Change and Diversity in Smallholder Rice-Fish Systems: Recent Evidence from Bangladesh

M. Dey, D. Spielman, Haque A.B.M. Mahfuzul, M. S. Rahman, R. Valmonte-Santos
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引用次数: 36

Abstract

Efforts to unlock the genetic potential of both rice and fish, when combined with efforts to improve the management of rice–fish systems, have considerable proven potential for increasing agricultural productivity and food security. In Bangladesh, estimates suggest that the country’s potential rice–fish production system encompasses between two and three million hectares of land. Despite three decades of research on biophysical and technical aspects of rice–fish systems, this potential has not been realized fully due to insufficient attention given to the social, economic, and policy dimensions of system improvement. This paper provides a characterization of the diverse and changing nature of rice–fish systems in Bangladesh by combining data from a novel upazilla-level (sub-district-level) survey of fishery officers with household surveys, focus group discussions, and a meta-review of the literature on aquaculture in the country. The resulting analysis sheds new light on the economic viability of different rice–fish systems and recommends policy and investment options to further improve the development and delivery of rice–fish technologies. Findings indicate that in addition to concurrent rice–fish systems, alternating rice–fish systems and collectively managed systems offer considerable potential for increasing productivity and farm incomes in Bangladesh. Findings also suggest that although the emergent innovation system around these rice–fish systems is fairly dynamic, there is a need for more supportive policies and investments—and analysis of the intended and unintended impacts of these policies and investments.
小农稻鱼系统的变化和多样性:来自孟加拉国的最新证据
开发水稻和鱼类遗传潜力的努力,与改进水稻-鱼类系统管理的努力相结合,在提高农业生产力和粮食安全方面具有巨大的潜力。在孟加拉国,估计表明该国潜在的稻米- -鱼类生产系统包括200万至300万公顷的土地。尽管对稻-鱼系统的生物物理和技术方面进行了三十年的研究,但由于对系统改进的社会、经济和政策方面的重视不够,这种潜力尚未充分实现。本文通过结合对孟加拉国渔业官员进行的一项新的分区级调查、住户调查、焦点小组讨论和对该国水产养殖文献的元综述所得数据,描述了孟加拉国水稻- -鱼类系统的多样性和不断变化的性质。由此产生的分析揭示了不同稻- -鱼系统的经济可行性,并为进一步改进稻- -鱼技术的开发和交付提出了政策和投资选择建议。研究结果表明,除了水稻- -鱼并行系统外,水稻- -鱼交替系统和集体管理系统为提高孟加拉国的生产力和农业收入提供了相当大的潜力。研究结果还表明,尽管围绕这些水稻-鱼类系统的新兴创新系统是相当动态的,但仍需要更多的支持性政策和投资-以及对这些政策和投资的预期和非预期影响的分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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