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中国农学通报 ›› 2011, Vol. 27 ›› Issue (4): 36-41.

• 林学 园艺 园林 • 上一篇    下一篇

草地早熟禾及沿阶草对古油松和古侧柏土壤微生物数量特征的影响

甄莉娜 徐荣 周禾   

  • 收稿日期:2010-10-18 修回日期:2010-12-03 出版日期:2011-02-10 发布日期:2011-02-10

Influence of Poa pratensis and Ophiopogon japonecus on the soil microbial community of ancient Pinus tabulaeformis and ancient Platycladus orientalis

  • Received:2010-10-18 Revised:2010-12-03 Online:2011-02-10 Published:2011-02-10

摘要:

本试验研究了草地早熟禾与沿阶草作为古油松和古侧柏下垫面后,对古树土壤三大类微生物及生理类群数量特征的影响。结果表明,土壤三大微生物数量均为细菌>放线菌>真菌,且0-20cm土层微生物数量高于20-40cm;草地早熟禾与沿阶草的建植可增加古树0-40cm土层土壤三大微生物的数量,草地早熟禾的增加效果好于沿阶草。两种草坪草均增加了古树0-40cm土层反硝化细菌的数量,降低了古树0-40cm土层自生固氮菌的数量,同时可促进0-40cm土层纤维素分解菌数量的增加,但这种影响不显著。

关键词: 抗氧化酶, 抗氧化酶

Abstract:

Abstract: This research selects two common ancient trees(ancient Pinus tabulaeformis and ancient Platycladus orientalis),and two common turfgrasses(Poa pratensis and Ophiopogon japonecus) in Beijing,in order to find the influence of the grass to the ancient trees underlaying surface,we measured microbial numbers of the soil in depth 0-40cm.The number of the bacteria,fungi and actinomycete in 0-20cm layer is higher than 20-40cm,the number of the bacteria is higher than fungi and actinomycete.The two grasses increase the number of soil microorganisms of the old trees in depth 0-40cm,and the Poa pratensis is better than the Ophiopogon japonecus.The two grasses can all increase denitrifying bacteria in 0-40cm and reduce the number of nitrogen-fixing bacteria in the layer of 0-40cm and the two of this trend is not significant.The two grasses can all increase Cellulose-decomposing bacterium’s number in 0-40cm layer.