Study on energy use efficiency for paddy crop using data envelopment analysis (DEA) technique
Study on energy use efficiency for paddy crop using data envelopment analysis (DEA) technique
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DOI：
10.1016/j.apenergy.2008.10.007
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发表时间：
2009-07-01
期刊：
影响因子：
11.2
通讯作者：
Singh, Surendra
中科院分区：
文献类型：
--
作者：
Nassiri, Seyed Mehdi;Singh, Surendra
农户在农作物生产系统中的能量比(产出能/投入能比)和比能(投入能/产能比，以MJ/kg表示)是定义农场效率和效益的指标。技术效率(加权产出能与加权投入能之比)是解释农民效率的另一种方式。本文对旁遮普邦(印度)水稻生产者的数据进行了非参数分析，即数据包络分析(DEA)技术。(使用CCR和BCC模型)计算了农户类别和区域的技术、纯技术和规模效率。结果表明，与稻田规模较大的农户相比，小农户具有较高的能量比和较低的比能需求。能值比2区为10，3区为8.6，与其他区域相比最高，说明这些区域的农民比其他区域的农民更有效率。能比与技术效率在类别上和区域上都有很强的相关性，相关系数分别为0.98和0.99。此外，还观察到水稻作物的作业能投入和源能投入的比能与反向技术效率的相关系数分别为0.97和0.99。虽然技术效率与能值比之间存在较高的相关性，但不同农场类型、不同地域农户的相关系数比较表明，能值比和比能值并不是解释农户各种技术效率、纯技术效率和规模效率的增强指标。(C)2008爱思唯尔有限公司。保留所有权利。
The energy-ratio (output energy to input energy ratio) and specific energy (input energy to yield ratio denoted by MJ/kg) of farmers in crop production systems are indices, which can define the efficiency and performance of farms. Technical efficiency (weighted output energy to weighted input energy ratio) is another way to explain the efficiency of farmers. In this paper non-parametric method i.e. Data Envelopment Analysis (DEA) technique was subjected to data of paddy producers in Punjab state (India). Technical, pure technical and scale efficiencies were calculated (by using CCR and BCC models) for farmers category-wise and zone-wise. Results revealed that small farmers had high energy-ratio and low specific energy requirement as compared to larger ones at paddy farms. Energy-ratio was 10 in zone 2 and 8.6 in zone 3 and was highest as compared to other zones and it depicted that the farmers in these zones had more efficiency than other zones. There was strong correlation between energy-ratio and technical efficiency in both category-wise and zone-wise with correlation coefficient 0.98 and 0.99, respectively. Also it was observed that the correlation coefficient between specific energy and inverse technical efficiency was 0.97 and 0.99, respectively for operation-wise and source-wise energy inputs for paddy crop. Although there was high correlation between technical efficiency and energy-ratio, however comparison between correlation coefficient of farmers in different farm categories and different zones showed that energy-ratio and specific energy are not enhanced indices for explaining of all kinds of the technical, pure technical and scale efficiency of farmers. (C) 2008 Elsevier Ltd. All rights reserved.