蚯蚓对土壤碳氮循环的影响及其作用机理研究进展  

Progress and Prospect of Effect and Mechanism of Earthworm on the Cycle of Soil Carbon and Nitrogen

作　　者：贺慧[1,2] 郑华斌[2,3] 刘建霞[1,2] 姚林[1,2] 黄璜[2,3] 

机构地区：[1]湖南农业大学生物科学技术学院,长沙410128 [2]农业部华中地区作物栽培科学观测实验站,长沙410128 [3]湖南农业大学农学院,长沙410128

出　　处：《中国农学通报》2014年第33期120-126,共7页Chinese Agricultural Science Bulletin

基　　金："十二五"农业公益性行业项目"‘稻-渔’耦合养殖技术研究与示范"(201203081);长江中游南部(湖南)水稻丰产节水节肥技术集成与示范(2013BAD07B11)

摘　　要：蚯蚓是一种大型的土壤动物,在土壤碳氮循环中起着重要作用。从植被生产力、有机质的矿化分解、生物利用等方面总结了蚯蚓在土壤碳循环和氮循环中的影响及其作用的内在机理,蚯蚓通过对土壤的取食、钻孔,以及自身代谢产生的粪便和分泌物提高了植被生产力、增加了土壤碳库存量和土壤—大气碳通量、增加了生物固氮作用、加速了凋落物的碎屑和分解、加速了土壤氮素的矿化和反硝化作用的进行、减少了土壤氮的淋失,提出了蚯蚓在稻田生态系统的应用前景,为培肥土壤和土壤的可持续性利用提供理论依据和指导意义。Earthworm, as a large- size soil animal, plays an important role in the cycle of soil carbon andnitrogen. The paper summarized the effect and mechanism of earthworm in the soil carbon and nitrogen cyclesuch as plant productivity, mineralization and decomposition of organic matter and bio- utilization. Thedisturbance of earthworms, such as eating soil, feces drilling, and their droppings and secretions produced bythe metabolism, improved plant productivity, increased soil carbon stock and the flux of atmospheric- soil,increased biological nitrogen fixation, accelerate the debris and decomposition of the litterfall, accelerated soilnitrogen mineralization and denitrification and reduced soil nitrogen leaching. The research put forward theapplication prospect of earthworm in the paddy ecosystem and provided some theoretical foundation andguiding significance for the improvement of soil fertility and the sustainable use of soil.

关 键 词：影响 作用机理 稻田生态系统 碳库 氮库 蚯蚓 

分 类 号：S154.1[农业科学—土壤学] S154.5[农业科学—农业基础科学]