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农作物类型转变对土壤形态和微生物功能多样性的影响在典型的黄河灌区

Zijian Xie^1,2, Rongbo Zhao^1,2, Bo Bo^1,2

¹National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

|July 30, 2025

概括

在Hetao灌区的向日田转移会降解土壤,增加泄漏的风险. 这项研究分析了土壤特性和微生物多样性,以了解这些作物类型的影响.

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:

赫塔奥灌区是黄河流域的主要农业区域,面临盐化挑战.
农作物类型的转变影响土壤 (P) 和微生物多样性,影响P损失,但机制尚不清楚.

研究的目的:

为了研究作物类型的变化如何影响土壤的物理化学性质,P分量和酸盐溶解微生物 (PSMs) 在盐化农业地区.
阐明土壤P损失背后的机制,受作物类型转换影响.

主要方法:

从向日 (SF),玉米 (CF),小麦 (WL) 和蔬菜/水果 (VFL) 田中采集了土壤样本.
分析包括土壤的物理化学特性,P分数 (NaOH-Pi,NaOH-Po,HCl-Pi) 和PSM的丰度.
根据奥尔森-P水平评估了土壤P出潜力.

主要成果:

将作物类型转换为SF显著增加了土壤pH值,降低了土壤有机物 (SOM),总 (TN) 和总 (TP).
适度活跃的P分数 (NaOH-Pi,NaOH-Po,HCl-Pi) 主导,其中HCl-Pi是主要成分.
小麦土地 (WL) 的P漏概率最高 (91.7%),而SF的P漏概率最低 (66.7%).
太阳花田 (SF) 呈现出更多的特定PSM (Thiobacillus, Escherichia),可能与NaHCO3-P变化有关.

结论:

转向向日种植加剧了Hetao灌区的土壤退化.
农作物类型显著影响土壤P动态和P漏风险.
了解这些作物-土壤-微生物相互作用对于管理化农业系统中的P损失至关重要.

关键词:

黄河灌区的黄河灌区.改变作物类型,改变作物类型酸盐溶解的微生物的形态学的形态学土壤的土壤

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