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有机肥料对稻田产量和效率有影响吗?来自孟加拉国的实证证据。

Do organic fertilizer impact on yield and efficiency of rice farms? Empirical evidence from Bangladesh.

作者信息

Salam Md Abdus, Sarker Md Nazirul Islam, Sharmin Sajia

机构信息

Department of Agricultural Economics, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh.

School of Political Science and Public Administration, Neijiang Normal University, Neijiang, China.

出版信息

Heliyon. 2021 Aug 8;7(8):e07731. doi: 10.1016/j.heliyon.2021.e07731. eCollection 2021 Aug.

Abstract

Organic fertilizer is one of the critical elements of organic and sustainable agricultural development. This study analyzes the economic impact of organic fertilizer on rice farms' yield and technical efficiency (TE) in Bangladesh. The Stochastic Production Frontier (SPF) approach has been employed by using a sample of 2652 rice plots covering seven broad agro-ecological zones of Bangladesh. It also addresses self-selection into the organic fertilizer choice using propensity score matching (PSM) that corrects observed selection bias that potentially influences both decisions to choose and technical efficiency. After PSM, organic fertilizer users produce 16.67% higher yield by using 12.1%, 9.40%, and 42.1% less labor, other inputs, and farm capital for rice production. The organic fertilizer users are significantly 3.79% more efficient than non-user, suggesting organic fertilizer substantially contributes to enhancing the technical efficiency of rice in Bangladesh. Moreover, the average treatment effect on the treated (ATETs) in different matching is positively significant and confirms the positive impact of organic fertilizer on rice farming. Government and non-government organizations should encourage farmers to extensively use organic fertilizer for better production through soil health development and reduce the pressure of chemical fertilizer import and use.

摘要

有机肥料是有机和可持续农业发展的关键要素之一。本研究分析了有机肥料对孟加拉国水稻农场产量和技术效率(TE)的经济影响。通过使用覆盖孟加拉国七个主要农业生态区的2652个稻田样本,采用了随机生产前沿(SPF)方法。它还使用倾向得分匹配(PSM)解决了有机肥料选择中的自我选择问题,该方法纠正了可能影响选择决策和技术效率的观察到的选择偏差。经过PSM后,有机肥料使用者的产量提高了16.67%,同时用于水稻生产的劳动力、其他投入和农场资本分别减少了12.1%、9.40%和42.1%。有机肥料使用者的效率比非使用者显著高3.79%,这表明有机肥料对提高孟加拉国水稻的技术效率有很大贡献。此外,不同匹配中的处理组平均处理效应(ATETs)呈显著正向,证实了有机肥料对水稻种植的积极影响。政府和非政府组织应鼓励农民通过改善土壤健康来广泛使用有机肥料以实现更好的生产,并减轻化肥进口和使用的压力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0898/8361270/22124e6b05e8/gr1.jpg

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