灌溉效益分摊系数计算的研究现状与新方法  

Research Situation on Share Coefficient of Irrigation Benefit and New Calculation Methods

作　　者：蔡守华[1] 张展羽[1] 

机构地区：[1]河海大学

出　　处：《节水灌溉》2008年第2期25-27,共3页Water Saving Irrigation

摘　　要：灌溉效益分摊系数在灌溉效益计算中具有重要应用。分析了确定灌溉效益分摊系数的两种常规方法(灌溉试验法和统计法)的局限性,综述了灌溉效益分摊系数的研究进展。在此基础上分别提出了利用作物水分生长函数、利用以施肥量为参数的产量函数、利用水肥耦合产量函数和利用柯布-道格拉斯生产函数计算灌溉效益分摊系数的4种新的方法。这些方法为计算和研究灌溉效益分摊系数拓宽了思路,具有一定的实用价值和理论价值。Share coefficient of irrigation benefit is usually used to determine irrigation benefit. The defects of two traditional methods of calculating the share coefficient of irrigation benefit（Irrigation Experiment Method and Statistical Method） are discussed in this pa per. Based on summarizing the research advancement in this field, several new methods of calculating the share coefficient of irrigation benefit are put forward with crop water production function, fertilizer production function, water and fertilizer coupling produc tion function, and Cobb--Douglas production function. Those methods point out some new directions for the calculation and further research on share coefficient of irrigation benefit, thereby having a certain practical value and theoretical value.

关 键 词：灌区 灌溉效益分摊系数 计算方法 

分 类 号：S274.3[农业科学—农业水土工程]