银杏幼树黄化原因的调查及矫正试验  

The investigation and corrective experiment to the etiolation's cause of young Ginkgo plant

作　　者：蒋代华[1] 李昆志[1] 顾明华[1] 唐新莲[1] 陈佩琼[1] 白厚义[1] 

机构地区：[1]广西大学农学院,广西南宁530005

出　　处：《广西农业生物科学》2002年第2期87-91,共5页Journal of Guangxi Agricultural and Biological Science

基　　金：世界银行贷款第二期红壤开发项目 (桂农业科字 1 996第 44号 )

摘　　要：通过果园调查、室内化验分析 ,以及经田间小区试验、大田验证试验 ,查明了银杏幼树黄化的主要原因是土壤有效养分缺乏、p H值低 (酸度大 )、可能存在着铝毒危害等 ,并提出了相应的矫正措施 :合理施用 NPK、石灰、有机肥、 B、 Zn肥料 。The cause inducing etiolation in Ginkgo bilola L. and measures to improve the etiolation were investigated in this study by investigating in orchard,chemical analysis,plot and field experiment. The result indicated that the etiolation in Ginkgo biloba L. was mainly due to the deficiency of efficient nutrients in soils. Low pH in the soils and corresponding aluminumtoxicity might also cause the etiolation. The etiolation was improved by applying of N,P,K,B,Zn,lime and orgnic manures.

关 键 词：黄化原因 调查 矫正试验 银杏 幼树 

分 类 号：S792.95[农业科学—林木遗传育种]