几个树种生化物质作用下pH胁迫对杉木幼苗生长及生理的影响  

Effects of pH Stress on Chinese-fir Seedling Growth and Physiology under Allelochemicals of Several Tree Species

作　　者：丁国昌[1] 林思祖[1] 曹光球[1] 杨梅 

机构地区：[1]福建农林大学林学院,福建南平353001 [2]广西省柳江县林业局,广西柳江545100

出　　处：《江西农业大学学报》2003年第6期824-827,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：福建省自然科学基金(D0210017)资助项目

摘　　要：采用水浸提法提取杉木、木荷及马尾松枝叶生化物质,盆栽处理杉木幼苗6年后,分析不同浓度水浸液生化物质对盆栽土壤pH,N、K含量及杉木生长量,叶绿素含量和总光合作用强度的影响。分析结果表明:树种间差异而言,在同一试验条件下,与杉木处理的相比,木荷及马尾松水浸液生化物质处理的盆栽土壤pH值,N、K含量,杉木幼苗生长量及叶绿素含量均有不同程度增加,总光合作用强度增强;与对照相比,除了木荷水浸液处理的N含量比对照高外,其余各树种处理的N及K含量均比对照低,就苗木生长指标及叶绿素含量、总光合作用强度而言,各树种处理的均比对照高。After Chinese-fir seedlings were treated by aqueous extract of Cunninghamia lanceolata, Schima superba and Pinus massoniana for six years, the content of pH value, N and K of soil in the basin, biomass, content of chlorophyll and total phoyosynthetic rate were analyzed. The results showed that: compared to the treatments with other tree species, aqueous extract of Schima superba and Pinus massoniana had positive allelopathic effects on pH value, content of N and K of soil in the basin, biomass, content of chlorophyll and total phoyosynthetic rate; compared to the control, the treatment of Schima superba had positive effect on N content, other tree species had inhibiting effect on N and K content; as far as seedling growth and physiological index were concerned, all the tree species had positive effect on growth and physiological index compared to control.

关 键 词：杉木 pH 混交树种 生化物质 幼苗生长 生理 

分 类 号：S791.27[农业科学—林木遗传育种] S718.52[农业科学—林学]