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中国农学通报 ›› 2022, Vol. 38 ›› Issue (34): 82-90.doi: 10.11924/j.issn.1000-6850.casb2021-1189

所属专题: 生物技术 农业生态

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

生物菌剂撒施对宁夏石嘴山盐碱地微生物群落结构的影响

沙月霞(), 黄泽阳, 魏照清   

  1. 宁夏农林科学院植物保护研究所,银川 750011
  • 收稿日期:2021-12-09 修回日期:2022-05-13 出版日期:2022-12-05 发布日期:2022-11-25
  • 作者简介:沙月霞,女,1974年出生,宁夏平罗人,副研究员,博士,研究方向:植物病害生物防治及微生态学。通信地址:750011 宁夏银川市金凤区黄河东路590号,Tel:0951-6882352,E-mail:yuexiasha@126.com
  • 基金资助:
    宁夏农林科学院全产业链创新示范项目“宁夏耕地可持续利用与农田生产力提升技术研究与示范”(QCYL-2018-09);国家重点研发计划“土壤处理对微生物的影响”(2017YFD0201606)

Impact of Microbial Agent Broadcast Application on Microbial Community Structure of Saline-alkali Soil in Shizuishan of Ningxia

SHA Yuexia(), HUANG Zeyang, WEI Zhaoqing   

  1. Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750011
  • Received:2021-12-09 Revised:2022-05-13 Online:2022-12-05 Published:2022-11-25

摘要:

盐碱地是具有较高价值的后备耕地资源,土壤微生物群落可以作为衡量土壤质量的生物学评价指标之一。采用Illumina MiSeq技术测试样本的ITS和16S rRNA序列,剖析2种菌剂撒施处理对宁夏石嘴山地区盐碱土壤微生态环境的调控作用。研究表明,菌剂YF和JF撒施可以降低盐碱地pH,改良土壤营养状况;真菌和细菌群落的丰富度、多样性和均匀度显著增加;真菌的镰孢属(Fusarium)及曲霉属(Aspergillus)丰度下降达40%以上,细菌的节细菌属(Arthrobacter)、多食鞘氨醇杆菌属(Sphingomonas)和类诺卡氏属(Nocardioides)的丰度增加8.0%以上。微生物菌剂撒施降低了盐碱地真菌和细菌群落的独有分类单元OTU (operational taxonomic units)数量,硝态氮、有机质、K、C、N、P、pH等环境因子对不同处理之间的微生物群落也有显著影响。因此,2种微生物菌剂撒施处理可以改善宁夏石嘴山地区盐碱土壤质量,改善土壤的微生态环境。

关键词: 微生物菌剂, 撒施, 宁夏石嘴山, 盐碱地, 微生物群落结构

Abstract:

Saline-alkali soil is a reserved cultivated land resource with high value. The soil microbial community can be used as one of the biological evaluation indicators to measure the soil quality. Illumina MiSeq technology was used to detect the ITS and 16S rRNA sequence of the samples. The regulating effects of two microbial agents on the micro-ecological environment of saline-alkali soil in Shizuishan of Ningxia were analyzed. The results showed that the broadcast application of microbial agent YF and JF could reduce the pH of saline-alkali soil and improve the nutrient status. In addition, the richness index, diversity index and evenness index of fungal and bacterial communities increased significantly. The relative abundances of Fusarium and Aspergillus in fungal community were reduced by more than 40%. The relative abundances of Arthrobacter, Sphingomonas and Nocardioides in bacterial community were increased above 8.0%. The broadcast application of microbial agents reduced the operational taxonomic units (OTU) number of soil fungal and bacterial communities compared to the empty control. The environmental factors, including soil nitrate nitrogen, organic matter, K, C, N, P and pH, had significant effect on microbial community of saline-alkali soil. Therefore, the broadcast application of the two microbial agents can improve the saline-alkali soil quality as well as the soil micro-ecological environment in Shizuishan of Ningxia.

Key words: microbial agent, broadcast application, Shizuishan in Ningxia, saline-alkali soil, microbial community structure

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