适应最佳作物产量的应用可以帮助维持全球储量
R W McDowell1,2, P Pletnyakov3, P M Haygarth4
1Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln, New Zealand. richard.mcdowell@agresearch.co.nz.
Nature food
|March 26, 2024
概括
全球 (P) 储量有限. 这项研究表明,优化P肥的应用可以提高作物产量和草原的生产力,同时延长P储备的寿命,确保可持续农业.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 是全球粮食生产的关键营养素.
- 储量的有限性对可持续农业构成了重大挑战.
- 目前的分布可能无法满足作物和草原的最佳生产力需求.
研究的目的:
- 评估全球土壤水平与关键作物和草原的最佳门相比.
- 为了确定达到最佳土壤度所需的应用.
- 评估优化使用对储备寿命的影响.
主要方法:
- 对28种主要作物和改良草原的最佳生产率值进行土壤奥尔森数据的匹配.
- 计算初始资本和年度维护应用率.
- 在当前和优化应用场景下建模储量耗尽.
主要成果:
- 73%的分析土地低于最佳生产值.
- 一个初始的56954 kt应用可以将土壤提升到最佳水平.
- 优化每年28,067公 (17,500公用于耕地) 的应用可以维持这些门,延长储备寿命.
结论:
- 合理的肥管理对于最大限度地提高农业产量至关重要.
- 优化的使用可以显著延长有限储备的寿命.
- 可持续的分配是满足未来粮食需求而不耗尽资源的关键.
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