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有机肥料对土壤碳稳定性和微生物网络的影响的年度变化

Mingkun Ma^1,2, Hao Yang^1,2, Jigang Yang^1,2

¹Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, China.

Frontiers in microbiology

|November 28, 2025

概括

适度的有机肥料通过增强微生物活动和酶功能来提高土壤有机碳 (SOC) 稳定性和作物产量. 然而,过度投入可以降低新回收农田的微生物效率.

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:

土壤有机碳 (SOC) 稳定对于土壤肥力和减缓气候变化至关重要.
在有机化肥下SOC的微生物调节尚未完全理解,特别是在新回收的土地上.

研究的目的:

研究如何有机受精率和组合影响SOC分数,酶活动和微生物群落.
为了阐明微生物和酶途径驱动SOC稳定在新回收的农田.

主要方法:

进行了一项为期两年的实地实验,采用了玉米-油菜轮换系统.
治疗包括传统的,有机的和有机-无机的联合受精.
分析涉及SOC分数,酶活动,微生物群落和结构方程建模.

主要成果:

有机肥料增加了不稳定和稳定的碳池,适度的投入增强了容易氧化碳 (ROC) 和溶解的有机碳 (DOC),更高的投入积累了与矿物相关的有机碳 (MAOC).
酶活性各不相同,因高有机投入而增强的乳酶和受受受精类型影响的纤维化水解酶.
微生物群体显示出蛋白质细菌的丰富,多样性的增加和Actinobacteriota的转变;适度的投入促进了稳定的碳,而过度的投入降低了微生物的效率.

结论:

适度的有机化肥通过促进稳定的碳,氧化酶和微生物多样性来提高作物产量和碳封存.
研究结果揭示了在回收农田中SOC稳定性的微生物和酶机制.
结果为平衡施肥提供了指导,以改善碳储存和作物生产率.

关键词:

不稳定的碳分数.微生物社区结构的微生物社区结构.有机肥有机肥有机肥土壤酶活动土壤酶活动土壤有机碳土壤有机碳稳定的碳池是稳定的碳池.

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