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Front. Agric. China    2007, Vol. 1 Issue (4) : 424-429     DOI: 10.1007/s11703-007-0070-3
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Spatial variation in organic carbon, nutrients and microbial biomass contents of paddy soils in a hilly red soil region
TANG Guoyong, XIAO He′ai, SU Yirong, HUANG Daoyou, LIU Shoulong, HUANG Min, TONG Chengli, WU Jinshui
The Key Laboratory of Subtropical Agro-ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
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Abstract The contents of soil organic C (SOC), total N (TN), total P (TP), dissolved N (DN), Olsen-P, and microbial biomass C, N, P (BC, BN, BP) of 254 paddy soils (0–18 cm in depth) in a hilly red soil region of subtropical zone of China were studied. The results showed that the contents of SOC, TN, BC, BN and DN of paddy soils at the bottom of hills were 14.6%, 13.6%, 24.6%, 20.4% and 95.8% higher than those at the foothill, respectively. The Olsen-P content of paddy soils at the foothill was 33.3% higher than that at the bottom of hills. However, the differences in TP, BP and available P (the sum of BP and Olsen-P) contents were not significant between the two positions. In addition, the ratios of soil C/P, BC/BP and BC/SOC of paddy soils at the bottom of hills were 12.7%, 28.5% and 8.2% higher than those at the foothill, respectively, but the differences in ratios of soil C/N, BC/BN, BN/TN and BP/TP were not statistically significant between various positions.
Issue Date: 05 December 2007
 Cite this article:   
XIAO He’ai,TANG Guoyong,TONG Chengli, et al. Spatial variation in organic carbon, nutrients and microbial biomass contents of paddy soils in a hilly red soil region[J]. Front. Agric. China, 2007, 1(4): 424-429.
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http://journal.hep.com.cn/fag/EN/10.1007/s11703-007-0070-3
http://journal.hep.com.cn/fag/EN/Y2007/V1/I4/424
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XIAO He’ai
TANG Guoyong
TONG Chengli
SU Yirong
HUANG Daoyou
LIU Shoulong
WU Jinshui
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