Impact of Straw Incorporation on the Physicochemical Profile and Fungal Ecology of Saline–Alkaline Soil
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Published:2024-01-28
Issue:2
Volume:12
Page:277
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ISSN:2076-2607
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Container-title:Microorganisms
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language:en
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Short-container-title:Microorganisms
Author:
Ma Weiming12, Ma Li1ORCID, Jiao Jintang12, Fahim Abbas Muhammad12, Wu Junyan12, Tao Xiaolei12, Lian Yintao12, Li Rong12, Li Yapeng12, Yang Gang12, Liu Lijun12, Pu Yuanyuan12, Sun Wancang12, Wang Wangtian12
Affiliation:
1. State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China 2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
Abstract
Improving the soil structure and fertility of saline–alkali land is a major issue in establishing a sustainable agro-ecosystem. To explore the potential of different straw returning in improving saline–alkaline land, we utilized native saline–alkaline soil (SCK), wheat straw-returned saline–alkaline soil (SXM) and rapeseed straw-returned saline–alkaline soil (SYC) as our research objects. Soil physicochemical properties, fungal community structure and diversity of saline–alkaline soils were investigated in different treatments at 0–10 cm, 10–20 cm and 20–30 cm soil depths. The results showed that SXM and SYC reduced soil pH and total salinity but increased soil organic matter, alkali-hydrolyzable nitrogen, available phosphorus, total potassium, etc., and the enhancement effect of SYC was more significant. The total salinity of the 0–10 cm SCK soil layer was much higher than that of the 10–30 cm soil layers. Fungal diversity and abundance were similar in different soil layers in the same treatment. SXM and SYC soil had higher fungal diversity and abundance than SCK. At the genus level, Plectosphaerella, Mortierella and Ascomycota were the dominant groups of fungal communities in SXM and SYC. The fungal diversity and abundance in SXM and SYC soils were higher than in SCK soils. Correlation network analysis of fungal communities with environmental factors showed that organic matter, alkali-hydrolyzable nitrogen and available phosphorus were the main environmental factors for the structural composition of fungal communities of Mortierella, Typhula, Wickerhamomyces, Trichosporon and Candida. In summary, straw returning to the field played an effective role in improving saline–alkaline land, improving soil fertility, affecting the structure and diversity of the fungal community and changing the interactions between microorganisms.
Funder
Gansu Provincial Science and Technology Programme-Science and Technology Mission Special Project National Natural Science Foundation of China Gansu Provincial Science and Technology Major Special Project Gansu Provincial Modern Cold and Arid Agricultural Science and Technology Support Project Ministry of Finance and Ministry of Agriculture and Rural Development National Modern Agricultural Industrial Technology System
Subject
Virology,Microbiology (medical),Microbiology
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