摘要
对不同类型的烟田土壤中细菌、固氮菌、放线菌及真菌进行分离,对不同微生物种群进行数量和多样性分析。结果表明,不同类型烟田土壤中,黄棕壤中细菌和固氮菌数量均高于紫色土。黄棕壤烟田土壤中细菌、固氮菌、放线菌及真菌变化速率分别高于紫色土中4种微生物变化速率;在黄棕壤烟田土壤中,细菌、固氮菌、放线菌及真菌变化速率呈现递减规律。黄棕壤中4种微生物根土比之和高于紫色土。黄棕壤中细菌与真菌数量的比值(B/F)几乎都高于紫色土。黄棕壤根际土中微生物菌群多样性指数与非根际土中微生物菌群多样性指数之比高于紫色土。
The effect of different soil types on the microbial quantity in tobacco soil was studied.The results showed that the quantity of bacteria and nitrogen-fixing bacteria in yellow-brown soil was higher than that of purple soil.The speed change of bacterial,nitrogen-fixing bacteria,actinomyces and fungus in yellow-brown soil was higher than that of purple soil.In yellow-brown soil,the speed change bacteria,nitrogen-fixing bacteria,actinomyces and fungus were decreased.The ratio of rhizosphere soil to non-rhizosphere soil bacteria,nitrogen-fixing bacteria,actinomyces and fungus in yellow-brown soil was higher than that of purple soil.The ratio of quantity of bacteria and fungus was also higher than that of purple soil.The ratio of microbial diversity index of rhizosphere soil to non-rhizosphere soil in yellow-brown soil was higher than that in purple soil.
出处
《湖北农业科学》
北大核心
2013年第1期56-59,共4页
Hubei Agricultural Sciences
基金
湖北省烟草专卖局重大攻关项目(20070301)
湖北省自然科学基金重点项目(2011CDA079)
关键词
土壤类型
烟田土壤微生物
根土比
多样性指数
soil types
soil microbe of tabacco field
ratio of microbial quantity of rhizosphere soil to non-rhizosphere soil
microbial diversity index
