%0 Journal Article
%T The N variations of paddy fields and amounts of soil microorganisms in rice-duck complex ecosystems<br>稻鸭共作对稻田氮素变化及土壤微生物的影响
%A LI Cheng-Fang
%A CAO Cou-Gui
%A ZHAN Ming
%A WANG Jin-Ping
%A <br>李成芳
%A 曹凑贵
%A 展茗
%A 汪金平
%J 生态学报
%D 2008
%I 
%X Research on N variations in field surface water and soils, rules of N uptakes of rice and amounts of soil microorganisms in rice-duck ecosystem was conducted by field experiments. The results showed: (1)Compared with conventional paddy fields, total nitrogen content in surface water and soils increased appreciably in rice-duck complex ecosystem, and NH+4 content in the field surface water and soils and N uptake of rice increased significantly in rice-duck complex ecosystem, meanwhile NO-3 content in the field surface water and soils scarcely any changed; (2) Rice-duck complex ecosystem boosted significantly total N uptake of rice and 17.8% higher than that of conventional paddy fields. Correlation analysis revealed that the relation between N uptake of rice and NH+4 content was fitted with by a unitary quadratic equation; (3) Rice-duck complex ecosystem could increase significantly soil microorganisms amount, in which bacteria amount were largest, actinomyces amount took second and the fungi amount were least.
%K Rice-duck complex ecosystems
%K NH+4
%K NO-3
%K soil microorganisms
%K N uptake<br>稻鸭共作
%K NH
%K 4
%K NO-3
%K 土壤微生物
%K 吸N量
%K 稻鸭
%K 稻田土壤
%K 氮素
%K 变化规律
%K 土壤微生物
%K 影响
%K ecosystems
%K complex
%K soil
%K microorganisms
%K paddy
%K fields
%K 真菌
%K 放线菌
%K 细菌数
%K 相关分析
%K 关系
%K 二次方程式
%K 显示
%K 水稻总
%K 含量
%K 稻作
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=63E0FACCA26B60EA82D5293D780B6576&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=94C357A881DFC066&sid=36AB0E5A289F748B&eid=EFD6E4E23EC223307EE7367BB4C0D78D&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=59