生物肥料替代减少了土壤N2O和NO排放,提高了使用效率和蔬菜质量指数
Linghui Liu1, Changzhou Wei2, Xintong Xu3
1College of Agriculture, Shihezi University, Shihezi, 832003, China; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
Journal of environmental management
|August 7, 2024
概括
用生物肥料代替化学肥料可以显著减少氧化排放,提高蔬菜质量和使用效率 (NUE). 这种可持续的方法可以提高作物表现,同时减轻密集蔬菜生产对环境的影响.
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:
- 矿物肥有助于N2O和NO排放.
- 有机修改剂和生物肥料为减轻排放和提高作物绩效提供了替代方案.
- 利用效率 (NUE) 和蔬菜质量是可持续农业的关键指标.
研究的目的:
- 评估肥料和生物肥料对N2O和NO排放的影响.
- 评估对使用效率 (NUE) 和蔬菜质量指数 (VQI) 的影响.
- 确定蔬菜生产中矿物肥的最佳替代水平.
主要方法:
- 在三个生长季节的温室试验中,使用了西班牙菜,菜和Baby bok choy.
- 施肥策略包括化学化肥 (CN),肥替代 (M1N4,M1N1) 和生物肥替代 (BM1N4,BM1N1).
- 完全随机设计,使用N2O,NO排放,NUE和VQI测量.
主要成果:
- 肥料降低了N2O (24-45%) 和NO (28-41%) 的排放量;与CN相比,生物肥料进一步降低了它们 (N2O:44-53%,NO:55-63%).
- 生物肥料增加了NUE (0.04-31%) 和产量 (0.05-61%),改善了VQI.
- 50%的生物肥料替代 (BM1N1) 产生了最高的VQI和最低的N-氧化物排放,与改善根生长和降低酸盐含量有关.
结论:
- 用生物肥料取代50%的矿物肥在密集蔬菜生产中有效改善NUE和VQI.
- 生物肥料减轻了氧化排放,提高了蔬菜的质量.
- 使用生物肥料优化施肥策略,支持可持续的农业实践.
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