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Determinants of maize stover utilization as feed, fuel and soil amendment in mixed crop-livestock systems, Ethiopia

机译：埃塞俄比亚混合农作物-牲畜系统中玉米秸秆用作饲料，燃料和土壤改良剂的决定因素

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摘要

Crop residues have several uses in smallholder mixed crop-livestock systems. This paper examines determinants of households' maize stover use as livestock feed, fuel and soil amendment in maize-based systems in Ethiopia. In these systems maize stover is primarily used as feed (56% of biomass) and fuel (31%), with the feed use share negatively associated with maize production potential. We develop a Seemingly Unrelated Regression model to capture the interdependence of crop residue uses. Results show extension training on crop residue retention in the field results in more residue use for soil amendment and less for feed. Farmers with more livestock tend to use more residues for feed and less for soil mulch. Cropping pattern, farm size, agro-ecology and crop residue production also influence crop residue utilization. Conservation agriculture interventions have implications for crop residue use and need to consider access to information, cropping patterns, resources endowments and other socio-economic factors in their development and targeting. (C) 2014 Elsevier Ltd. All rights reserved.
机译：作物残渣在小农作物－畜牧混合系统中有多种用途。本文研究了在埃塞俄比亚以玉米为基础的系统中，家庭使用玉米秸秆作为牲畜饲料，燃料和土壤改良剂的决定因素。在这些系统中，玉米秸秆主要用作饲料（占生物质的56％）和燃料（占31％），而饲料的使用份额与玉米生产潜力负相关。我们开发了一个貌似无关的回归模型来捕获作物残渣用途的相互依赖性。结果表明，对田间作物残渣保留进行扩展培训可导致更多残渣用于土壤改良，而饲料则更少。拥有更多牲畜的农民倾向于使用更多的残留物作为饲料，而减少土壤覆盖物。种植方式，农场规模，农业生态和农作物残渣生产也影响农作物残渣的利用。保护性农业干预措施对作物残渣的使用产生影响，需要在其发展和目标制定过程中考虑获取信息，种植方式，资源end赋和其他社会经济因素。 （C）2014 Elsevier Ltd.保留所有权利。

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