feature of soil nitrogen input, interior transformation and output, including fertilization, atmosphere desposition, ammonification nitrogenfixation, ammonification, nitrification, denitrification,plant uptake, nitrogen accumulated, NH3 volatilization, runoff and NO3- leaching were introduced. The environmental effects of nitrogen loss were carried out.