中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 土壤可溶性有机氮及土壤微生物对其调控的研究进展 福建农业学报 2015 (9) 919-925
Position: Home > Articles > Soluble Organic Nitrogen and Its Transformation Regulated by Microbes in Soil:a Review Fujian Journal of Agricultural Sciences 2015 (9) 919-925

土壤可溶性有机氮及土壤微生物对其调控的研究进展

作  者：
钟珍梅;杨庆;游小凤;黄秀声;翁伯琦;刑世和;冯德庆;陈钟佃
单  位：
福建农林大学资源环境学院;福建省农业科学院农业生态研究所
关键词：
DON;SON;土壤微生物;胞外解聚酶;菌根真菌
摘  要：
有机氮是土壤氮素的主要存在形式,土壤中有机氮大多以聚合物形式存在,经过一系列复杂的生物和非生物过程转变成可溶性有机氮。本文总结了不同生态系统可溶性有机氮的研究现状,指出当前可溶性有机氮的研究主要集中在森林生态系统、草地生态系统和农业生态系统,在不同的生态系统中,由于土壤类型、土地利用类型、覆盖的植被类型、土壤管理措施和环境因素等的不同,土壤可溶性有机氮的含量和组分均存在差异。本文还综述了当前可溶性有机氮生物转化过程的研究现状,指出可溶性有机氮含量与土壤微生物的数量、组分及胞外酶的活性有关,其生物转化过程为:在土壤微生物(细菌、真菌等)及胞外解聚酶如蛋白酶、几丁质酶等的作用下,大分子有机氮降解为小分子有机氮,被植物和微生物直接吸收利用,或进一步降解为NH+4和NO-3被植物和微生物吸收利用。认为未来应该加强土壤有机氮转化代谢过程的调控机制研究。
译  名：
Soluble Organic Nitrogen and Its Transformation Regulated by Microbes in Soil:a Review
作  者：
ZHONG Zhen-mei;YANG Qing;YOU Xiao-feng;HUANG Xiu-sheng;WENG Bo-qi;XING Shi-he;FENG De-qing;CHEN Zhong-dian;Agricultural Ecological Institute.Fujian Academy of Agricultural Sciences;Fuzhou Scientific Observing and Experimental Station of Agro-Environment,Ministry of Agriculture;College of Resource and Environmental Science,Fujian Agriculture and Foresty University;
关键词：
dissolved organic nitrogen;;soluble organic nitrogen;;soil microbe;;extracellular depolymerase;;mycorrhizal fungi
摘  要：
In soil,nitrogen mostly exists in the form of organic polymers,which can transform into soluble organic nitrogen(SON)through a series of complex biological and non-biological processes.In this paper,SON refers to the organic nitrogen extracted by water or salt solution,rather than the dissolved organic nitrogen(DON)collected in situ.Currently,the research on SON largely focuses on forest-,grassland-and/or agro-ecosystems.There are differences in the content and composition of the soil SON in different ecosystems that vary in soil type,land use,vegetation,soil management and/or environmental factors.A great deal of the information obtained thus far indicates a correlation between SON content and the quantities and components of the microorganisms in soil,the activities of extracellular enzymes,etc.The transformation process may include breakdown of the polymeric nitrogen by bacteria,fungi and/or extracellular depolymerases secreted by microbes in soilor plants into soluble subunits that can be utilized by microorganisms or plants.The soluble subunits may also be further degraded into ammonium(NH+4)and nitrate(NO-3),which are the preferred N source for bacteria,fungi and plants.At present,few study targets the microbes that are capable of degrading organic nitrogen into subunits,while only a few reported the degradation and absorption of organic nitrogen by mycorrhizal fungi.Thus,future studies ought to be directed toward the understanding of the regulatory mechanisms of soil organic nitrogen transformation.

相似文章

导出引用
计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46