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来自水稻根际的螺菌属细菌的固氮作用。

Nitrogen fixation by Spirillum sp. from rice roots.

作者信息

Nayak D N, Rao V R

出版信息

Arch Microbiol. 1977 Dec 15;115(3):359-60. doi: 10.1007/BF00446464.

Abstract

Nitrogen fixation by Spirillum sp. obtained from the roots of rice plants grown at different levels of combined nitrogen was studied. The roots of rice plants exposed to low levels of combined nitrogen (20--40 kg N/ha) harboured Spirillum sp. possessing higher nitrogen-fixing efficiency as compared to the cultures from plants receiving 60--100 kg N/ha. Moreover, the nitrogen-fixing efficiency of these Spirillum spp. varied with age of the plant, irrespective of the dosage of combined nitrogen.

摘要

对从生长在不同水平化合态氮条件下的水稻植株根部获取的固氮螺菌属细菌进行了固氮研究。暴露于低水平化合态氮(20 - 40千克氮/公顷)环境下的水稻植株根部所含的固氮螺菌属细菌,与从接受60 - 100千克氮/公顷的植株中培养出的细菌相比,具有更高的固氮效率。此外,这些固氮螺菌属细菌的固氮效率随植株年龄而变化,与化合态氮的用量无关。

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