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Energy and economic analyses of comparative sustainability in low-input and conventional farming systems.

机译：低投入和常规农业系统中比较可持续性的能源和经济分析。

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摘要

The sustainability of two low-input (LIP) cropping systems and one conventional system, all from the Rodale Farming Systems Trial, is compared from 1981 to 1992 using energy and economic indicators. The low-input animal system (LIP-A) spread manure, while the low-input cash grain system (LIP-CG) grew green manure crops for nutrients. The conventional system (CONV) used commercial fertilizers and pesticides.;Results of these analyses show that both LIP systems required only 50% of CONV nonrenewable energy consumption. Food and biomass energy production was highest for LIP-A. Although LIP-CG generated about 75% of CONV food energy production, it was the most stable system from energy and profitability viewpoints. LIP systems were less profitable than CONV under current policy and economic circumstances. The results demonstrate that LIP are more energy sustainable than CONV. Adjustments to social and economic settings are proposed that could make LIP operations as profitable and economically sustainable as CONV.
机译：使用能源和经济指标，对1981年至1992年间Rodale农业系统试验中两种低投入（LIP）种植系统和一种常规系统的可持续性进行了比较。低投入的动物系统（LIP-A）传播肥料，而低投入的经济谷物系统（LIP-CG）种植绿色肥料作物以获取营养。常规系统（CONV）使用商品肥料和农药。这些分析的结果表明，两个LIP系统仅需要CONV不可再生能源消耗的50％。 LIP-A的食品和生物质能产量最高。尽管LIP-CG约占CONV食品能源产量的75％，但从能源和利润角度来看，它是最稳定的系统。在当前政策和经济环境下，LIP系统的利润率不如CONV。结果表明，LIP比CONV更具能源可持续性。提议对社会和经济环境进行调整，以使LIP运营像CONV一样有利可图且在经济上可持续。

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  • 作者

    Chou, Tiang-Hong.;

  • 作者单位

    Michigan State University.;

  • 授予单位 Michigan State University.;
  • 学科 Agriculture General.;Environmental Sciences.;Economics Agricultural.
  • 学位 M.S.
  • 年度 1993
  • 页码 136 p.
  • 总页数 136
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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