Pt菌剂处理对尾叶桉苗木生长及营养物质积累的影响  

Impacts of Pt agents on Eucalyptus urophylla seedling growth and nutrient accumulation

作　　者：李亚林 李磊 李福秀[3] 

机构地区：[1]铜仁市碧江区林业局,贵州铜仁554300 [2]贵州省林业调查规划院,贵州贵阳550003 [3]西南林业大学资源学院,云南昆明655022

出　　处：《广东农业科学》2015年第2期43-48,共6页Guangdong Agricultural Sciences

摘　　要：通过对尾叶桉苗木采用Pt菌剂和水分胁迫处理,研究不同处理对该苗木生长及营养物质积累的影响,并对其抗旱性进行了综合评价。结果表明:不同Pt菌剂处理对尾叶桉苗木生长及营养物质积累的影响显著,尾叶桉苗木在接种菌剂后,生长受到促进,其中在常规浇水条件下营养物质的积累以接种菌剂10g最好,而干旱胁迫条件下营养物质积累以接种菌剂15g最好;抗旱性综合评价结果表明,在干旱胁迫条件下尾叶桉苗木接种菌剂15g为最佳造林措施。Eucalyptus urophylla as the Myrtaceae Eucalyptus species,is one of the main forestation tree species in thedry hot valley of Yunnan.Pisolithus tinctorius（Pers.） Coker Edcouch referred to as Pt,is a kind of common pine ectomycorrhizal fungi,and belongs to Basidiomycotin.In this study,taking E.urophylla seedlings as experimental materials,under the condition of Pt bacteria inoculated withdifferent concentrations in normal irrigation anddrought stress respectively,the effects ofdifferent treatments on growth and nutrient accumulation of the seedlings were analyzed,and thedrought resistance of E.urophylla seedling was comprehensively evaluated.The results showed thatdifferent Pt treatments significantly promoted the seedling growth and nutrient accumulation of E.urophylla.Under normal irrigation condition,the nutrient accumulation of E.urophylla was the best when Pt was 10 g; underdrought stress condition,the nutrient accumulation of E.urophylla was the best when Pt was 15 g.Comprehensive evaluation ofdrought resistance showed that,underdrought stress condition,inoculation with Pt 15 g for E.urophylla was the best planting measures.

关 键 词：尾叶桉 PT菌剂 水分胁迫 综合评价 生物量 

分 类 号：S792.39[农业科学—林木遗传育种]