[充满生物炭的氨对土壤碳排放,酶活性和微生物群落的影响]
Ru-Yi Yang1,2, Yan-Hong Dong3, Xin Xiao1,2
1Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
Huan jing ke xue= Huanjing kexue
|June 19, 2024
概括
与化学肥料或与化学肥料相结合的生物炭相比,含有生物炭的氨极大地减少了土壤的二氧化碳排放. 这种新输入方法为减少农业温室气体排放和支持环境目标提供了一个有希望的战略.
科学领域:
- 土壤科学 土壤科学
- 环境科学 环境科学
- 农业化学 农业化学
背景情况:
- 土壤的输入形式极大地影响土壤的二氧化碳排放.
- 化学肥有助于环境污染和农田的非点源污染.
- 生物炭装载的氨为化肥提供了一种新的方法,有可能减轻环境影响.
研究的目的:
- 研究不同输入形式对土壤碳排放,酶活性和微生物群落的影响.
- 为了比较生物炭载氨与传统化学化肥和生物炭修改化学肥料的有效性.
主要方法:
- 室内培养实验进行了四种治疗方法:没有施肥 (CK),化学肥料 (CF),生物炭+化学肥料 (BF) 和生物炭装载的氨 (BN).
- 测量包括累积碳排放,土壤酶活动 (β-葡萄糖酶,过氧化酶,多氧化酶) 和微生物群落结构 (丰富性,多样性,相对丰富性).
主要成果:
- 与生物炭+化学肥料 (BF) 相比,生物炭加载的氨 (BN) 显著减少了35.28%的累积碳排放.
- 与CF和BF相比,BN治疗显著增加了β-葡萄糖酶,过氧化酶和多氧化酶的活性.
- BN减少了微生物群落的丰富性,但改变了关键类的相对丰富性 (例如,减少了蛋白质细菌,增加了Actinobacteria和Bacteroidota),其中化酶活性是关键因素.
结论:
- 生物炭装载的氨是与化学肥结合的生物炭的优质替代品,可显著减少土壤累积碳排放.
- 这种管理战略支持"双碳" (碳峰值和碳中和),零化学肥料增长和循环农业系统的国家目标.
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