土壤与作物Issue(4)：150-156,7.DOI:10.11689/j.issn.2095-2961.2013.04.002
长期施肥对辽西褐土区土壤有机碳含量和玉米产量的影响
Soil Organic Carbon Content and Maize Yield Affected by Long-term Fertilization in Cinnamon Soil Region of Liaoning Province
摘要
Abstract
We investigated soil organic matter (SOM) content,grain yield of maize and sustainability yield index (SYI) and their rela-tionship in Fuxin and Lingyuan sites of Liaoning province.The treatments included no fertilizer control (CK),nitrogen fertilizer(N),N and phosphorus fertilizers(NP),manure(M),manure and N fertilizer(MN),and manure combined with N and P fertilizers(MNP).Re-sults indicated that SOM content was significantly increased by 5.2 g· kg -1 ~11.1 g· kg-1 under the organic treatments ( M, MN, MNP), compared with the other inorganic treatments (CK, N, NP) .The highest maize yield (6 757 kg· hm-2 for Fuxin site and 10 467 kg· hm-2 for Lingyuan site ) was observed under the MNP treatment and the lowest one was observed under the CK treatment at the both sites.SYI values were 0.50 and 0.54 under the MN and MNP treatments respectively , both significantly higher than the other treatments.This indicated that organic manure application can enhance sustainability of maize yield .SYI was significantly correlated with SOM content ( R2 =0.74 ) under manure application , indicating that the increase in SYI induced by manure application was at-tributed to the SOM increase.关键词
长期施肥/产量可持续性/土壤有机碳/土壤肥力Key words
long-term fertilization/yield sustainability/soil organic carbon/soil fertility分类
农业科技引用本文复制引用
李忠芳,唐政,李继光,娄翼来,董旭..长期施肥对辽西褐土区土壤有机碳含量和玉米产量的影响[J].土壤与作物,2013,(4):150-156,7.基金项目
国家自然科学基金 （）
