遮荫对橡胶树组培苗生长的影响  

Effect of Defferent Shading on Growth of Tissue-cultured Hevea Brasiliensis Seedlings

作　　者：陈青[1] 周珺[1,2] 王军 林位夫[1] CHEN Qing;ZHOU Jun;WANG Jun;LIN Wei-fu(Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou,Hainan 571737,China;Danzhou Investigation and Experiment Station of Tropical Crops,Danzhou Hainan 571737,China)

机构地区：[1]中国热带农业科学院橡胶研究所,海南儋州571737 [2]儋州热带作物科学观测实验站,海南儋州571737

出　　处：《福建农业学报》2018年第5期516-519,共4页Fujian Journal of Agricultural Sciences

基　　金：国家现代农业产业技术体系建设专项(CARS-33);海南省重点研发计划项目(ZDYF2016034)

摘　　要：通过人工遮荫方式研究5种遮荫强度(0%、50%、70%、80%和90%)对海南省橡胶树组培苗生长的影响。结果表明:90%遮荫条件下橡胶树组培苗的株高、茎粗、叶蓬距和叶片数均显著高于其他4个处理,且明显提高橡胶树组培苗的叶面积和叶绿素相对含量;90%遮荫的橡胶树组培苗出圃率最高(91.72%),显著高于其他处理。研究表明90%遮荫条件下能克服海南省夏天辐射过强、气温过高对橡胶树组培苗幼苗不良影响,有效提高植株生长、叶面积和叶绿素含量。Artificially imposed 0%（CK）,50%,70%,80% or 90% shading condition was applied on seedlings of rubber tree（Hevea brasiliensis）to evaluate the effect on growth of the plants in Hainan Province.The results showed that,with 90% shading,the height,stem girth,leaf whorl distance,and leaf count of the seedlings were significantly higher than those of the plants grown under other treatments.As compared to CK,the total area and chlorophyll content of leaves increased as well with the largely shaded condition,but decreased at 50% or 70%level.In addition,90% shading also rendered the significantly higher transplanting rate,at 91.72%.It appeared that 90% shading blocked much of the natural sunlight and lowered the surrounding temperature to significantly promote the growth and increase the leaf size and chlorophyll content of the tissue-cultured H.brasiliensis seedlings in Hainan Province.

关 键 词：橡胶树 组培苗 遮荫度 生长 

分 类 号：S318[农业科学—作物栽培与耕作技术]