鲫鱼池塘混养技术效率与要素产出弹性实证研究——基于二次生产函数的随机射线前沿模型

被引:1
作者
尹小玲 [1 ,2 ]
周宏 [2 ]
李竹宇 [1 ]
机构
[1] 盐城工学院
[2] 南京农业大学
关键词
混养; 射线生产函数; 随机前沿分析; 技术效率; 产出弹性;
D O I
暂无
中图分类号
F326.4 [渔业、水产业]; F224 [经济数学方法];
学科分类号
0701 ; 070104 ;
摘要
在标准化池塘改造、池塘养殖方式转变背景下,利用多产出射线生产函数的随机前沿分析方法,测量江苏盐城地区160个鲫鱼池塘混养养殖户的技术效率及生产弹性。研究结果表明:鲫鱼混养存在明显的技术效率损失,随机射线前沿生产函数的误差主要是由技术非效率引起;鲫鱼混养的技术效率与池塘面积呈现显著的正相关关系,表明标准化池塘改造项目对水产养殖技术效率的提高起了积极的促进作用;从要素投入-产出弹性来看,池塘面积投入的产出弹性最大,其次为中间资金投入和劳动力投入;总体上,盐城地区鲫鱼池塘混养仍处于规模报酬递增阶段。
引用
收藏
页码:58 / 61+9 +9
页数:5
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