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Journal of Zhejiang University SCIENCE B 2012 Vol.13 No.4 P.274-282


Fertilization increases paddy soil organic carbon density

Author(s):  Shao-xian Wang, Xin-qiang Liang, Qi-xiang Luo, Fang Fan, Ying-xu Chen, Zu-zhang Li, Huo-xi Sun, Tian-fang Dai, Jun-nan Wan, Xiao-jun Li

Affiliation(s):  Institute of Environmental Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China; more

Corresponding email(s):   liang410@zju.edu.cn

Key Words:  Soil organic carbon (SOC), SOC density, Long-term fertilization, Paddy soil

Shao-xian Wang, Xin-qiang Liang, Qi-xiang Luo, Fang Fan, Ying-xu Chen, Zu-zhang Li, Huo-xi Sun, Tian-fang Dai, Jun-nan Wan, Xiao-jun Li. Fertilization increases paddy soil organic carbon density[J]. Journal of Zhejiang University Science B, 2012, 13(4): 274-282.

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journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

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%T Fertilization increases paddy soil organic carbon density
%A Shao-xian Wang
%A Xin-qiang Liang
%A Qi-xiang Luo
%A Fang Fan
%A Ying-xu Chen
%A Zu-zhang Li
%A Huo-xi Sun
%A Tian-fang Dai
%A Jun-nan Wan
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1100145

T1 - Fertilization increases paddy soil organic carbon density
A1 - Shao-xian Wang
A1 - Xin-qiang Liang
A1 - Qi-xiang Luo
A1 - Fang Fan
A1 - Ying-xu Chen
A1 - Zu-zhang Li
A1 - Huo-xi Sun
A1 - Tian-fang Dai
A1 - Jun-nan Wan
A1 - Xiao-jun Li
J0 - Journal of Zhejiang University Science B
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.B1100145

Field experiments provide an opportunity to study the effects of fertilization on soil organic carbon (SOC) sequestration. We sampled soils from a long-term (25 years) paddy experiment in subtropical China. The experiment included eight treatments: (1) check, (2) PK, (3) NP, (4) NK, (5) NPK, (6) 7F:3M (N, P, K inorganic fertilizers+30% organic N), (7) 5F:5M (N, P, K inorganic fertilizers+50% organic N), (8) 3F:7M (N, P, K inorganic fertilizers+70% organic N). Fertilization increased SOC content in the plow layers compared to the non-fertilized check treatment. The SOC density in the top 100 cm of soil ranged from 73.12 to 91.36 Mg/ha. The SOC densities of all fertilizer treatments were greater than that of the check. Those treatments that combined inorganic fertilizers and organic amendments had greater SOC densities than those receiving only inorganic fertilizers. The SOC density was closely correlated to the sum of the soil carbon converted from organic amendments and rice residues. Carbon sequestration in paddy soils could be achieved by balanced and combined fertilization. Fertilization combining both inorganic fertilizers and organic amendments is an effective sustainable practice to sequestrate SOC.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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