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南亚平衡养分管理创新的发展:来自孟加拉国、印度、尼泊尔和斯里兰卡的观点

Development of balanced nutrient management innovations in South Asia: Perspectives from Bangladesh, India, Nepal, and Sri Lanka.

作者信息

Kishore Avinash, Alvi Muzna, Krupnik Timothy J

机构信息

International Food Policy Research Institute (IFPRI), NAS Complex, New Delhi, 110008, India.

International Maize and Wheat Improvement Center (CIMMYT), Sustainable Intensification Program, Dhaka, 1213, Bangladesh.

出版信息

Glob Food Sec. 2021 Mar;28:100464. doi: 10.1016/j.gfs.2020.100464.

Abstract

Imbalanced application of fertilizers is a major fiscal and environmental problem in South Asia. We review fertilizer policies and extension efforts to promote the balanced application of nutrients in Bangladesh, India, Nepal, and Sri Lanka and draw 4 important lessons. (1) Fertilizer sector reforms need to be fiscally sustainable and politically feasible. Governments in South Asia have abolished fertilizer subsidies on multiple occasions, only to restore them a few years later. (2) The use of phosphate and potash did not decline much even after a sharp increase in their prices in India in 2011-12. Therefore, rationalizing subsidies, while necessary, may not be sufficient to ensure balanced use of fertilizers. Changing farmers' practice requires combining the right incentives with the right information. (3) Soil test based soil health cards (SHC) hold promise, but there is limited evidence on their utility. India's SHC program had very little impact on fertilizer use. (4) Direct cash transfer (DCT) of fertilizer subsidies can reduce distortions, but Sri Lanka's experience shows that implementing it is more challenging than universal subsidies. DCT requires the removal of price controls, integration of land records, farmer identity cards, a cash transfer system with universal coverage, and a competitive fertilizer retail sector.

摘要

化肥施用不均衡是南亚地区一个主要的财政和环境问题。我们回顾了孟加拉国、印度、尼泊尔和斯里兰卡为促进养分均衡施用所采取的肥料政策及推广措施,并总结出四点重要经验教训。(1)肥料行业改革需要在财政上具有可持续性且在政治上具有可行性。南亚各国政府曾多次取消肥料补贴,但几年后又予以恢复。(2)即便2011 - 2012年印度磷钾肥价格大幅上涨,其使用量也并未显著下降。因此,尽管合理化补贴很有必要,但可能不足以确保肥料的均衡使用。改变农民的做法需要将正确的激励措施与正确的信息相结合。(3)基于土壤测试的土壤健康卡(SHC)前景可期,但关于其效用的证据有限。印度的土壤健康卡计划对肥料使用的影响甚微。(4)肥料补贴的直接现金转移支付(DCT)可以减少扭曲现象,但斯里兰卡的经验表明,实施该措施比普遍补贴更具挑战性。直接现金转移支付要求取消价格管制、整合土地记录、农民身份证、具有普遍覆盖范围的现金转移支付系统以及具有竞争力的肥料零售行业。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b3f9/7937784/80c690af9c63/gr1.jpg

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