菌根化栓皮栎苗木对不同土壤水分条件的形态和生理响应  

The Morphology and Physiological Response of Mycorrhizal Seedlings of Quercus variabilis under Different Soil Moisture Levels

作　　者：付瑞[1] 郭素娟[1] 马履一[1] 

机构地区：[1]北京林业大学省部共建教育部森林培育与保护重点开放实验室,北京100083

出　　处：《西北林学院学报》2011年第2期101-104,206,共5页Journal of Northwest Forestry University

基　　金："十一五"国家科技支撑计划课题"速生丰产林良种壮苗规模化生产技术研究与示范"(2006BAD24B0101);北京市教育委员会学科建设与研究生培养项目-北京城市生态环境建设产学研联合培养研究生基地资助(二期资助)

摘　　要：以1年生接菌与不接菌栓皮栎容器苗为对象,通过设置85%~75%θf,65%~55%θf,45%~35%θf3种土壤水分梯度,研究了菌根化栓皮栎苗木对不同土壤水分条件的形态和生理响应。结果表明,接菌显著促进栓皮栎苗木地上部分及根系的生长,提高叶绿素含量、净光合速率和水分利用效率。其中,接菌栓皮栎苗木在65%~55%θf条件下生长最佳,净光合速率和水分利用效率最高;具有菌根的栓皮栎苗木达到合格苗的需水量,明显低于85%~75%θf,可见,接种菌根菌可节约水资源。Morphology and physiological response of one-year seedlings of Quercus variabilis inoculated with mycorrhizal under different soil moisture levels（85 %-75 %θf,65 %-55 %θf,45 %-35 %θf） were investigated.The results showed that inoculation of mycorrhizal could significantly promote seedling shoot and root growth,increase chlorophyll content,net photosynthetic rate and water use efficiency.Under the water level of 65 %-55 %θf,the mycorrhizal inoculated seedlings exhibited the best growth,highest net photosynthetic rate,and water use efficiency,the water demand to nursing qualified seedling was significantly lower than that under the water level of 85 %-75 %θf,indicating that the mycorrhizal inoculation could save water use.

关 键 词：栓皮栎 菌根 水分利用效率 

分 类 号：S718.43[农业科学—林学]