浙江农林大学学报2017，Vol.34Issue(2)：253-260,8.DOI:10.11833/j.issn.2095-0756.2017.02.008
长期不同施肥对北方旱地轮作土壤有机质和作物产量影响的抽样调查
Soil organic matter and crop yield with long-term fertilization schemes for an upland crop rotation in northern China
摘要
Abstract
Soil organic matter (SOM), an important soil quality indicator and a highlighted object of study in soil science, has shown a close relationship to fertilizer applications. Long-term chemical nitrogen (N) fertiliza-tion induced a decrease in soil pH, but the decrease could be overcome by organic fertilization which would mitigate soil acidification, promote SOM accumulation, and increase crop yields. The objective of this study was to show past and present SOM levels as well as relationships between crop yield and SOM. Six fertilization regimes (no fertilizers, chemical nitrogen-phosphorous-potassium (NPK) fertilizers, organic and chemical fertil-izers, chemical fertilizers with returned straw, organic and chemical fertilizers with returned straw, and organic and inorganic compound fertilizers) from a long-term fertilization experiment with a wheat-maize rotation in Fuyang City, Anhui Province were applied and analyzed with a correlation analysis between crop yield and SOM. Results of the correlation analysis demonstrated a significant (P<0.05) and positive correlation (r=0.5984) for the wheat season and a highly significant (P<0.01) and positive correlation (r=0.4437) for the maize season. Thus, a partial replacement of chemical fertilizer by organic manure could improve crop yields and SOM accumulation.关键词
土壤学/长期施肥/旱地轮作/土壤有机质/作物产量Key words
soil science/long-term fertilization/upland crop rotation/soil organic matter/crop yield分类
农业科技引用本文复制引用
黄婷,荀卫兵,张瑞福..长期不同施肥对北方旱地轮作土壤有机质和作物产量影响的抽样调查[J].浙江农林大学学报,2017,34(2):253-260,8.基金项目
江苏省高等教育机构优势学科建设和"111"项目(B12009) （B12009）
