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首页> 外文期刊>Spanish Journal of Agricultural Research >Energy inputs-yield relationship and sensitivity analysis of pistachio (Pistacia vera L.) production in Markazi Region of Iran.
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Energy inputs-yield relationship and sensitivity analysis of pistachio (Pistacia vera L.) production in Markazi Region of Iran.

机译：伊朗Markazi地区开心果（Pistacia vera L.）生产的能量投入-产量关系和敏感性分析。

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摘要

Pistachio is considered as an important agricultural commodity in Iran and ranks top amongst all exported agricultural products. Conducting an overall energy audit and economic analysis of pistachio production can provide useful information to help implement management strategies for improving energy efficiency. A study was conducted during 2009 and 2010 to evaluate the overall energy inputs and outputs and to perform an economic analysis of pistachio production in the Iranian province of Markazi. The results revealed that the total energy input for pistachio production was 54305 MJ ha-1. Electricity, followed by diesel fuel and nitrogen fertilizer application were the highest contributors to energy input in pistachio orchards. The contribution of direct energy was higher than indirect energy and share of non-renewable energy was more than renewable energy. Net energy, energy use efficiency, energy productivity and specific energy were 7522 MJ ha-1, 0.86, 0.08 kg MJ-1 and 13.69 MJ kg-1, respectively. Econometric model based on Cobb-Douglas function indicated that impacts of electricity, diesel fuel and chemical fertilizer energy inputs on pistachio yield were positive while the impact of machinery was negative. The marginal physical productivity (MPP) value for diesel fuel was the highest among other variables, followed by energy inputs related to the chemicals and irrigation water. The results revealed that production of pistachios in Markazi Province, under current management practices, are not energy efficient and efforts should be made to improve energy use efficiency.
机译：开心果被认为是伊朗重要的农产品，在所有出口农产品中均排名第一。进行开心果生产的整体能源审计和经济分析可以提供有用的信息，以帮助实施提高能源效率的管理策略。 2009年和2010年进行了一项研究，以评估伊朗的Markazi省开心果生产的总体能源投入和产出，并对经济进行分析。结果表明，开心果生产的总能量输入为54305 MJ ha -1 。电力，其次是柴油和氮肥的施用是开心果园能量输入的最大贡献。直接能源的贡献高于间接能源，不可再生能源的份额大于可再生能源。净能量，能源利用效率，能量生产率和比能分别为7522 MJ ha -1 ，0.86、0.08 kg MJ -1 和13.69 MJ kg -1 < / sup>。基于Cobb-Douglas函数的计量经济学模型表明，电力，柴油燃料和化肥能源输入对开心果产量的影响为正，而机械的影响为负。在其他变量中，柴油的边际生产率（MPP）值最高，其次是与化学药品和灌溉水有关的能量输入。结果表明，在目前的管理实践下，Markazi省开心果的生产效率不高，应努力提高能源利用效率。

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