CAJ | 학술논문

采用平板溶磷圈法对典型黑土区4种林地（美青杨林、水曲柳林、落叶松林和樟子松林）土壤的磷细菌进行了分离和筛选，并测定了其解磷能力。结果表明：4种林地土壤中分布了大量的解磷菌和溶磷菌，其中每克解磷菌的菌落形成单位（CFU）为（5．43～16．81）×105、溶磷菌为（0．49～3．16）×105，且解磷菌数量多于溶磷菌。从4种林地土壤中分离得到了15株分解有机磷的解磷菌和11株溶解无机磷的溶磷菌；其中有2株解磷菌解磷能力较高，解磷圈直径与菌落直径比值均大于2．0，解磷量分别为0．50、1．13 mg/L；有2株溶磷菌溶磷能力较高，溶磷圈直径与菌落直径比值均大于2．0，溶磷量分别为0．90、0．18 mg/L。
채용평판용린권법대전형흑토구4충임지（미청양림、수곡류림、락협송림화장자송림）토양적린세균진행료분리화사선，병측정료기해린능력。결과표명：4충임지토양중분포료대량적해린균화용린균，기중매극해린균적균락형성단위（CFU）위（5．43～16．81）×105、용린균위（0．49～3．16）×105，차해린균수량다우용린균。종4충임지토양중분리득도료15주분해유궤린적해린균화11주용해무궤린적용린균；기중유2주해린균해린능력교고，해린권직경여균락직경비치균대우2．0，해린량분별위0．50、1．13 mg/L；유2주용린균용린능력교고，용린권직경여균락직경비치균대우2．0，용린량분별위0．90、0．18 mg/L。
The experiment was conducted to study the phosphoru bacterial strains from four kinds of forests soil including Poplar (Populus nigra var.italica×P.cathayan), Manchurian Ash (Fraxinus mandshurica), Larch (Larix gmelini) and Scots Pine ( Pinus sylvestris var.mongolica) in typical black soil region of northeastern China by plate P-solubilizing circle meth-od.The vast amounts of both phosphate-dissolving and phosphate-solubilizaing bacteria was distributed from four kinds of forest soils, which are in the ranges of (5.43-16.81)×105cfu· g-1 and (0.49-3.16)×105cfu· g-1, respectively.15 phosphate-dissolving bacterial strains and 11 phosphate-solubilizing bacterial strains with obvious dissolving phosphate zone were obtained from four kinds of forests soil.Two strains show strong ability of dissolving phosphate with a ratio of dissol-ving phosphate zone diameter to culture community zone diameter ( D/d) exceeding 2.0, and phosphate-dissolving capaci-ty were 0.50 and 1.13 mg/L, respectively.Two phosphate-solubilizing bacterial strains with stronger phosphate-solubiliz-ing capability were obtained with D/d of more than 2.0, and the phosphate-solubilizing capacity were 0.90 and 0.18 mg/L, respectively.