南方型黑杨不同扦插处理苗期生长特性及根系差异研究  

Seedling growth characteristics and root differences of southern type of Populus deltoides with different cutting treatments

作　　者：杨艳[1] 汤玉喜[1] 唐洁[1] 李永进[1] YANG Yan;TANG Yuxi;TANG Jie;LI Yongjin(Hunan Academy of Forestry,Changsha 410004,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004

出　　处：《湖南林业科技》2018年第5期7-11,共5页Hunan Forestry Science & Technology

基　　金：湖南省科技重大专项(2017NK1010);"十三五"国家重点研发计划"林业资源培育及高效利用技术创新"重点专项(2016YFD0600402-2);湖南省重点研发计划(2016NK2160)

摘　　要：为探讨作垄覆膜处理对南方型黑杨苗期生长特性及根系生长的影响机理,对作垄与作垄兼覆膜两种扦插处理方式下黑杨生长及根系分布差异进行了研究。结果表明,作垄兼覆膜处理下的苗木树高及地径分别较仅作垄扦插增长24. 47%和10. 68%,能够有效的增加苗木的干物质积累;通过作垄兼覆膜处理的苗木根系生长良好且分布均匀,能有效的吸收土壤中的水分和养分,为苗木地上部分的生长提供有利的条件。In order to discuss the influence mechanism of the ridged coating treatment on seedling growth characteristics and root growth of Southern type of Populus deltoides,the difference of Southern type of Populus deltoides growth and root distribution under the two kinds of cuttage treatment modes of ridging and ridged coating are studied. The results showed that the height and ground diameter of seedling were increased by 24. 47% and 10. 68%,respectively. When compared with ridging treatment,the other treatment could effectively increase the dry matter accumulation of seedling. The seedling roots grow well and evenly,and effectively absorb moisture and nutrients from soil under the ridged coating treatment. This treatment provides favorable conditions for the growth of seedling on the ground.

关 键 词：南方型黑杨 作垄 覆膜处理 苗木生长 根系分布 

分 类 号：S792.11[农业科学—林木遗传育种]