摘要
通过对能值的投入和产出计算并分析能值评价指标,如净能值产出率、环境负荷率,结果表明近年来雄县的能值产出率有所降低,环境负荷率有所上升。为了促进耕地资源高效利用效率,应科学、合理地施肥,增大农业科技的研究和推广力度,提高农产品的竞争力。
Application of value analysis can be used to study Xiongxian county land.resources utilization efficiency of the system.Through the energy value of the inputs and outputs can be calculated and analysis of indicators such as the evaluation of the value of net energy output,the environmental load rate Xiongxian county results show that the net energy output ratio decreased in recent years,environmental load factor increased development,in order to promote efficient use of land resources efficiently,it should be a scientific and rational land,increasing agricultural technology research and promotion efforts,improving the competitiveness of agricultural products.
出处
《农机化研究》
北大核心
2013年第9期48-53,共6页
Journal of Agricultural Mechanization Research
基金
河北省教育厅青年基金项目(2009451)
关键词
耕地资源
能值分析
净能值产出率
环境负荷率
arable land resources
energy analysis
net energy output ratio
environmental loading ratio
