植物根際促生菌（PGPR）對高寒區(qū)3種栽培飼草促生效果研究

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中圖分類號：Q945.79 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-0435（2025）07-2388-12

引用格式：，等.植物根際促生菌（PGPR）對高寒區(qū)3種栽培飼草促生效果研究[J].草地學(xué)報，2025，33 （7） ：2388-2399 LEI Sheng-yan，ZHANG Ying，SU Bei-bei，et al.Effects of Plant Growth Promoting Rhizobacteria （PGPR）on Three Cultivated Forages in Alpine Area[J].Acta Agrestia Sinica，2O25，33（7） ：2388-2399

Effects of Plant Growth Promoting Rhizobacteria（PGPR）on Three Cultivated Forages in Alpine Area

LEI Sheng-yan1，ZHANG Yingl，SUBei-bei1，DAO Ri-na1，MALin-xiong1，TIE Xiao-longl，LIUWen-hui2 （1.CollegeofgiludialHusbandryQigiUivesityKybotoryofiGassadEoloji Xining，QinghaiProvince81Oo16，China；2.LaboratoryofGermplasmResourcesResearchandUtilizationofQinghai-TibetPlateau， Academy of Animal Scienceand Veterinary Science，Xining，Qinghai Province 8lOol6，China）

Abstract：In order to investigate the growth promotion effects of 5 strains of azotobacter and 5 strains of phospho rus solubilizing bacteria on 3 kinds of cultivated forages in high cold area，14 groups of single and compound inoculants were used to inoculate com （Zea mays L.），oat （Auena sativa L.） and alfalfa（Medicago Satiua L.），and plant height，biomass and root morphology were determined in this study.The results showed that there were diffrences in the growth indices ofcorn，oat and alfalfa. Among them，compound inoculant A+B+ （204號 F had significant growth promoting efects on aboveground biomass，underground biomass，root total length and root surface area ofcorn，which were significantly higher than those on other treatments （ P<0.05） .Compound inoculants B+G+H and A+B+F had obvious growth-promoting effects on plant height，aboveground biomass，underground biomass，root length，root diameter，root volume and root surface area of oat. In the alfalfa inoculation experiment， the effects of compound inoculant A+F on plant height，aboveground biomass，under ground biomass，root length，root diameter，root volume and root surface area of alfalfa were significantly higher than those on other treatments and controls （P<0.05） .In short，the compound inoculant had more potential to develop microbial fertilizer than the single strain，which could providea new idea for applied agriculture. Key words：Plant growth promoting rhizobacteria;Alpine area; Cultivated forage; Promoting effect

植物根際促生菌（Plant growth promoting rhizobacteria，PGPR）是指定殖于植物根系或植物莖葉的，生活在土壤中的一類有益微生物，它能夠促進(jìn)植物生長發(fā)育、增加作物產(chǎn)量以及防治植物病蟲害等[1-2]。（剩余21917字）