不同供钙量对皂质芦荟根际土壤微生物量的影响  

Effects of Calcium Concentrations on the Microbial Biomass in the Rhizosphere Soil of Aloe Saponaria Haw

作　　者：刘宪斌 马思媛 李涛 周玦玎 高娣 LIU Xianbin;MA Siyuan;LI Tao;ZHOU Jueding;GAO Di(School of Chemical Biology and Environment,Yuxi Normal University,Yuxi 653100,China)

机构地区：[1]玉溪师范学院化学生物与环境学院,云南玉溪653100

出　　处：《玉溪师范学院学报》2024年第3期43-56,共14页Journal of Yuxi Normal University

基　　金：国家自然科学基金“基于多源数据融合的牛肝菌产地溯源方法及体系构建研究”(项目编号:32060570);国家自然科学基金“干热河谷稀树灌草丛生态系统土壤碳循环过程对降水格局变化的响应机制研究”(项目编号:42165009);国家自然科学基金“云南热带雨林与稀树灌草丛生态系统土壤呼吸对干旱对立响应的机制研究”(项目编号:41975147);云南省地方本科高校基础研究联合专项资金项目“全球气候变化背景下云南亚热带常绿阔叶林地表植被多样性维持机制研究”(项目编号:202301BA070001-087)。

摘　　要：以皂质芦荟(Aloe saponaria Haw)为研究对象,浇灌不同Ca^(2+)浓度的改良版霍格兰营养液,测定土壤微生物量碳和氮含量,调查和分析不同供钙量对皂质芦荟根际土壤微生物量的影响.研究结果显示,Ca^(2+)浓度为11mmol/L的实验处理中皂质芦荟的叶片、花梗和种子等繁殖器官、根系等生物量均达到最大值.土壤微生物量碳和氮在Ca^(2+)浓度为13mmol/L的实验处理中含量最高.土壤微生物量碳和氮含量分别与皂质芦荟的叶片、繁殖器官、根和总生物量呈弱多项式关系;Ca^(2+)、皂质芦荟、以及两者的交互作用对土壤微生物量碳和氮含量的变化有显著影响;皂质芦荟的叶片、繁殖器官、根和总生物量,土壤活性有机碳含量及其转化率,分别与土壤微生物量碳和氮含量有显著线性相关性.Taking Aloe saponaria Haw as the research subject,this study investigated and analyzed the impact of different calcium supplies on the microbial biomass of the soil around Aloe saponaria by irrigating it with modified Hoagland nutritional solution of different Ca2+concentrations and measuring the carbon and nitrogen content in soil microbial biomass.The results showed that treated with a Ca2+concentration of 11 mmol/L,Aloe saponaria got the maximum biomass in its leaves and reproductive organs like pedicels and seeds,as well as the root system.The highest carbon and nitrogen content was found in soil microbial biomass with a Ca2+concentration of 13 mmol/L.The content of carbon and nitrogen had a weak polynomial relationship with the primary biomass of leaves,reproductive organs,roots and plants of A.saponaria respectively.The concentration of Ca2+,Aloe saponaria,and their interaction had a significant impact on the carbon and nitrogen content.The leaves,reproductive organs,roots,total biomass of Aloe saponaria and the content and transformation rate of active organic carbon had a significant linear correlation with the content of carbon and nitrogen in soil microbial biomass respectively.

关 键 词：皂质芦荟 供钙量 霍格兰营养液 根际土壤 植物生物量 土壤微生物量 

分 类 号：Q948.122.3[生物学—植物学]