巨尾桉接种植物促生菌生长及效益分析.pdfVIP

第46卷 第1期 广 西 林 业 科 学 Vol.46 No.1 2017年3 月 GuangxiForestry Science Mar.2017 文章编号：1006-1126-2017 （1） -0115-04 巨尾桉接种植物促生菌生长及效益分析 王劲松，吴朝学，玉志鹏，苏维剑 （广西国有维都林场，来宾 546100） 摘 要：对巨尾桉 （Eucalyptus grandis × E. urophylla ）广林9 号无性系接种8 组不同植物促生菌PGPR （plant growth-promoting rhizobacteria ）进行随机区组设计造林，并对试验林进行的生长调查及经济效益分析，结果表明：巨尾 桉接种植物促生菌后，幼龄期林木生长显著，中龄期至近熟期林木生长减慢；接种菌株可提高林木蓄积，增加经济效 益，以菌株L2+P 接种林木出材量最大，57 月龄相比对照林木高11.5% ；解磷菌与固氮菌组合接种后的林木蓄积显著高 于接种解磷菌的林木蓄积。 关键词：巨尾桉；促生菌 （PGPR ）；林木生长；经济效益 中图分类号：S792.39 文献标识码：A TheGrowthandBenefitAnalysisofEucalyptusgrandis×E.urophylla InoculatedwithPGPR WANG Jin-song ，WU Chao-xue ，YU Zhi-peng ，SU Wei-jian （Guangxi State Weidu Forest Farm, Laibing, Guangxi 546100, China） Abstract：With randomized block design, we studied the afforestation test of Eucalyptus grandis × E.urophylla GLGU9 clone which were respectively inoculated with 8 different groups of mixed PGPR. Through the growth investigation and the economic benefit analysis of the tree, the results showed that Eucalyptus grandis × E. urophylla inoculated with PGPR could grow rapidly during the young stage, but the growth slowed down from middle age to near- mature stage. Inoculation with PGPR could promote the stand volume and economic benefits of the tree. When 57 months old, the tree inoculated with strain L2+P showed the largest timber yield which was 11.5% higher than the control group. The stand volume of the tree inoculated with nitrogen fixing bacteria and phosphorus bacterial were higher than that of the tree