山乌桕富根壮苗培育试验  

The cultivation test of enriching root and strengthening seedling of Sapium discolor

作　　者：杨明友 吴际友[2] 程勇[2] 陈明皋[2] 黄小飞[2] 张珉[2] 魏志恒 刘球[2] 李华军 单志毅 刘红 吴其军 Yang Mingyou;WU Jiyou;CHENG Yong;Chen Minggao;HUANG Xiaofei;ZHANG Min;WEI Zhiheng;LIU Qiu;LI Huajun;SHAN Zhiyi;LIU Hong;WU Qijun(Yuanling County Forestry Bureau,Yuanling 419600,Hunan,China;Hunan Academy of Forestry,Changsha 410004,Hunan,China;Huangfengqiao State-owned Forest Farm,Youxian 412307,Hunan,China;Hunan Guanda Agriculture and Forestry Technology Co.,Ltd.,Changsha 410004,Hunan,China)

机构地区：[1]沅陵县林业局,湖南沅陵419600 [2]湖南省林业科学院,湖南长沙410004 [3]黄丰桥国有林场,湖南攸县412307 [4]湖南冠达农林科技有限公司,湖南长沙410004

出　　处：《湖南林业科技》2020年第5期68-71,共4页Hunan Forestry Science & Technology

基　　金：湖南省重点研发计划“绿色宜居乡村生态景观营造技术研究与示范”(2018NK2051)。

摘　　要：对1年生山乌桕苗木开展了GGR6促根处理及苗木培育密度试验。结果表明:GGR6处理能显著增加1年生苗木Ⅰ级侧根的数量,形成山乌桕富根苗;随着单位面积苗木株数的增加,苗木的地径生长减少,苗木质量下降。据试验结果并结合生产实际,确定合适的山乌桕育苗密度为40株·m^-2。因此,适宜的GGR6处理浓度和单位面积育苗株数是培育山乌桕富根壮苗的关键。The GGR6 root-promoting treatment and seedling cultivation density experiment were carried out on the one-year-old seedlings of Sapium discolor.The results showed that GGR6 treatment could significantly increase the number of grade I lateral roots of one-year-old seedlings and form root-rich seedlings.With the increase of the number of seedlings per unit area,the ground diameter growth and quality of seedlings were decreased.Combined test results with production practice,the suitable seedling density of Sapium discolor was 40 plants·m^-2.Therefore,the appropriate GGR6 treatment concentration and the appropriate density were the key to cultivating strong seedlings of Sapium discolor with rich roots.

关 键 词：山乌桕 富根苗 育苗密度 

分 类 号：S723.131[农业科学—林木遗传育种]