| 冯海怡,陈晓炜,谭康铭,等.基于能值分析的华南双季稻种植模式可持续性评价[J].广东农业科学,2019,(6-7):- |
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基于能值分析的华南双季稻种植模式可持续性评价 |
| Emergy-based sustainability analysis of double-rice farming system in the South China |
| 投稿时间：2019-04-17 修订日期：2019-04-17 |
| DOI： |
| 中文关键词: 华南 双季稻 可持续性评价 能值分析 |
| 英文关键词: South China Double-rice farming system Sustainability Emergy analysis |
| 基金项目:广东省自然科学基金博士启动项目（2017A030310055）；国家自然科学基金青年基金项目（31800465） |
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| 中文摘要: |
| 华南双季稻区是我国重要的水稻主产区之一,从生态经济角度判断华南地区当前双季稻种植模式的可持续性,对于我国农业健康稳定发展具有重要意义。本研究以广东省典型双季稻种植系统为研究对象,采用能值分析方法对其可持续发展能力进行定量化评价。结果表明,华南双季稻区农业系统中环境资源的投入占总能值投入44.16%,其中不可辅助能占总能值的52.40%,净能值产出率(EYR)为1.78,环境负荷率(ELR)为1.06,可持续发展指标(ESI)为4.07。能值评价指标体系综合表明,当前华南双季种植模式环境压力较小,可持续性发展潜力较大,但其净能值产出率较低,原因在于过分依赖自然环境资源和人力劳动资源。若能对华南双季稻系统进行标准化管理,适当增加农用机械的投入,并投入有机肥的使用,将能在一定程度上提高该地区水稻种植模式的可持续发展能力。 |
| 英文摘要: |
| Double-cropping rice area in South China is one of the main rice producing areas in China. It is of great significance for the healthy and stable development of agriculture to judge the sustainability of current double-cropping rice cultivation mode in South China from the perspective of eco-economy. In this study, the typical double-cropping rice system in Guangdong Province was taken as the research object, and its sustainable development ability was quantitatively evaluated by using emergy analysis method. The results showed that the input of environmental resources accounted for 44.16% of the total energy input in the agricultural system of double-cropping rice areas in South China. Among them, the non-auxiliary energy accounted for 52.40% of the total energy input, the net emergy output rate (EYR) was 1.78, the environmental load rate (ELR) was 1.06, and the sustainable development index (ESI) was 4.07. The comprehensive evaluation index system of emergy value shows that the current double-season planting mode in South China has less environmental pressure and greater potential for sustainable development, but its net emergy output rate is low because it rELRes too much on natural environmental resources and human and labor resources. If we can standardize the management of double cropping rice system in South China, properly increase the input of agricultural machinery, and put organic fertilizer into use, it will improve the sustainable development ability of rice planting mode in this region to a certain extent. |
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