[分析重庆市无机肥输入的驱动因素,减少潜力和环境影响]
Tao Liang1, Jing-Kun Zhao2, Hong-Mei Li2
1Chongqing Academy of Agricultural Sciences, Chongqing 401329, China.
Huan jing ke xue= Huanjing kexue
|January 12, 2024
概括
重庆重庆是一座城市.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 农业学是一种农业学.
背景情况:
- 自1997年以来,重庆的作物种植结构发生了重大变化,粮食作物减少,水果和蔬菜大幅增加.
- 肥料的消费主要集中在蔬菜 (37%) 和类 (近55%) 的生产系统,以及大米,玉米和土豆.
研究的目的:
- 量化种植结构变化对重庆肥料使用和环境成本的影响.
- 制定基于科学的战略,减少该地区的化学肥料应用.
主要方法:
- 使用作物肥料配额标准和大规模农民调查数据.
- 采用差异方法和生命周期评估来评估肥料减少潜力和环境效益.
主要成果:
- 在第十四个五年计划期间,重庆的种植业被确定为18.6% (1.69×105) 的潜在肥料减少.
- 蔬菜和类系统的减排潜力最高 (分别为30%和21%),而玉米和大米的减排潜力较低. 报告指出,和在和玉米系统中存在缺陷.
- 根据作物标准优化肥料的应用可以减少高达24.9%的活性损失,16.7%的温室气体排放,23%的环保化潜力.
结论:
- 重庆种植结构的重大变化为减少农业肥料和减少环境影响提供了大量机会.
- 针对性地减少肥料的使用,特别是在蔬菜和果生产中,对于减轻环境成本至关重要.
- 解决特定作物的营养缺乏问题,如玉米和大麻,对于可持续的农业实践和合作降低肥料的努力至关重要.
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