土壤2012，Vol.44Issue(1)：73-77,5.
不同植物篱对石灰性紫色土坡耕地土壤微生物学特性影响研究
Microbial Features of Sloping Farmland Soil in Calcareous Purple Area Affected by Different Hedgerows Treatments in Sichuan Basin
摘要
Abstract
A fixed field experiment has been established for 10 years in Ziyang, Sichuan Province, and different hedgerows such as Vetiveria zizaniodes hedgerow (VH) and Amorpha fruticosa hedgerow (AH) were used to control the soil and water loss. In this study, we determined soil microbial features affected by the above treatments, the results showed that, compared with the CK, the amount of soil bacteria, actinomycetes and fungi of the VH and AH treatments increased by 63.43% and 36.63%, 47.87% and 71.89%, 74.60% and 43.65% respectively; soil microbial biomass carbon (SMBC) increased by 90.02% and 24.97%; soil microbial biomass nitrogen (SMBN) increased by 83.32% and 45.04%; ammonification activity increased by 73.28% and 75.65%; urase activity and alkaline phosphatase activity increased by 45.20% and 61.86%, 26.68 % and 38.95%; however, nitrosification and nitrification activity decreased by 26.97% and 52.96%, 6.46% and 22.19%, respectively. Thus, hedgerows treatments could improve soil physical and biochemical properties, and increase the microbial quantity, SMBC and SMBN, and reduce the soil nitrogen loss and enhance the utilization efficiency of soil nitrogen and phosphate.关键词
植物篱/坡耕地/微生物特性/土壤酶活Key words
Hedgerow/ Sloping farmland/ Microbial characteristics/ Enzyme activity分类
农业科技引用本文复制引用
王玉川,陈强,林超文,李浩..不同植物篱对石灰性紫色土坡耕地土壤微生物学特性影响研究[J].土壤,2012,44(1):73-77,5.基金项目
国家973计划项目(2006CB100206)和国家支撑计划项目(2007BAD89B15)资助. （2006CB100206）
