| 水稻根际反硝化细菌生态分布的研究 |
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| 引用本文： | 李振高,万焕楣,吴留松,乔凤珍.水稻根际反硝化细菌生态分布的研究[J].土壤学报,1987,24(2):120-126. |
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| 作者姓名： | 李振高 万焕楣 吴留松 乔凤珍 |
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| 作者单位： | 中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所 |
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| 摘 要： | 本文报道了三种土壤中水稻根际反硝化细菌的生态分布及两种作物对根际反硝化细菌的影响.结果表明:水稻各生育期菌数均以根面大于根际,又大于根外,R/S值为10-100以上.水稻与大麦的根面及根际反硝化细菌与细菌总数均以抽穗期最多,成熟期菌数明显下降,但水稻不同生育期菌数高于大麦相应时期的菌数.其优势种根面比根际者单纯;同一土壤中不同作物根面反硝化细菌优势种有明显差异;不同土壤中同一作物根面、根际反硝化细菌优势种差异不明显.
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STUDIES ON THE ECOLOGICAL DISTRIBUTION OF DENITRIFYING BACTERIA IN RHIZOSPHERE OF RICE |
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| Li Zhengao,Wan Huanmei,We Liusong and Qiao Fengzhen.STUDIES ON THE ECOLOGICAL DISTRIBUTION OF DENITRIFYING BACTERIA IN RHIZOSPHERE OF RICE[J].Acta Pedologica Sinica,1987,24(2):120-126. |
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| Authors: | Li Zhengao Wan Huanmei We Liusong and Qiao Fengzhen |
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| Institution: | Institute of Soil Science, Academia Sinica, Nanjing;Institute of Soil Science, Academia Sinica, Nanjing;Institute of Soil Science, Academia Sinica, Nanjing;Institute of Soil Science, Academia Sinica, Nanjing |
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| Abstract: | The ecological distribution of denitrifying bacteria in the three soils on rhizoplane and in rhizosphere of rice and barley was studied.Results showed that the total amount of bacteria was larger on rhizoplane than in rhizosphere and non-rhizosphere soil in each growing period of rice.The ratio of R/S was above 10-100.The total amounts of bacteria or denitrifying bacteria in rice and barley rhizosphere attained to the maximum during heading period,however,there was a marked dropping in ripening period.It was clear that the amount of bacteria in rhizosphere of rice was higher than that in rhizosphere of barley in each corresponding period. |
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