不同农场层次上淡季黄瓜生产农业生态系统能源效率和生态足迹优化研究(以伊朗中部为例)

IF 1 Q3 HORTICULTURE

Horticultural Science Pub Date : 2023-09-29 DOI:10.17221/155/2022-hortsci

Bardia Bayat, Mohammad Hossein Ansari, Marjan Diyanat, Ali Mohammadi ‎Torkashvand

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引用次数: 0

摘要

本研究旨在使用非参数数据包络分析(DEA)来估计伊朗不同农场级别管理系统的淡季黄瓜生产温室的能源效率和温室气体(GHG)排放。通过面对面访谈，对83名黄瓜生产者进行问卷调查。结果表明:小型(0.5 ~ 0.9 ha)、中型(0.9 ~ 2 ha)和大型(≥2 ha)养殖场的能量利用率分别为75.1%、82.6%和86.2%;在所有农场层面，最大的能源使用份额分别属于电力、化肥和人力。DEA结果显示，大型养殖场的技术效率、纯技术效率和规模效率分别为87.3%、92.8%和97.1%，高于其他养殖场管理体制。小型和大型农场的节能率分别为5.62%和2.97%。研究结果还表明，电力、化肥和柴油是温室气体排放的主要来源。通过优化能源使用，在小型和大型温室中，每一公顷淡季黄瓜可减少1 614.5公斤和1 315.0公斤二氧化碳的污染;这表明需要更多地关注管理小型农业生态系统的能源投入，特别是电力投入。

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Optimising energy efficiency and ecological ‎footprint of off-season cucumber production agro-ecosystem upon different farm levels (Case of central Iran)

The present study aimed to use a non-parametric data envelopment analysis (DEA) to estimate the energy efficiency and greenhouse gas (GHG) emissions in off-season cucumber-producing greenhouses in different farm level management systems in Iran. Data were collected using a questionnaire completed by 83 cucumber producers through face-to-face interviews. The results showed that the energy use rate was 75.1%, 82.6%, and 86.2% in small (0.5–0.9 ha), medium (0.9–2 ha), and large farms (≥ 2 ha), respectively. In all the farm levels, the greatest energy use shares belonged to electricity, chemical fertilisers, and human labour, respectively. The results of the DEA revealed that the technical, pure technical, and scale efficiencies of the large farms were 87.3%, 92.8%, and 97.1%, respectively, which were higher compared to other farm level management systems. The ratio of energy savings was estimated at 5.62% and 2.97% for small and large farms, respectively. The results also showed that electricity, chemical fertilisers, and diesel fuel were the most responsible for the GHG emissions. By optimising the energy use, pollution per one/ha one of off-season cucumbers can be mitigated by 1 614.5 and 1 315.0 kg of CO2/ha in small and large greenhouses; indicating more attention is required in managing the energy inputs in small-sized agro-ecosystems, especially for electricity.

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来源期刊

Horticultural Science Horticulture-园艺

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal publishes results of basic and applied research from all areas of horticulture, fruit-growing, vegetable-growing, wine-making and viticulture, floriculture, ornamental gardening, garden and landscape architecture, concerning plants that are grown under the conditions of European temperate zone, or field plants that are considered as horticultural cultures. Original scientific papers, short communications and review articles are published in the journal. Papers are published in English (British spelling).