能值法计算农业灌溉效益分摊系数  

Based-on Emergy Theory Analysis for the Benefit of Agricultural Irrigation

作　　者：罗乾[1] 魏广平[2] 

机构地区：[1]河海大学水利水电学院,南京210098 [2]海河水利委员会,天津300170

出　　处：《水利科技与经济》2011年第6期61-63,共3页Water Conservancy Science and Technology and Economy

摘　　要：应用能值理论及其统一的衡量标准,将决定灌溉效益分摊系数的主要指标——灌溉用水量与灌溉设施投入转化为同一的量纲,可克服传统方法计算农业灌溉效益分摊系数时,无法衡量自然环境对农作物生产影响的缺陷,定义农业灌溉总能值投入量和生产过程总能值投入量的比值为效益分摊系数,为农业灌溉效益的准确计算提出具体的方法。This article applies energy theory and its uniform criterion and translates the main index determining the sharing coefficient of irrigation benefit——irrigation water capacity and irrigation facility investment to same dimension.It overcomes the defect in traditional method employed to compute agriculture irrigation benefit which is unable to judge the impact of nature environment on crop production.Sharing coefficient of irrigation benefit is defined as the ratio between total irrigation energy input and total productive process energy input.Providing specific methods to improve the accuracy of irrigation benefit.

关 键 词：能值 灌溉效益分摊系数 农作物生产系统 

分 类 号：S27[农业科学—农业水土工程]