山东农业大学学报（自然科学版）2017，Vol.48Issue(3)：321-326,6.DOI:10.3969/j.issn.1000-2324.2017.03.001
有机物还田方式对小麦玉米两熟种植系统能值效率的影响
Effects of Organic Matter Returning Methods on Emergy Efficiency of Wheat-Corn Double Cropping
摘要
Abstract
In this study, emergy method was used to analyze the effects of different straw application on the emergy efficiency of wheat-corn double cropping farmland ecosystem. Wheat-corn double cropping fields were used as the research system, the conventional fertilization as the control (CK), three kinds of organic matter returning methods were adopted, including straw crushing and returning to field, biogas slurry returning and organic fertilizer (cow dung) returning to field, emergy analysis was used to compare the emergy yield ration(EYR), emergy investment rate (EIR), environmental load rate (ELR), sustainable development index (ESI) and emergy based product safety index (EIPS). The results showed among the four kinds of organic matter returning methods, EYR of biogas slurry returning was 1.13 times that of conventional fertilization, which was the the highest one. EIR of the organic fertilizer( cow dung) returning system was 24.58 times that of the the control group. ELR of the farmland system with conventional fertilization was 19.5 times that of the organic fertilizer returning system, this way had the greatest pressure on the environment. ESI of straw crushing-returning to field and biogas slurry returning was basically the same, biogas slurry returning had the highest, about 1.43 times that of the conventional fertilization. Organic fertilizer( cow dung)returning system had the highest security with the highest EIPS among the four systems,-0.008. The products of the conventional fertilization system had a certain hidden trouble, in conclusion, under the condition of equal nitrogen content, emergy benefit and sustainable development ability of biogas slurry returning method were superior to the others and worth of spreading.关键词
有机物还田/农田生态系统/土壤肥力/能值Key words
Organic matter returning/field ecosystem/soil fertility/emergy分类
农业科技引用本文复制引用
刘振,华则科,宁堂原,李增嘉..有机物还田方式对小麦玉米两熟种植系统能值效率的影响[J].山东农业大学学报（自然科学版）,2017,48(3):321-326,6.基金项目
"十二五"国家科技支撑项目(2012BAD14B07) （2012BAD14B07）
公益性行业(农业)科研专项经费项目(201503121-05) （农业）
