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土壤酶,细菌群落和土壤化对预先出现的除草剂pyroxasulfone的反应

Haiyan Yu¹, Xinle Ma², Hailan Cui¹

¹State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.

Ecotoxicology and environmental safety

|October 5, 2024

概括

草药pyroxasulfone通过增加pH值和抑制尿酶活性对土壤产生影响. 虽然在推剂量下影响最小,但较高度显著降低了细菌的数量,并改变了土壤化过程.

科学领域:

土壤科学土壤科学
环境化学环境化学
微生物学微生物学

背景情况:

氧硫是一种用于农业的新型除草剂.
关于其对土壤生态系统的环境影响的数据有限.
了解它对土壤特征和微生物群落的影响至关重要.

研究的目的:

为了评估pyroxasulfone对土壤特性的影响.
评估土壤细菌群落对硫暴露的反应.
为了确定土壤中硫的降解率和半衰期.

主要方法:

用不同度的氧硫处理了土壤样本.
测量了土壤的pH值,酶活动 (尿酶,糖酶) 和细菌的数量.
分析了细菌网络的复杂性和氨氧化基因 (AOA amoA,AOB amoA) 的丰富性.

主要成果:

氧硫的降解率随着度的增加而降低,其半衰期从15.75天到78.08天不等.
土壤pH值升高,尿酶活性被抑制,糖酶活性受到最小的影响.
高剂量减少了细菌的丰富性,而网络复杂性则随度而变化. 化基因的丰度显著减少.

结论:

在推的田间速率下,Pyroxasulfone对土壤酶和细菌群体产生了轻微的影响.
高度的氧硫可以对土壤细菌的丰富性,网络复杂性和化产生不利影响.
需要进一步的研究来了解土壤环境中硫的长期生态风险.

关键词:

16S rRNA Illumina 测序的测序方法细菌社区的细菌社区预先出现的除草剂.氧硫是一种氧硫.土壤酶土壤酶土壤化土壤化

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