Zhao Jiao, Xie Hui-Jun, Zhang Jian
School of Environmental Science and Engineering, Shandong University, Qingdao 266200, China.
Environment Research Institute, Shandong University, Qingdao 266200, China.
Huan Jing Ke Xue. 2020 Mar 8;41(3):1449-1455. doi: 10.13227/j.hjkx.201908044.
Soil salinity and alkalinity are major problems that limit agricultural development across the world. The planting of halophytes and salt-tolerant plants could improve saline-alkaline soil character, while the microorganisms in saline-alkali soils play an important role in the growth of halophytes and salt-tolerant plants. In this study, four representative plants of maize, cotton, (Cav.) Trin. ex Steud, and were selected in saline-alkali soil. Soil samples were collected to explore the relationship between the main bacterial communities of roots and non-roots and the physical and chemical properties and soil microbial diversity of saline-alkali soil. The results showed that the root microorganisms of affect the pH of the soil to some extent, and the soil salinity is negatively correlated with the soil nutrient content. The top five bacterial gates with higher relative abundance in all soil samples were -Proteobacteria, Actinobacteria, Bacteroides, Chloroflexi, and Acidobacteria. Cotton, (Cav.) Trin. ex Steud, and have large differences in salt-tolerant bacteria between root soils and non-root soils. High-throughput sequencing results show that salt tolerance is different between the three plant roots and non-root soils. Bacterial genus, such as and , differ greatly in cotton soil, and differ greatly in (Cav.) Trin. ex Steud. soil, and differ greatly in the soil of . This research can provide a theoretical basis for promoting plant growth in saline-alkali soil.
土壤盐碱化是限制全球农业发展的主要问题。种植盐生植物和耐盐植物可以改善盐碱土性状，而盐碱土中的微生物在盐生植物和耐盐植物的生长中发挥着重要作用。在本研究中，在盐碱土中选择了玉米、棉花、（卡瓦）特里恩斯·埃克斯·施图德以及（此处原文缺失一种植物名称）这四种代表性植物。采集土壤样本以探究根际和非根际主要细菌群落与盐碱土理化性质及土壤微生物多样性之间的关系。结果表明，（此处原文缺失一种植物名称）的根系微生物在一定程度上影响土壤pH值，且土壤盐分与土壤养分含量呈负相关。所有土壤样本中相对丰度较高的前五大细菌门类为变形菌门、放线菌门、拟杆菌门、绿弯菌门和酸杆菌门。棉花、（卡瓦）特里恩斯·埃克斯·施图德以及（此处原文缺失一种植物名称）的根际土壤和非根际土壤在耐盐细菌方面存在较大差异。高通量测序结果表明，三种植物的根际和非根际土壤在耐盐性方面存在差异。细菌属，如（此处原文缺失细菌属名称）在棉花土壤中差异很大，（此处原文缺失细菌属名称）在（卡瓦）特里恩斯·埃克斯·施图德土壤中差异很大，（此处原文缺失细菌属名称）在（此处原文缺失一种植物名称）土壤中差异很大。本研究可为促进盐碱土中植物生长提供理论依据。
