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阿特拉对黑土中的微生物代谢限制的影响:由酶石化测量证据

Tiancong Gao¹, Haixia Tian¹, Ziqi Wang¹

¹College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi, China.

|May 27, 2023

概括

黑土中的阿特拉津农药污染限制了微生物的新陈代谢. 细胞外酶固体测量 (EES) 揭示了限制,突出了EES作为评估农药对土壤微生物影响的工具.

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:

长期使用农业化学品,包括杀虫剂,导致土壤污染,影响黑土壤的生产力和质量.
三亚除草剂阿特拉在黑土中表现出持久的残留物,对土壤的生物化学性质产生负面影响,并限制微生物代谢.
缓解亚特拉污染土壤中的微生物代谢限制对于土壤健康和农业可持续性至关重要.

研究的目的:

为了评估阿特拉辛对微生物营养获取策略的影响,在四种不同的黑色土壤类型中使用细胞外酶胆量计 (EES).
为了确定阿特拉津度和微生物代谢限制之间的关系.
评估EES在评估农药对土壤微生物群落影响方面的有效性.

主要方法:

在土壤中分析了阿特拉津降解动力学,使用第一阶动力学模型分析了从10到100毫克公斤-1.1的度.
细胞外酶固体测量 (EES) 用于评估微生物的C,N和P获取策略,以应对阿特拉污染.
用EES数据的载体分析来确定营养限制 (C,N,P) 并评估微生物代谢反应.

主要成果:

亚特拉辛与EES在C,N和P获取方面有负相关性,在较高度下,矢量长度降低,矢量角度增加 (除了Lishu土壤).
所有测试土壤的载体角度>45°表明,由于阿特拉,土壤微生物的 (P) 受到显著限制.
在不同度的亚特拉下,微生物C和P限制之间观察到强烈的线性关系,特别是在Qiqihar和Nongan土壤中.

结论:

阿特拉津污染显著损害了黑土壤中的微生物代谢限制,是主要的限制营养素.
细胞外酶固体测量 (EES) 已被证实是评估农药如阿特拉对土壤微生物代谢功能的影响的宝贵工具.
了解这些影响对于制定管理和修复受农药污染的土壤战略至关重要.

关键词:

亚特拉辛的残留物亚特拉辛的残留物黑土是黑色的土壤.细胞外酶固化测量细胞外酶固化测量微生物的C和P限制微生物获取营养物质获得微生物营养物质矢量特性矢量特性矢量特性

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