首页 | 本学科首页   官方微博 | 高级检索  
     检索      

生物硝化抑制剂——一种控制农田氮素流失的新策略
引用本文:曾后清,朱毅勇,王火焰,沈其荣.生物硝化抑制剂——一种控制农田氮素流失的新策略[J].土壤学报,2012,49(2):382-388.
作者姓名:曾后清  朱毅勇  王火焰  沈其荣
作者单位:1. 南京农业大学资源与环境科学学院,南京,210095
2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008
基金项目:高粱分泌生物硝化抑制剂MHPP的调控机理研究
摘    要:农业生产中氮肥的施用是影响全球氮素循环的一个重要因素,在促进作物增产的同时,也对生态环境产生了重要的影响。由于铵态氮肥在旱地中很容易经过硝化作用转变为硝态氮,其中一小部分为植物所吸收,而大量的硝态氮被淋失,或经反硝化作用进入大气,造成土壤氮素严重损失。自然界中一些植物的根系能够分泌抑制硝化作用的物质,被称为生物硝化抑制剂,因而可以显著提高土壤氮素利用率。本文阐述了有关生物硝化抑制剂的由来、分泌调节、作用机制及其应用潜力,并探讨了其在农业生产中氮素高效管理等方面的应用前景。

关 键 词:硝化作用  生物硝化抑制剂  氮素利用率
收稿时间:2011/8/20 0:00:00
修稿时间:2011/10/24 0:00:00

BIOLOGICAL NITRIFICATION INHIBITOR-A NEW STRATEGY FOR CONTROLLING NITROGEN LOSS FROM FARMLAND
Zeng Houqing,Zhu Yi Yong,Wang Huoyan and Shen Qirong.BIOLOGICAL NITRIFICATION INHIBITOR-A NEW STRATEGY FOR CONTROLLING NITROGEN LOSS FROM FARMLAND[J].Acta Pedologica Sinica,2012,49(2):382-388.
Authors:Zeng Houqing  Zhu Yi Yong  Wang Huoyan and Shen Qirong
Institution:Nanjing Agricultural University
Abstract:Application of nitrogen fertilizers in agricultural systems is one of the most important factors influencing the global nitrogen cycle. Nitrogen fertilizers can improve crop production, but also have much influence on ecological environment. Nitrogen fertilizers in ammonium form (NH4+) is easily transferred into nitrate form (NO3-) in dry land by nitrification. However, only a small portion of the formed NO3- can be taken up by plants, while a large amount will be leached or released into the air through denitrification, which results in severe nitrogen loss. In nature some plants can excrete through their roots some compounds that have the function of inhibiting nitrification and thus can be characterized as biological nitrification inhibitor (BNI), which may significantly improve nitrogen use efficiency in soil. This review illustrates the origin, excretion and regulation of the substances, mechanisms of their function and potential of their application, and also discusses prospects of their application to high efficiency management of nitrogen in agricultural systems.
Keywords:Nitrification  Biological nitrification inhibitor (BNI)  Nitrogen use efficiency
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《土壤学报》浏览原始摘要信息
点击此处可从《土壤学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号