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- Title
玉米/大豆间作对根际土壤磷素生物有效性 和微生物群落结构的影响.
- Authors
顾嘉诚; 王文敏; 王振; 李鲁华; 蒋贵菊; 王家平; 程志博
- Abstract
To investigate the effect of maize/soybean intercropping on rhizosphere soil microbial communities and phosphorus (P) bioavailability, we examined the changes of soil bioavailable P fractions and microbial community characteristics in the monoculture and intercropping systems based on high-throughput sequencing. The results showed that maize/soybean intercropping increased the contents of rhizosphere soil organic matter (SOM), available phosphorus (AP), microbial biomass phosphorus (MBP), and aboveground biomass. The increase of AP was mainly related to the increasing enzyme extracted phosphorus (Enzyme-P) and hydrochloric acid extracted phosphorus (HCl-P) contents. The dominant bacterial phyla under each treatment were Proteobacteria, Actinobacteria, Acidobacteria and Chloroflexi, while the dominant bacterial genera were Nocardioides, Solirubacter, Sphingomonas and Arthrobacter, with Proteobacteria and Sphingomonas having the highest relative abundance. The relative abundance of Proteobacteria and Sphingomonas in intercropping maize rhizosphere soil was significantly higher than that in monoculture, and that of Proteobacteria in intercropping soybean rhizosphere soil was significantly higher than monoculture. Soil properties and P fractions were closely related to the rhizosphere soil microbial composition. In all, maize / soybean intercropping could affect the rhizosphere soil P bioavailability by altering the structure of rhizosphere microbial communities.
- Subjects
CATCH crops; MICROBIAL communities; RHIZOSPHERE; SOYBEAN; INTERCROPPING
- Publication
Yingyong Shengtai Xuebao, 2023, Vol 34, Issue 11, p3030
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001--9332.202311.015