埃塞俄比亚的玉米正规种子系统:缩小产量差距的意义

K. Kalsa, S. Kolech, M. Worku, Tsedeke Abate, A. Teklewold
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摘要

小农获得和使用改良品种和杂交种的优质种子是埃塞俄比亚玉米可持续生产和缩小产量差距的一个组成部分。正规种子供应系统在确保农民获得优质种子和提高玉米产量方面发挥着关键作用。然而,正规种子系统对提高该国全国玉米平均产量的贡献并没有得到很好的记录。本文具体分析了埃塞俄比亚的正规种子供应系统和改良种子对提高玉米产量的贡献。本文使用了二手资料来源,包括已发表和未发表的数据。从研究到商业种子生产商的种子价值链分析表明,公营和私营玉米杂交种在正规种子系统中占主导地位。改良种子和相关管理方法的使用增加,促进了全国的增产。小农户每增加使用 10,000 公吨玉米改良种子,全国平均玉米产量每公顷就增加 400 公斤(R 平方 = 0.59)。因此,除其他增产技术和推广支持外,确保向农民提供改良种子也可大大有助于缩小全国平均产量与埃塞俄比亚农民已获得的农场示范平均产量之间的差距。建议采取各种政策干预措施,提高玉米种子系统的性能,增加玉米良种的供应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Formal Seed System of Maize in Ethiopia: Implications for Reducing the Yield Gap
Smallholder farmers’ access to and use of quality seeds of improved varieties and hybrids is an integral component of sustainable maize production and the reduction of the yield gap in Ethiopia. Formal seed supply systems play a pivotal role in ensuring farmers’ access to good quality seed and increasing the productivity of maize. However, the contribution of the formal seed system to the increase in the average national maize yield in the country is not well documented. This paper specifically analyzes the formal seed supply systems and contributions of improved seed to maize productivity increase in Ethiopia. Secondary sources of information, including published and unpublished data, were used. Analysis of the seed value chain from research to commercial seed producers indicated that public and private maize hybrids dominate the formal seed system. Increased use of improved seed and associated management practices has contributed to the yield increase at the national level. For every 10,000 MT of additional maize-improved seed used by smallholder farmers, the national average maize yield increased by 400 kg per hectare (R sq. = 0.59). Hence, in addition to other yield-increasing technologies and extension support, ensuring the availability of improved seed to farmers can significantly contribute to reducing the maize yield gap between the national average yield and the average yield from on-farm demonstrations already attained by farmers in Ethiopia. Various policy interventions are suggested to improve the maize seed system performance and increase the supply of maize improved seeds.
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