目标作物与环境相结合的有机磷策略,促进粮食生产,减少农业磷损失

IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY
Zheng Li , Shanshan Jiang , Xuanjing Chen , Yubin Zhang , Ning Cao , Xinglin Du , Liyuan Hou , Yi Zhang , Xiaoli Wang , Dayong Guo , Xinping Chen , Lin Ma , Zhenling Cui , Yuesuo Yang
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引用次数: 0

摘要

有机磷资源的循环利用可以减少可持续农业对合成磷肥的依赖。然而,对有机磷肥管理实践对作物产量和环境影响的总体认识不足,限制了有机磷肥策略的进一步优化。在此,我们首先对860多个配对观察结果进行了全球荟萃分析,以验证描绘有机磷肥管理风险区域的潜在指标。然后,结合机器学习工具和全球数据集,进一步确定有机P管理实践的风险区域。最后,综合考虑总磷投入、有机磷来源类型、有机磷比例和有机磷管理风险区,提出了最优有机磷管理策略。结果表明,磷活化系数(PAC)可作为划定有机磷管理危险区的潜在指标。基于假设的通径分析表明,低土壤- pac条件下的磷输入驱动磷优先分配到封闭和中等稳定的磷库中,施用有机磷肥对稳定磷有正向影响,高土壤- pac条件下的磷输入对土壤各磷组分的影响更为平衡,通过有机肥输入的磷主要储存在有机磷库中。目前的有机磷管理做法对低土壤含磷农田的粮食生产没有好处,而且可能增加高土壤含磷农田磷径流的风险。与单独使用合成磷肥相比,最佳有机磷管理与风险区相结合,实现了全球磷径流量减少13.3% %,全球粮食产量增加10.7% %。我们的研究为提高有机磷资源的有效利用,创造更高效、清洁和可持续的粮食生产系统提供了解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Organic phosphorus strategy combining target crops and the environment to advance food production and reduce agricultural phosphorus loss
Recycling organic phosphorus (P) sources may reduce dependence on synthetic P fertilizers in sustainable agriculture. However, the overall lack of understanding of the impact of organic P management practices on crop yields and the environment limits further optimization of organic P strategies. Herein, we first executed a global meta-analysis of over 860 paired observations to validate potential indicators for delineating risk zones for organic P fertilizer management. Then, a combination of machine learning tools and global datasets was used to further identify the risk zones for organic P management practices. Finally, an optimal organic P management strategy was developed considering the total P inputs, types of organic P sources, organic P proportions, and organic P management risk zones. Results indicated that the P activation coefficient (PAC) can be used as a potential indicator for delineating risk zones for organic P management. Hypothesis-oriented path analysis suggests that P inputs under low-soil-PAC conditions drive the preferential allocation of P to the occluded and moderately labile P pools and that organic P fertilizer application can positively affect labile P. P inputs under high-soil-PAC conditions have a more balanced effect on various P fractions of soil, and P inputs through organic fertilizers are primarily stored in the organic P pool. Current organic P management practices do not benefit food production in case of low-soil-PAC cropland and may increase the risk of P runoff in case of high-soil-PAC cropland. A combination of optimal organic P management with risk zones achieved a 13.3 % reduction in global P runoff and a 10.7 % increment in global food production compared with the use of synthetic P fertilizers alone. Our study provides a solution for enhancing the efficient use of organic P resources to create more productive, clean, and sustainable food production systems.
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来源期刊
Agriculture, Ecosystems & Environment
Agriculture, Ecosystems & Environment 环境科学-环境科学
CiteScore
11.70
自引率
9.10%
发文量
392
审稿时长
26 days
期刊介绍: Agriculture, Ecosystems and Environment publishes scientific articles dealing with the interface between agroecosystems and the natural environment, specifically how agriculture influences the environment and how changes in that environment impact agroecosystems. Preference is given to papers from experimental and observational research at the field, system or landscape level, from studies that enhance our understanding of processes using data-based biophysical modelling, and papers that bridge scientific disciplines and integrate knowledge. All papers should be placed in an international or wide comparative context.
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