对扩大零预算自然农业的潜在收益挑战
Jo Smith1, Jagadeesh Yeluripati2, Pete Smith1
1School of Biological Science, University of Aberdeen, Aberdeen, UK.
Nature sustainability
|July 15, 2024
概括
零预算自然农业 (ZBNF) 可以减少土壤退化,使印度的低投入农民受益. 然而,有限的营养物质供应,特别是,可能会在高投入系统中危及粮食生产.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 到2050年,印度将面临严重的粮食短缺,需要增加农业生产.
- 高昂的农业成本和价格波动导致农民债务,影响粮食安全.
- 零预算自然农业 (ZBNF) 是许多印度农民采用的低成本农业方法.
研究的目的:
- 评估零预算自然农业 (ZBNF) 对印度作物产量和土壤健康的可持续性和潜在影响.
- 评估ZBNF系统中的营养物质供应,特别是.
- 为国家粮食安全确定与广泛采用ZBNF相关的风险.
主要方法:
- 分析ZBNF系统中的营养循环,重点是土壤微生物和豆类对的固定.
- 与传统肥料应用相比,模拟生物固定的潜在气供应.
- 评估ZBNF下的低投入与高投入农业系统的潜在产量影响.
主要成果:
- ZBNF可能会减少土壤退化,并可能为有限的外部投入的农民提供产量优势.
- 预计最大的生物固定只能提供通常通过肥料应用的52-80%的.
- 在投入较高的农业系统中,由于的可用性有限,预计产量可能会下降.
结论:
- ZBNF在改善土壤健康和支持低投入农业方面表现有前途,但可能无法满足高投入系统的需求.
- 仅仅依赖生物固定可能会限制其他必需营养素的供应.
- 进一步的研究至关重要,以确保大规模采用ZBNF不会损害印度的整体粮食生产能力.
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