在小麦-玉米系统中输入有机材料后,作物生产和温室气体排放之间的权衡
Lin Chen1, Hailun Du2, Qing Liu3
1College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China.
Journal of environmental management
|April 15, 2025
概括
回收农业有机废物,如猪便,可以提高作物产量,并带来经济效益. 虽然增加了温室气体排放,但在考虑产量,成本和环境影响时,猪仍然是可持续农业的最佳选择.
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:
- 回收农业有机废物对于提高作物产量和环境保护至关重要.
- 需要对有机修改对作物生产率和温室气体 (GHG) 排放的影响进行全面评估.
研究的目的:
- 调查草,猪和生物气残留物对小麦-玉米系统作物产量和温室气体排放的影响.
- 评估有机修改对收益,农业成本和环境效益的协同效应.
主要方法:
- 从2019年到2022年在中国北方平原进行的实地实验.
- 草,猪,生物气残留物和化学肥处理方法的比较.
- 对作物产量,温室气体排放量和协同效应指数的分析.
主要成果:
- 猪便显著提高了作物产量和稳定性 (5.82%),而草降低了产量.
- 有机修订刺激了温室气体排放,猪便造成了最高的增加 (39.87%).
- 猪便显示出产量,成本和温室气体效益的最高协同效应指数.
结论:
- 采用猪是一种最佳的施加策略,可以平衡高产益与可管理的温室气体和农业成本.
- 虽然有机修改增加了土壤的温室气体排放,但猪便提供了最好的综合优势.
- 可持续的农业实践需要仔细考虑有机修订的多方面的影响.
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