根际促生菌对不同苗龄拟藿香叶绿绒蒿幼苗生长的影响  

The Effect of Growth-promoting Rhizobacteria on the Different Seedling Ages of Meconopsis baileyi

作　　者：王永霞 旦增尼玛 陈松焱 朗杰[2] 欧阳佳丽 邢震[1] WANG Yongxia;TENZIN Nyima;CHEN Songyan;LANG Jie;OUYANG Jiai;XING Zhen(Resources and Environment College,Xizang Agriculture and Animal Husbandry University;Plant and Science College,Xizang Agriculture and Animal Husbandry,Linzhi,Xizang 860000;Xizang Forest Science Research Institute,Lasa,Xizang 850000,China)

机构地区：[1]西藏农牧学院资源与环境学院 [2]西藏农牧学院植物与科学学院,西藏林芝860000 [3]西藏自治区林木科学研究院,西藏拉萨850000

出　　处：《高原农业》2025年第2期167-173,共7页Journal of Plateau Agriculture

基　　金：10种野生林下资源培育与示范(林芝市林草局委托项目);林芝雅尼河谷面山生态修复工程规划(DSF-Z-99)。

摘　　要：人工培育条件下,拟藿香叶绿绒蒿实生苗生长缓慢。为提高拟藿香叶绿绒蒿生长速度,本研究从野生拟藿香叶绿绒蒿根际土壤中筛选出促生功能菌株,制备了混合菌液菌肥;并选取5个苗龄的拟藿香叶绿绒蒿盆栽幼苗,进行了菌肥追施试验,通过测量株高、根长、叶面积、叶绿素含量等4项指标,研究了混合菌液对不同苗龄拟藿香叶绿绒蒿的生长影响。结果表明:(1)株高指标上,根际促生菌对5个苗龄的拟藿香叶绿绒蒿幼苗都有促进作用,但效果不明显;(2)根长指标上,根际促生菌对9个月苗龄的拟藿香叶绿绒蒿幼苗促进作用极显著(P<0.01,增加值38.94mm),对4个月苗龄幼苗的促进作用显著(P<0.05,增加值21.67mm);(3)叶面积指标上,根际促生菌对3个月苗龄幼苗叶面积的促进效果极显著(P<0.01,增加值19.59cm^(2)),对8个月苗龄幼苗的促生作用显著(P<0.05,增加值65.41cm^(2));(4)在叶绿素含量指标上,根际促生菌对8个月苗龄幼苗的促生作用显著(P<0.05,增加值8.10 SPAD)。综合认为:试验范围内,根际促生菌有利于提高拟藿香叶绿绒蒿实生苗生长速度,能够促进其实生苗的生长,且8个月苗龄是最佳施用期。Under cultivation conditions,the growth of seedlings of Meconopsis baileyi is slow.In order to improve it’s growth rate,this study screened functional strains from the rhizosphere soil of M.baileyi in wild,and prepared a mixed liquid bacterial-fertilizer;5 type seedlings of M.baileyi,which at different ages,were selected for bacterial-fertilizer experiment.By measuring four indicators,i.e.plant height,root length,leaf area,and chlorophyll content,the effect of growth-promoting rhizobacteria(PGPR)on the growth of M.baileyi seedlings at different ages was studied.The results showed that:(1)In plant height,PGPR had a promoting effect on 5 type seedlings of M.baileyi,but the effect was not significant;(2)In root length,PGPR had a highly significant promoting effect(P<0.01,increase 38.94 mm)on 9-month-old seedlings of M.baileyi,and a significant promoting effect(P<0.05,increase 21.67 mm)on 4-month-old seedlings;(3)In leaf area,PGPR had a highly significant promoting effect on 3-month-old seedlings(P<0.01,increase 19.59 cm^(2)),and a significant promoting effect on 8-month-old seedlings(P<0.05,increase 65.41 cm^(2));(4)In chlorophyll content,PGPR had a significant promoting effect on 8-month-old seedlings(P<0.05,increase 8.10 SPAD).Overall,it is believed that:in the scope of the experiment,PGPR can promote the growth of seedlings of M.baileyi,and the 8-month-old seedling is the best application period.

关 键 词：拟藿香叶绿绒蒿 苗龄 根际促生菌 

分 类 号：S688[农业科学—观赏园艺]