The impact of collective and individual drip irrigation systems on fertilizer use intensity and land productivity: Evidence from rural Xinjiang, China

IF 2.3 3区经济学 Q2 ECONOMICS

Water Resources and Economics Pub Date : 2022-04-01 DOI:10.1016/j.wre.2022.100196

Changkun Guan , Xianlei Ma , Xiaoping Shi

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引用次数: 7

Abstract

Drip irrigation is claimed to save water and fertilizers and improve land productivity. Considerable recent evidence supports the water-saving effect of drip irrigation techniques, but little attention has been given to the effect on fertilizer savings and land productivity improvement. This study examines the effects of collective and individual drip irrigation (CDI and IDI, respectively) on fertilizer use intensity and land productivity. Using a multinomial endogenous switching treatment regression and a survey dataset collected in Awati County, Xinjiang, we found that (1) on average, CDI reduces fertilizer use intensity by 10.31%, but IDI increases it by 5.57%; and (2) compared to IDI, CDI improves land productivity by more than 13.65%. Moreover, based on quantitative analyses, we found that (3) a high frequency of mutual adjustment of fertigation (an information coordination mechanism) gives CDI these advantages. The policy implications are to continue the top-down promotion of CDI technology and strengthen the information coordination on fertigation during the operation of CDI systems.

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集体和个体滴灌系统对肥料使用强度和土地生产力的影响:来自中国新疆农村的证据

据称，滴灌可以节约用水和肥料，提高土地生产力。最近有相当多的证据支持滴灌技术的节水效果，但很少注意到滴灌技术对节约肥料和提高土地生产力的影响。本研究考察了集体滴灌和个体滴灌(分别为CDI和IDI)对肥料使用强度和土地生产力的影响。通过对新疆阿瓦提县调查数据的多项内源转换处理回归分析发现:(1)CDI平均降低肥料利用强度10.31%，IDI平均提高肥料利用强度5.57%;(2)与IDI相比，CDI提高了13.65%以上的土地生产力。此外，基于定量分析，我们发现(3)高频率的施肥相互调节(一种信息协调机制)使CDI具有这些优势。政策影响是继续自上而下推广CDI技术，并在CDI系统运行期间加强有关施肥的信息协调。

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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来源期刊

Water Resources and Economics Environmental Science-Water Science and Technology

CiteScore

5.00

自引率

0.00%

发文量

审稿时长

51 days

期刊介绍： Water Resources and Economics is one of a series of specialist titles launched by the highly-regarded Water Research. For the purpose of sustainable water resources management, understanding the multiple connections and feedback mechanisms between water resources and the economy is crucial. Water Resources and Economics addresses the financial and economic dimensions associated with water resources use and governance, across different economic sectors like agriculture, energy, industry, shipping, recreation and urban and rural water supply, at local, regional and transboundary scale. Topics of interest include (but are not restricted to) the economics of: Aquatic ecosystem services- Blue economy- Climate change and flood risk management- Climate smart agriculture- Coastal management- Droughts and water scarcity- Environmental flows- Eutrophication- Food, water, energy nexus- Groundwater management- Hydropower generation- Hydrological risks and uncertainties- Marine resources- Nature-based solutions- Resource recovery- River restoration- Storm water harvesting- Transboundary water allocation- Urban water management- Wastewater treatment- Watershed management- Water health risks- Water pollution- Water quality management- Water security- Water stress- Water technology innovation.