研究不同改性材料对盐碱土理化性质和真菌群落结构的影响,可为盐碱土的合理改良提供理论依据。采用高通量测序技术探讨了5种处理方法的效果,即,控制(CK),脱硫石膏(T1),土壤改良剂(T2),有机肥(T3),脱硫石膏复合土壤改良剂和有机肥(T4),土壤理化性质和真菌群落多样性,composition,河套平原盐碱土结构,内蒙古。结果表明,与CK相比,有效磷的含量,有效钾,有机物,和碱水解氮在改性材料处理中显著增加,T4处理显著降低了土壤pH值。改良处理增加了真菌的Simpson和Shannon指数,但降低了Chao1指数。优势真菌为子囊菌,担子菌,和被孢霉,优势属是被孢霉,Concybe,Botryotrichum,镰刀菌,和假木曲。改性材料的应用增加了子囊的相对丰度,担子菌,镰刀菌,和假曲霉,同时降低了被孢霉的相对丰度,衣原体,和被孢霉.LEfSe分析显示改良的处理改变了真菌群落生物标志物。相关性分析表明,pH和速效钾是影响真菌群落结构的主要环境因子。研究结果可为河套平原盐碱土改良和土壤养分增加提供科学依据。内蒙古。
Studying the effects of different modified materials on the physicochemical properties and fungal community structure of saline-alkali soil can provide theoretical basis for reasonable improvement of saline-alkali soil. High-throughput sequencing technology was used to explore the effects of five treatments, namely, control (CK), desulfurization gypsum (T1), soil ameliorant (T2), organic fertilizer (T3), and desulfurization gypsum compounds soil ameliorant and organic fertilizer (T4), on soil physicochemical properties and fungal community diversity, composition, and structure of saline-alkali soil in Hetao Plain, Inner Mongolia. The results showed that compared with those in CK, the contents of available phosphorus, available potassium, organic matter, and alkali hydrolysis nitrogen were significantly increased in modified material treatments, and the T4 treatment significantly decreased soil pH. Modified treatments increased the Simpson and Shannon indexes of fungi but decreased the Chao1 index. The dominant fungi were Ascomycota, Basidiomycota, and Mortierellomycota, and the dominant genera were Mortierella, Conocybe, Botryotrichum, Fusarium, and Pseudogymnoascus. The application of modified materials increased the relative abundance of Ascomycota, Basidiomycota, Fusarium, and Pseudogymnoascus, while decreasing the relative abundance of Mortierellomycota, Chytridiomycota, and Mortierella. LEfSe analysis showed that modified treatments altered the fungal community biomarkers. Correlation analysis showed that pH and available potassium were the main environmental factors affecting fungal community structure. The results can provide scientific basis for improving saline-alkali soil and increasing soil nutrients in Hetao Plain, Inner Mongolia.