An analysis of energy use and relation between energy inputs and yield in tangerine production
An analysis of energy use and relation between energy inputs and yield in tangerine production
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DOI：
10.1016/j.rser.2012.04.047
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发表时间：
2012-09
影响因子：
15.9
通讯作者：
Ahmad Mohammadshirazi;A. Akram;S. Rafiee;Seyyed Hashem Mousavi Avval;Elnaz Bagheri Kalhor
中科院分区：
文献类型：
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作者：
Ahmad Mohammadshirazi;A. Akram;S. Rafiee;Seyyed Hashem Mousavi Avval;Elnaz Bagheri Kalhor
本研究的目的是确定伊朗最重要的柑橘生产中心之一的马赞达兰省柑橘生产的投入和产出之间的能量平衡。数据是通过在面对面访谈中进行问卷调查收集的。结果表明，化肥和化学品的施用对能量的利用率最高。平均产量和能耗分别计算为26862.5kgha-1和62260.9MJha-1。能量生产率和净能量值分别为0.43kgMJ− 1和-8201.4MJha −1。能量输出与能量输入的比率约为0.87。此外，柯布-道格拉斯生产函数被用来估计不同形式的能源消费之间的计量关系。研究结果表明，粮食生产者必须优化使用间接和不可再生能源;他们过度使用某些能源投入，对产量产生负面影响，并对自然资源和人类健康造成风险。
The objective of this study is to determine energy balance between inputs and output for tangerine production in Mazandaran province, one of the most important citrus production centers in Iran. Data is collected by administering a questionnaire in face-to-face interviews. The results show that the highest share of energy was utilized by application of chemical fertilizers and chemicals. Average yield and energy consumption are calculated as 26862.5kgha−1and 62260.9MJha−1, respectively. The energy productivity and net energy value are estimated as 0.43kgMJ−1and −8201.4MJha−1, respectively. The ratio of energy outputs to energy inputs is approximately 0.87. In addition, the Cobb–Douglas production function is applied to estimate the econometric relationship among different forms of energy consumption. The findings suggest that tangerine producers must optimize their use of indirect and non-renewable energy resources; they apply an excess use of some energy inputs, resulting in an inverse effect on yield as well as imposing risks to natural resources and human health.