| 不同利用方式对东北羊草草地土壤微生物数量的影响 |
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| 引用本文： | 朱瑞芬,唐凤兰,张月学,刘杰琳,刘凤岐,陈积山.不同利用方式对东北羊草草地土壤微生物数量的影响[J].草地学报,2012,20(5):842-847. |
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| 作者姓名： | 朱瑞芬 唐凤兰 张月学 刘杰琳 刘凤岐 陈积山 |
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| 作者单位： | 黑龙江省农科院草业研究所, 黑龙江 哈尔滨 150086 |
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| 基金项目： | 农业科技成果转化资金项目(2011GB2B200005);黑龙江省农业科技创新工程种子创新基金项目(2010-10);国家国际科技合作项目(2011DFR30840-11)资助 |
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| 摘 要： | 不同利用方式下(刈割和放牧),比较了羊草(Leymus chinensis)草地土壤微生物多样性(真菌、细菌和放线菌)及群落结构的数量变化。结果表明:土壤微生物的数量在不同利用方式下表现为:刈割草地>放牧草地,在不同植物群落中表现为:羊草群落>杂类草群落>碱茅(Puccinellia distans)群落。无论在刈割还是放牧区,真菌的分布为:羊草群落>杂类草群落>碱茅群落;细菌的分布为:杂类草群落>羊草群落>碱茅群落;放线菌为:羊草群落>杂类草群落>碱茅群落。土壤微生物随土层垂直递减分布,在土层0~15 cm土壤微生物分布最多。3类微生物中,细菌数量最大, 放线菌次之, 真菌最小。相关性分析表明,只在刈割方式下羊草群落(sp1)和碱茅群落(sp2)土壤的微生物数量与地上生物量显著相关(P<0.05),其余相关性均不显著。
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| 关 键 词： | 羊草草地 刈割和放牧 微生物数量 生物量 |
| 收稿时间： | 2012-04-11 |
Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China |
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| ZHU Rui-fen
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TANG Feng-lan
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ZHANG Yue-xue
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LIU Jie-lin
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LIU Feng-qi
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CHEN Ji-shan.Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China[J].Acta Agrestia Sinica,2012,20(5):842-847. |
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| Authors: | ZHU Rui-fen TANG Feng-lan ZHANG Yue-xue LIU Jie-lin LIU Feng-qi CHEN Ji-shan |
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| Institution: | Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Science, Harbin, Heilongjiang Province 150086, China |
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| Abstract: | Leymus chinensis from steppes of northeast China was selected to investigate contents of soil microbial Population (fungi, bacteria and actinomycetes) under different use patterns. Results are as follows: soil microbial population in fenced grassland is higher than outside fenced. The number of soil microbial population is ordered as fenced mowing grassland >grazing grassland. In three communities (sp1, sp2 and sp3), the number of soil microbial population is ordered as sp1>sp3>sp2. In mowing grassland or grazing grassland,the number and distribution of soil microorganisms (fungi, bacteria and actinomycetes) are different among three plant communities.The number of fungi is order as sp1>sp3>sp2; the number of bacteria is ordered as sp3>sp1>sp2; the number of actinomycete is ordered as sp1>sp3>sp2. The number of soil microorganisms greatly varies with soil depth so that the number is much higher within 0~15 cm than that within 15~30 cm (2~4 times). Among microorganisms, the number of bacteria is the highest and the number of fungi is the lowest. There is a closely correlation between sp1, sp2 aboveground biomass, and the number of fungi in mowing grassland, but this phenomenon is not observed in grazing grassland. |
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| Keywords: | Leymus chinensis steppes Monwing and grazing Soil microorganisms Population dynamics |
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