不同遮荫处理对擎天树幼苗生长的影响  

Effects of Different Shade Treatments on the Seedling Growth of Parashorea chinensis

作　　者：杜加加 梁机[2] 陈月芳 马放中 

机构地区：[1]梧州市林业技术推广站,广西梧州543002 [2]广西大学林学院,广西南宁530005 [3]贺州市林业科学研究所,广西梧州543100

出　　处：《福建林业科技》2016年第1期61-64,共4页Journal of Fujian Forestry Science and Technology

基　　金：广西"十一五"林业科学研究项目(珍贵树种擎天树种质资源调查与保存;生长规律和木材材性研究;桂林科字2010-19)

摘　　要：对擎天树田间播种苗采用双层遮荫网、单层遮荫网和不遮荫(CK)3种遮荫处理试验,探讨不同遮荫度对幼年苗木生长的影响。结果表明,不同遮荫处理对幼苗生长与质量具有极显著影响,以单层遮荫网处理的幼苗生长最优,其叶绿素含量、可溶性糖含量分别比不遮荫处理提高56.16%、73.79%;过度遮荫及完全裸露均不利于幼苗的生长。In order to understand the effects of different shade treatments on the seeding growth of Parashorea chinensis,double layer shadowing net,single layer shadowing net and none-shadow managements are adopted to Parashorea chinensis seedlings planted in field. The result shows,there are extremely significant influences on the growth and quality of the seedlings of different shadow managements. Among which,the single layer shadowing net management is the best,with 56. 16% and 73. 79% higher of chlorophyll and soluble sugar than none-shadow management,respectively. Both over-shadow and completely exposure are bad for the growth of seedlings.

关 键 词：擎天树 遮荫度 幼苗生长 

分 类 号：S792.99[农业科学—林木遗传育种]