摘要
以水洗钾长石粉为惟一K源的硅酸盐细菌选择性培养基,对我国部分省市土壤中的硅酸盐细菌的分布状态进行了初步调查.采集了0 ～ 10cm土层下土壤样品48个,测定了土壤pH和养分,从中分离出硅酸盐细菌148株,并对其进行了初步鉴定.研究了硅酸盐细菌在不同生态环境中的分布规律及对含K矿物(钾长石、霞石和伊利石)的分解能力,从中筛选出4株高效菌株,对研究硅酸盐细菌在我国不同土壤生态系中资源的保护、开发和利用,具有重要意义.
Distribution of silicate-dissolving bacteria in some areas of China was investigated with the culture in which feldspar powder was the sole potassium source for bacteria isolation. A total of 48 soils samples collected from surface soil layers, 0 ~ 10cm in depth, of different parts in China were examined for distribution of the bacteria. Then 148 strains of silicate-dissolving bacteria were isolated from the soil samples. Soil pH and soil nutrient contents were determined as well. Rules of the ecological distribution of the bacteria in different habitats and their capabilities to decompose K-bearing minerals were analyzed. Some efficient strains were screened out. The research findings are of great significance in protecting, exploiting and utilizing the ecological resources in China.
出处
《土壤》
CAS
CSCD
北大核心
2004年第1期81-84,共4页
Soils
关键词
硅酸盐细菌
生态分布
钾矿物
Silicate-dissolving bacteria, Ecological distribution, K-bearing minerals.
