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Effect of the phenological stage of rice growth on soil soluble inorganic nitrogen and bacterial community in a yellow clayey under different fertilization patterns*(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2019 06
Page:
1-10
Research Field:
Articles
Publishing date:

Info

Title:
Effect of the phenological stage of rice growth on soil soluble inorganic nitrogen and bacterial community in a yellow clayey under different fertilization patterns*
Author(s):
WANG Yi1 YANG Wenhao1 2 MAO Yanling1 2 ZHOU Biqing1 2 NIE Sanan1 3 & XING Shihe1 2**
1 College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2 Key Laboratory of Soil Ecosystem Health and Regulation, Fujian Agriculture and Forestry University , Fuzhou 350002, China
3 College of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
Keywords:
fertilization pattern rice growth stages soil bacteria abundance and community soluble inorganic nitrogen
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.01046
DocumentCode:

Abstract:
The aim of this study was to reveal the dynamics of soil bacterial community and its effect on soil soluble inorganic nitrogen in paddy soil during rice growth period under different fertilization patterns . A yellow clayey paddy soil with 33 years different fertilization treatments, i.e. control (CK) chemical fertilizer (NPK), chemical fertilizer combined with cow manure (NPKM) and chemical fertilizer combined with rice straw (NPKS) in Fujian province was used in this study. The bacterial abundance, diversity and community structure as well as soil soluble inorganic nitrogen in the paddy field at seedling, tillering, booting, flowering and ripening stage respectively, were analyzed by Real T ime quantitative PCR and High-throughput sequencing. The results showed that the ammonium concentration in yellow clayey paddy soil ranged from 6.01 to 30.93 mg/kg and was the main pattern of soluble inorganic nitrogen. The 16S rRNA gene copy number was ranged from 3.03×107 to 14.33×10 7 g -1 dry soil, thus t he abundance of soil bacteria changed greatly during the rice growth stages. The dominant bacterial communities in yellow clayey paddy soil were Proteobacteria, Chloroflexi, Actinobacteria and Acidobacteria. Partial Least Squares Discriminant Analysis (PLS-DA) showed that booting stage indicates great variables on bacteria communities compared with other growth stages of rice, while inorganic fertilizers combined with organic fertilizers (NPKS and NPKM) show ed great variables in comparison to different treatments. The PERMANOVA result indicated that the rice growth stages accounted for 59.79% variation of bacterial community structure, while the treatment explained 10.44% variation of bacterial community structure. The soil ammonium concentration was positively correlated with the abundance of total bacteria (P < 0.05). We concluded that soil bacterial community was related to the concentration of soil ammonium nitrogen in paddy soil. The differences of bacterial community structure were more likely to be influenced by rice growth stages rather than fertilization patterns.

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Last Update: 2019-05-09