Microbial carbon source utilization in rice rhizosphere and nonrhizosphere soils with short-term manure N input rate in paddy field

Carbon (C) plays a vital role in regulating soil nutrient cycling and increasing soil microbial community, but there is still limited information on how C source utilization characteristics responds to soil physical and chemical properties changes under double-cropping rice ( Oryza sativa L.) paddy...

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Bibliographic Details
Published in:Scientific reports 2020-04, Vol.10 (1), p.6487-6487, Article 6487
Main Authors: Haiming, Tang, Xiaoping, Xiao, Chao, Li, Xiaochen, Pan, Kaikai, Cheng, Weiyan, Li, Ke, Wang
Format: Article
Language:English
Subjects:
704/158
704/172/4081
Agricultural Irrigation
Agrochemicals
Amino acids
Carbon - metabolism
Carbon Cycle
Carbon sources
Carboxylic acids
Cereal crops
Chemical properties
China
Crop Production - methods
Crops, Agricultural - growth & development
Crops, Agricultural - microbiology
Double cropping
Fertilizers
Growth rate
Humanities and Social Sciences
Manure
Manures
Microbiota - physiology
Microorganisms
multidisciplinary
Nitrogen - metabolism
Nutrient cycles
Organic fertilizers
Organic wastes
Oryza - growth & development
Oryza - microbiology
Rhizosphere
Rice fields
Science
Science (multidisciplinary)
Short term
Soil - chemistry
Soil Microbiology
Soil microorganisms
Soil nutrients
Soils
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Summary:Carbon (C) plays a vital role in regulating soil nutrient cycling and increasing soil microbial community, but there is still limited information on how C source utilization characteristics responds to soil physical and chemical properties changes under double-cropping rice ( Oryza sativa L.) paddy field in southern China. Therefore, the effects of different short-term manure nitrogen (N) input rate managements on C source utilization characteristics in rice rhizosphere and non-rhizosphere soils under double-cropping rice field in southern China were studied by using 18 O-H 2 O method. Therefore, a field experiment were established in Ningxiang city of Hunan Province, and five different fertilizer treatments were applied: (1) 100% N of chemical fertilizer (M0), (2) 30% N of organic manure and 70% N of chemical fertilizer (M30), (3) 50% N of organic manure and 50% N of chemical fertilizer (M50), (4) 100% N of organic manure (M100), and (5) without N fertilizer input as control (CK). The results showed that soil microbial biomass C content, soil microbial growth rate, and soil microbial basal respiration with application of organic manure treatments (M30, M50, M100) were significantly higher ( p  
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-020-63639-8