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Impacts of 22-year organic and inorganic N managements on soil organic C fractions in a maize field, northeast China

Auteur(s) et Affiliation(s)

LOU, Y.
State Key Lab. of Forest and Soil Ecology, Inst. of Applied Ecology, CAS, Shenyang, Chine
Ministry of Agriculture Key Lab. of Crop Nutrition and Fertilization, Inst. of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, Chine
WANG, J.
College of Land and Environment, Agricultural Univ., Shenyang, Chine
LIANG, W.
State Key Lab. of Forest and Soil Ecology, Inst. of Applied Ecology, CAS, Shenyang, Chine


Description :
The fertilizer experimental site used in this study was established on a maize field in Shenyang Agriculture University in 1987. The treatments included, CK : unfertlized control, M : organic manure, N : inorganic N fertilizer and MN : combination of organic manure and inorganic N fertilizer. TOC concentration and C storage were significantly increased under the M and MN treatments, but not under the inorganic N treatment. The M treatment was most effective for sequestrating SOC and showed similar increase in degree of grain yield to the N and MN treatments, therefore it could be the best option for improving soil productivity and C storage in the maize cropping system.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2011, vol. 87, n°. 3, p. 386-390, nombre de pages : 5, Références bibliographiques : 54 ref.

Date :
2011

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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