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肥料应对气候变化:来自中国玉米生产的证据

Quan Quan¹, Fujin Yi², Huilin Liu¹

¹College of Economics and Management, Nanjing Agricultural University, Nanjing, China.

The Science of the total environment

|April 9, 2024

概括

气候变化影响玉米生产. 在28°C以上,玉米肥料的使用急剧增加,特别是在中国. 这凸显了需要适应性肥料管理战略,以确保粮食安全.

科学领域:

农业科学农业科学
气候科学气候科学
环境科学环境科学

背景情况:

玉米是全球重要的粮食作物,受到气候变化的重大影响.
中国在全球化学肥料使用方面处于领先地位,需要有效的管理策略.
了解气候对肥料使用的影响对于发展中国家的粮食安全至关重要.

研究的目的:

分析温度对中国玉米生产中肥料使用的非线性影响.
为气候变化下的有效肥料管理提供经验证据.
为了确定触发肥料应用显著变化的温度值.

主要方法:

利用了1998-2016年中国2297个玉米种植县的面板数据集.
采用统计分析来证明温度和肥料使用之间的关系.
按地区 (黄和夏威夷河谷与北) 和肥料类型 (,,) 进行差异化分析.

主要成果:

肥料使用在28°C以下保持稳定,但在这个值以上急剧增加.
在研究期间,由于温度上升,玉米的平均每公肥料使用量增加了1.5公斤.
黄河河谷的夏季玉米显示,与北方地区相比,对气候变暖的敏感性更高.
化肥,化肥和化肥表现出明显的温度值 (分别为32°C,20°C和20°C),用于显著的使用变化.

结论:

温度显著影响玉米生产中的肥料应用,临界值约为28°C.
适应性肥料管理策略对于在气候变化下保持玉米产量和粮食安全至关重要.
区域差异和特定的营养反应需要针对中国的化肥管理采取量身定制的方法.

关键词:

气候变化气候变化气候变化玉米的玉米玉米的玉米肥料的使用方法温度温度是指温度.

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