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- Title
Effects of Sea Rice on Soil Chemical Properties and Microbial Community Structure in Coastal Solonchaks.
- Authors
LI Huijun; ZHANG Weijian; WU Weijian; LI Gaoyang; CHEN Yijie; HUANG Fengcheng; HUANG Yongxiang; LIN Zhong; ZHEN Zhen
- Abstract
To investigate the effects of sea rice cultivation on microbial community of coastal saline soil and its relationship with environmental factors, the soils with 0.2% and 0.6% salt concentration were as materials, in which sea rice was grown as treatment groups (S1 and S2) and no plant as control groups (CK1 and CK2) . The chemical properties, nutrient content and microbial community structure of soil under different treatments were determined. The results showed that, after planting sea rice, the contents of humus, available phosphorus and available potassium significant increased, which peaked at 19.26 gµkg-1, 40.61 mgµkg-1, 98.33 mgµkg-1, and 17.42 gµkg-1, 34.79 mgµkg-1, 88.69 mgµkg-1 under S1 and S2 treatments in the heading stage, respectively. At the same time, the contents of alkali-hydrolytic nitrogen, ammonium nitrogen and nitrate nitrogen of soil significantly increased after planting sea rice, and the contents were the highest at heading stage. Compared with the control group, the microbial biomass carbon (MBC), microbial biomass nitrogen (MBN) and microbial respiratory activity (MR) under treatment groups increased significantly, which increased 190.42%, 234.13% and 93.33% in S1 treatment, 195.33%, 184.26% and 108.14% in S2 treatment, respectively. At the same time, the planting sea rice had significant effects on the diversity of coastal saline soil microbial community structure. The relative abundances of dominant microfloras under S1 treatment were significantly higher than those under S2 treatment. Under S1 treatment, the relative abundances of Burkholderiacea, Chitinophagacea, Methylophilacea, Pyrinomonadaceae, Sphingomonadaceae, Blastocatellaceae increased significantly by 75.63%, 4.01%, 54.67%, 65.03%, 99.11%, 49.93%, 119.75%, respectively. Under S2 treatment, the relative abundances of Burkholderiacea, Methylophilacea, Blastocatellaceae, Nitrosomonadaceae increased significantly by 29.83%, 28.17%, 148.84%, 44.81%, respectively. Correlation analysis showed that pH of soil was extremely significant positively correlated with the relative abundance of Burkholderiaceae and Methylophilaceae, while the contents of Humus, the soil alkali-hydrolytic nitrogen, ammonium nitrogen, nitrate nitrogen were extremely significant positively correlated with the relative abundance of Pyrinomonadaceae and Blastocatellaceae.
- Subjects
MICROBIAL communities; CHEMICAL properties; SOIL salinity; RICE; NITROGEN in soils; POTASSIUM
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2023, Vol 25, Issue 9, p147
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2022.0294