LIU Zhen,GUO Xuerui,CAO Huaning,et al.Effects of Straw and Microplastics Addition on Soil Fungal Community in Coastal Saline-alkali Area[J].Northern Horticulture,2026,(3):102-110.[doi:10.11937/bfyy.20252429]
秸秆和微塑料添加对滨海盐碱区蔬菜及土壤真菌群落的影响
- Title:
- Effects of Straw and Microplastics Addition on Soil Fungal Community in Coastal Saline-alkali Area
- 文章编号:
- 1001-0009(2026)03-0102-09
- Keywords:
- microplastics; straw; microbial community; high-throughput sequencing
- 分类号:
- S154.3
- 文献标志码:
- A
- 摘要:
- 以“中甘21”甘蓝为试材,设置对照、微塑料(MPS)以及秸秆与微塑料混合施加(SMPS)7个处理,采用Illumina高通量测序对ITS1区进行高通量测序以及FunGuild功能预测,研究微塑料、秸秆施用对土壤真菌微生物群落的影响,以期为滨海盐碱区微塑料污染生态研究提供参考依据。结果表明:MPS2处理(微塑料浓度0.5%)观测到的物种数量、Chaol指数增加,SMPS2处理土壤优势菌门子囊菌门相对丰度提升显著,微生物功能病理营养型相对丰度显著降低。与对照相比,添加微塑料土壤中真菌群落的Shannon指数、Simpson指数均有所降低,Chao1指数在添加微塑料0.5%浓度时有增加趋势,添加微塑料一定程度上影响土壤α多样性。添加秸秆后以上指数均有降低趋势。在土壤中无论是否添加微塑料与以及微塑料与秸秆混施在土壤群落结构方面,真菌群落优势门均为子囊菌门,随着微塑料浓度的增加子囊菌门的相对丰度有增加趋势,加入秸秆后子囊菌门相对丰度显著增加,其中SMPS2子囊菌门相对丰度达94%以上。秸秆的添加为微生物提供了土壤通气、营养物质等环境条件,导致土壤微生物优势属发生变化,腐生营养型微生物相对丰度增加,病理营养型相对丰度减少。
- Abstract:
- Taking ‘Zhonggan 21’ cabbage as the test material,seven treatments including control,microplastics (MPS),and mixed application of straw and microplastics (SMPS) were set up.Illumina high-throughput sequencing was used to perform high-throughput sequencing of ITS1 region and FunGuild functional prediction to study the effects of microplastics and straw application on soil fungal microbial communities,in order to provide reference for ecological research on microplastic pollution in coastal saline alkali areas.The results showed that the number of species and Chaol index observed in MPS2 treatment (microplastic concentration 5%) increased,the relative abundance of soil dominant phylum Ascomycota in SMPS2 treatment increased significantly,and the relative abundance of microbial functional pathological nutrition type decreased significantly.Compared with the control,the Shannon index and Simpson index of the fungal community in the soil added with microplastics decreased,and the Chao1 index increased when the microplastics concentration was 5%.The addition of microplastics affected the alpha diversity of the soil to a certain extent.After adding straw,the above indexes showed a decreasing trend.In terms of soil community structure,the dominant phylum of fungal community was Ascomycota regardless of whether microplastics were added to the soil or not and whether microplastics were mixed with straw.The relative abundance of Ascomycota increased with the increase of microplastics concentration.The relative abundance of Ascomycota increased significantly after the addition of straw.The relative abundance of SMPS2 Ascomycota was more than 94%.The addition of straw provided soil aeration,nutrients and other environmental conditions for microorganisms,resulting in changes in the dominant genera of soil microorganisms.The relative abundance of saprophytic microorganisms increased and the relative abundance of pathological nutrients decreased.
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备注/Memo
第一作者简介:刘震(1985-),男,硕士,副研究员,现主要从事作物栽培与施肥等研究工作。E-mail:liuzhen84575151@163.com.基金项目:沧州市自然科学基金资助项目(221001001D);河北省中央引导地方科技发展资金资助项目(246Z6402G)。收稿日期:2025-07-03