谷类作物磷肥利用效率的全球分析

IF 9.8 1区经济学 Q1 FOOD SCIENCE & TECHNOLOGY Global Food Security-Agriculture Policy Economics and Environment Pub Date : 2021-06-01 DOI:10.1016/j.gfs.2021.100545

Xing Yu, Claudia Keitel, Feike A. Dijkstra

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引用次数: 32

摘要

由于全球磷肥储量有限，提高磷肥利用率对维持农业生产力和粮食安全至关重要。通过82篇论文中的865个观测值，我们研究了气候(年平均温度)、土壤(pH值、质地、有效磷)和管理因素(作物类型、肥料类型和用量)对谷类作物PFUE的影响。我们发现，在所有观测结果中，施用磷肥后，地上生物量中的磷含量增加了12.4%(95%置信区间为11.5-13.4%)。玉米的PFUE低于水稻和小麦，在ph接近中性的土壤中最低。我们的结果表明，谷类作物的PFUE有很大的改善机会。

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Global analysis of phosphorus fertilizer use efficiency in cereal crops

Due to limits in global phosphate rock reserves for fertilizer use, it is vital to increase phosphorus fertilizer use efficiency (PFUE) to maintain agricultural productivity and food security. With 865 observations from 82 papers we investigated how PFUE in cereal crops was affected by climate (mean annual temperature), soil (pH, texture, available P), and management factors (crop type, fertilizer type and amount). We found that P content in aboveground biomass increased by 12.4% (95% confidence intervals 11.5–13.4%) of the P fertilizer applied across all observations. This PFUE was lower in maize than in rice and wheat, and was lowest in soil with near neutral pH. Our results indicate that there is much opportunity for improving PFUE in cereal crops.

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来源期刊

Global Food Security-Agriculture Policy Economics and Environment FOOD SCIENCE & TECHNOLOGY-

CiteScore

20.90

自引率

3.40%

发文量

期刊介绍： Global Food Security plays a vital role in addressing food security challenges from local to global levels. To secure food systems, it emphasizes multifaceted actions considering technological, biophysical, institutional, economic, social, and political factors. The goal is to foster food systems that meet nutritional needs, preserve the environment, support livelihoods, tackle climate change, and diminish inequalities. This journal serves as a platform for researchers, policymakers, and practitioners to access and engage with recent, diverse research and perspectives on achieving sustainable food security globally. It aspires to be an internationally recognized resource presenting cutting-edge insights in an accessible manner to a broad audience.