摘要
江西红壤生态试验站长期定位试验中不同施肥处理红壤水稻土酶活性及微生物群落功能多样性的研究结果表明,不同施肥条件下土壤酶活性及微生物群落功能多样性差异较大,土壤脲酶和脱氢酶活性可以作为土壤肥力的指标。经过20 a施肥管理及水稻种植,土壤酶活性及生物量有很大提高;但是B IOLOGTM生态测试板测定结果显示,施肥使微生物生物群落物种丰富度有所减少,施P土壤酶活性、微生物群落功能多样性均大于未施P土壤,采用秸秆还田处理的群落物种均一性高于未采用秸秆还田处理。
Investigations of soil enzyme activities and microbial community functional diversity were conducted in soil from the fields under a long-term fertilization experiment in the Ecological Experimental Station of Red Soil, Chinese Academy of Sciences. Results show that soil enzyme activities and microbial community functional diversity varied sharply between treatments under different fertilization pattern or rate. Soil urease and dehydrogense activities could be cited as a comprehensive index of soil fertility. After 20 years＇ fertilizer application in the field under a double paddy-rice cropping system, activity and biomass of soil enzymes increased significantly, while microbial community diversity decreased as shown by BIOLOG^TM results. Microbial biomass and community functional diversity were higher in P treatments than in no-P ones. Microbial community uniformity was higher in straw-incorporation treatments than in no-straw ones.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2006年第4期39-44,共6页
Journal of Ecology and Rural Environment
基金
土壤与农业可持续发展国家重点实验室基金(055122)
中国科学院知识创新工程重要方向项目(KZCX3-SW-417)
关键词
红壤
水稻土
施肥
酶活性
微生物群落
功能多样性
生态测试板
red soil
paddy soil
fertilization
enzyme activity
microbial community
function diversity
BIOLOG^TM
