菜地氮素循环及其环境效应研究进展  

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

作　　者：胡晓霞[1,2] 丁洪[1] 张玉树[1] 秦胜金[1] 

机构地区：[1]福建省农业科学院土壤肥料研究所,福州350013 [2]福建农林大学资源与环境学院,福州350002

出　　处：《中国农学通报》2010年第10期287-294,共8页Chinese Agricultural Science Bulletin

基　　金：福建省自然基金重点项目"菜地土壤中氮素去向及其对环境影响评价"(2006J0009);福建省自然科学面上基金项目"果园土壤氮素硝化反硝化损失及N2O排放量研究"(2008J0120);福建省财政专项-福建省农业科学院科技创新团队建设基金"农业生态过程与资源合理利用"(STIF-Y01)

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。综合分析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。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 was summarized. The processes and the quantity feature of soil nitrogen input, interior transformation and output, including fertilization, atmosphere deposition, ammonification nitrogen fixation, ammonification, nitrification, denitrification, plant uptake, nitrogen accumulated, NH3 volatilization, runoff and NO3- leaching were introduced. The environmental effects of nitrogen loss were carried out.

关 键 词：蔬菜 氮素循环 环境效应 

分 类 号：S15[农业科学—土壤学]