玉米生产的环境和社会成本通过解决率建议中的不确定性而降低
Francisco Palmero1, Eric A Davidson2, Kaiyu Guan3,4
1Department of Agronomy, Purdue University, West Lafayette, Indiana, IN, USA. fpalmero@purdue.edu.
Nature communications
|February 4, 2026
概括
减少12-16%的美国玉米带玉米的肥率可以减少环境污染,对作物产量的风险最小. 这种优化提供了显著的经济和生态效益.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 在农业中过度 (N) 施肥会对环境和社会产生不利影响.
- 优化的应用对于可持续的农业实践和减轻污染至关重要.
研究的目的:
- 确定美国玉米带玉米的最佳化肥率.
- 量化减少的应用对环境的好处.
- 评估对农民和社会的经济影响.
主要方法:
- 对的实地试验对玉米谷物产量反应的分析.
- 建模以评估降低率产量损失的风险.
- 计算环境 (N2O-N排放,泄) 和社会效益.
主要成果:
- 在美国玉米带,肥的使用率可以降低1216%,玉米产量损失的风险微不足道.
- 减少的应用使N2O-N排放减少了10%,N漏减少了13%.
- 改善空气和水质的社会效益在2.3亿美元到5.3亿美元之间.
结论:
- 在玉米生产中优化管理提供了可观的环境和经济优势.
- 进一步减少气,虽然对生态系统有益,但对农民来说造成不可接受的收获损失风险.
- 需要激励计划来支持整个食品供应链的可持续管理.
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