植物根际促生菌（PGPR）对高寒区3种栽培饲草促生效果研究

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中图分类号：Q945.79 文献标识码：A 文章编号：1007-0435（2025）07-2388-12

引用格式：，等.植物根际促生菌（PGPR）对高寒区3种栽培饲草促生效果研究[J].草地学报，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号 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

植物根际促生菌（Plant growth promoting rhizobacteria，PGPR）是指定殖于植物根系或植物茎叶的，生活在土壤中的一类有益微生物，它能够促进植物生长发育、增加作物产量以及防治植物病虫害等[1-2]。（剩余21917字）