外加碳源和氮源对酸化水稻土温室气体释放的影响  

Effects of Carbon and Nitrogen Resource Addition on Greenhouse Gas Emission in Acidified Paddy Soils

作　　者：朱春权 韦翠珍[2] 曹小闯 朱练峰 孔亚丽 金千瑜 张均华 ZHU Chunquan;WEI Cuizhen;CAO Xiaochuang;ZHU Lianfeng;KONG Yali;JIN Qianyu;ZHANG Junhua(China National Rice Research Institute/State Key Laboratory of Rice Biology,Hangzhou 310006,China;Huaihe Water Resources Protection Science Institute,Bengbu,Anhui 233001,China)

机构地区：[1]中国水稻研究所/水稻生物学国家重点实验室,杭州310006 [2]淮河水资源保护科学研究所,安徽蚌埠233001

出　　处：《中国稻米》2020年第6期40-45,共6页China Rice

基　　金：国家自然科学基金青年项目(31901452);国家重点研发计划资助项目(2016YFD0101801);国家自然科学基金面上项目(31872857);浙江省自然科学基金(LY18C020005);中央级公益性科研院所基本科研业务费专项(2017RG004-2)。

摘　　要：通过室内恒温培养试验,对酸化水稻土单独添加硫酸铵以及同时添加硫酸铵和葡萄糖后发现,添加硫酸铵后短时间内(2 d)就引起pH值下降和铵态氮转化为硝态氮,外源添加葡萄糖后进一步引起pH值下降和促进铵态氮向硝态氮转化,这种差异在长期(120 d)培养后更加显著。硫酸铵显著引起NO和N2O气体释放,外源添加葡萄糖后进一步促进两种气体的释放。测定土壤微生物丰度发现,两种温室气体的释放与土壤中氨氧化细菌、氨氧化古菌和反硝化细菌存在显著相关性。在短期培养时,氨氧化细菌和反硝化细菌丰度的差异导致了同时添加葡萄糖处理的温室气体释放量高于单纯的添加硫酸铵培养组;在长期培养时,则是氨氧化细菌、氨氧化古菌和反硝化细菌导致了这种差异。A acidified paddy soil was used to incubated with ammonium sulfate along or ammonium sulfate together with glucose,the results showed that addition of ammonium sulfate significantly accelerated the soil acidification,increased the transformation of NH4+to NO3-at 2 d of incubation,and these differences was more significant after a long-term(120 days)incubation.Ammonium sulfate significantly caused the release of NO and N2O,and exogenous glucose further promoted the release of the two greenhouse gases.There was a significant correlation among the release of two greenhouse gases and ammonia oxidizing bacteria,ammonia oxidizing archaea and denitrifying bacteria.In the short-term incubation(2 days),the different abundance of ammonia oxidizing bacteria and denitrifying bacteria led to the higher greenhouse gas emission from the simultaneous addition of ammonium sulfate and glucose treatments than the simple ammonium sulfate treatment;in the long-term incubation(120 days),ammonia oxidizing bacteria,ammonia oxidizing archaea and denitrifying bacteria led to this difference.

关 键 词：酸化水稻土 温室气体 细菌 古菌 硝化作用 反硝化作用 

分 类 号：S511.06[农业科学—作物学]