全球对化肥的需求是为了在气候变化下提高小麦产量
Pierre Martre1, Sibylle Dueri2, Jose Rafael Guarin3,4,5
1LEPSE, Univ Montpellier, INRAE, Institut Agro Montpellier, Montpellier, France. pierre.martre@inrae.fr.
Nature plants
|July 4, 2024
概括
为了满足全球粮食需求,小麦产量增长是通过改善特征而可能的,但要实现充分的潜力,需要大幅增加肥料,冒着环境影响的风险. 提高使用效率至关重要.
科学领域:
- 农业科学 农业科学
- 适应气候变化 适应气候变化
- 植物育种 植物育种
背景情况:
- 全球粮食需求正在上升,需要在地球范围内增加粮食生产.
- 气候变化给农业生产力和粮食安全带来了重大挑战.
- 小麦是一种主食作物,其生产必须适应这些不断变化的条件.
研究的目的:
- 通过改进的水槽和来源特征来量化潜在的小麦产量增长.
- 根据当前和未来的气候场景评估相关的需求.
- 评估实现最大产量潜力的环境影响.
主要方法:
- 使用了一组小麦模拟模型.
- 结合了来自高产基因型的改进的水槽和源性特征.
- 模拟了主要小麦生产地区当前和本世纪中叶气候变化的情景 (RCP8.5).
主要成果:
- 在两种气候情景下,改善的特征使小麦产量在当前的化肥水平下增加了16%.
- 在高升温情景下实现52%的产量增加需要将肥料使用量增加四倍.
- 增加肥料的使用导致不可避免的更高的环境影响.
结论:
- 增强的水槽和来源特征为小麦提供了显著的产量改善.
- 实现充分的产量潜力需要大幅增加化肥,造成环境风险.
- 提高土壤的可用性和使用效率对于可持续的小麦生产至关重要.
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