长期施肥条件下菜田土壤微生物特征变化  

Effects of long-term fertilization on vegetable field soil microbial characteristics

作　　者：张恩平[1] 高巍[1] 张淑红[1] 李天来[1] 

机构地区：[1]沈阳农业大学园艺学院,沈阳110161

出　　处：《生态学杂志》2009年第7期1288-1291,共4页Chinese Journal of Ecology

基　　金：辽宁省重大科技攻关项目(2006215001);沈阳农业大学中青年硕士生导师基金资助项目(20061130)

摘　　要：对蔬菜地长期施肥土壤的8个主要处理进行了分析,探求不同培肥方式对土壤微生物生态特征的影响。结果表明:有机无机肥配施较单施无机肥可显著增加土壤细菌和放线菌的数量,提高土壤真菌的多样性;有机肥和低浓度氮肥配施处理的土壤细菌数量、真菌群落的多样性和均匀性显著高于其他处理;单施高浓度的氮肥显著降低土壤细菌的数量,真菌群落的多样性和均匀性也明显低于对照。Soil samples were collected from a long-term fertilized vegetable field to study the effects of different fertilization treatments on the ecological characteristics of soil microbes. Comparing with applying inorganic fertilizers alone, a combined application of organic manure and inorganic fertilizers increased the amounts of soil bacteria and actinomycetes significantly, and enhanced the fungal diversity. The amount of soil bacteria and the diversity and evenness of soil fungi were significantly higher in treatment organic manure plus low level nitrogen than in other treatments. Applying high level nitrogen alone decreased the amount of bacteria significantly, and the diversity and evenness of soil fungi were obviously lower than the control.

关 键 词：长期施肥 微生物 多样性 均匀性 

分 类 号：S154.3[农业科学—土壤学]