CAJ | 학술논문

从蓝莓根际土壤中筛选出4种植物根际促生细菌（ PGPR） L12、L13、L14和L15。通过蓝莓盆栽试验，研究了这4株PGPR对蓝莓根际土壤养分与微生物数量的影响。结果表明，在蓝莓的一个生长周期内， L13和L14能够显著增加蓝莓根际土壤中的可培养微生物数量，而接种L12和L15降低了蓝莓根际土壤中可培养微生物的数量；接种4株PGPR均能增加土壤有机质含量。 L13对土壤速效养分具有明显的促进作用，增加幅度为5．05％～22．27％；菌株L15、L14、L13对土壤酶活性的影响较大。综合以上分析，L13能够明显改善蓝莓根际土壤的养分状况和提高根际土壤微生物数量，具有良好的应用潜力。
종람매근제토양중사선출4충식물근제촉생세균（ PGPR） L12、L13、L14화L15。통과람매분재시험，연구료저4주PGPR대람매근제토양양분여미생물수량적영향。결과표명，재람매적일개생장주기내， L13화L14능구현저증가람매근제토양중적가배양미생물수량，이접충L12화L15강저료람매근제토양중가배양미생물적수량；접충4주PGPR균능증가토양유궤질함량。 L13대토양속효양분구유명현적촉진작용，증가폭도위5．05％～22．27％；균주L15、L14、L13대토양매활성적영향교대。종합이상분석，L13능구명현개선람매근제토양적양분상황화제고근제토양미생물수량，구유량호적응용잠력。
Four plant growth -promoting rhizobacteria ( PGPR) named L12, L13, L14 and L15 were screened from blueberry rhizospheric soil .Pot experiments were conducted to evaluate the effects of different PGPR inoculation on soil nutrient and microbial quantity in blueberry rhizosphere .The results showed that , during one growth cycle , the inoculation of L13 and L14 could significantly increase the culturable microorgan-ism population in blueberry rhizosphere , whereas the population was significantly decreased by L 15 and L12 inoculation .All of the 4 PGPR could increase the soil organic matter content .L13 had significant effects on soil available nutrient , and the increasing range was 5.05%~22.27%.L15, L14 and L13 had greater effects on soil enzyme activity .Above all , L13 could improve the soil nutrient and microbial quantity in blueberry rhi-zosphere , and had broad application prospects .