生产更多的谷物,降低环境成本
Xinping Chen1, Zhenling Cui1, Mingsheng Fan2
11] College of Resources &Environmental Sciences, China Agricultural University, Beijing 100193, China [2].
Nature
|September 5, 2014
概括
集成的土壤作物管理可以显著提高米,小麦和玉米的产量,而不需要更多的肥. 这种方法还减少了对环境的影响,确保了中国未来的粮食安全.
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:
- 全球粮食安全受到提高作物产量的必要性而受到威胁,同时尽量减少对环境的破坏.
- 密集型农业在平衡生产率与生态可持续性方面提出了挑战.
研究的目的:
- 评估综合土壤作物系统管理 (ISSM) 实践,以提高产量和降低中国农业的环境成本.
- 评估ISSM在满足中国未来粮食需求方面的潜力.
主要方法:
- 在中国大米,小麦和玉米的主要农业生态区进行了153个场地年实验.
- 基于作物生态生理学和土壤生物地质化学的应用ISSM实践.
- 利用模型模拟和生命周期评估来评估环境影响.
主要成果:
- 大米的平均产量从7.2增加到8.5Mg/ha-1;小麦的产量从7.2增加到8.9Mg/ha-1;玉米的产量从10.5增加到14.2Mg/ha-1.
- 这些产量增加在没有增加肥应用的情况下实现.
- 反应性气损失和温室气体排放被ISSM大大减少.
结论:
- ISSM提供了一种可行的策略,以提高中国的粮食和料安全的作物生产.
- 广泛采用ISSM可以显著减少密集农业对环境的影响.
- 到2030年实现80%的证明产量改善,可以满足中国预计的需求,同时降低环境成本.
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