摘要
在花棒林内,对不同林龄(5a、10a、20a)、不同深度的根际与非根际微生物的种类、数量进行了研究,结果表明有明显差异:在数量方面细菌占绝对优势(52.92%),放线菌次之(33.33%),真菌最少(13.75%)。在种类方面根际微生物的种类大于非根际。不同深度的土壤微生物数量也存在一定差异;变化为:细菌为0～10cm>20～30cm>10～20cm>30～40cm;真菌为0～10cm>10～20cm>20～30cm>30～40cm;放线菌为0～10cm>30～40cm>10～20cm>20～30cm。随着林龄的增加细菌数量减少;真菌数量呈上升趋势;放线菌表现为5a和10a大致相当,20a最少。
The rhizospheric non-rhizospheric microorganism of Hedysarum scoparium with different ages（5a,10a,20a） and soil depths were researched.The population and the quantity of them demonstrate conspicuous differences.The quantity of bacteria is the most（52.92%） and that of fungi is the least（13.75%）,the quantity of actinomycete is medium（33.33%）.The species of rhizospheric microorganism is more than that of non-rhizospheric microorganism.There is a certain difference on the population and the quantity of soil microorganism with various depths.In sequence of microorganism quantity from high to low,the soil depth about bacteria is 0～10cm,20～30cm,10～20cm,30～40cm,the depth about fungi is 0～10cm,10～20cm,20～30cm,30～40cm,and the depth about actinomycete is 0～10cm,30～40cm,10～20cm,20～30cm.With increasing of Hedysarum scoparium age,the quantity of bacteria decreases while the quantity of fungi grows.The actinomycete of 5a-aged Hedysarum scoparium approximately equal with that of 10a-aged Hedysarum scoparium in quantity,and the actinomycete of 20a-aged Hedysarum scoparium is the least.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2012年第3期164-167,共4页
Journal of Arid Land Resources and Environment
基金
林业公益性行业科技专项(项目编号:200804027-03)资助
关键词
花棒
根际土壤
微生物
Hedysarum scoparium
rhizosphere soil
microbiology
