2017年第3期
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生长调节剂及基质对杉木微扦插生根的影响

韩吉思,玉志鹏,王芳,卢亚晴,杨梅
广西大学林学院,广西国有维都林场,广西国有维都林场,广西大学林学院,广西大学林学院
摘要:
以广西省贺州市东潭林业科学研究所杉木(Cunninghamia lanceolata)无根组培苗为材料,进 行微扦插生根试验,初步建立杉木组培苗微扦插生根技术方法。结果表明:(1)以 50 mg/L IBA 25 mg/ L NAA 做生根剂、黄心土做基质,生根周期缩短,生根率达 72%,为基质与生长调节剂的较优组合;(2) 在植物生长调节剂中浸泡 15 min 的吸收效果最好,生根率达 75%;(3)移栽后追施 10 mg/L NAA 的苗木 生根质量较优,生根率达 88%。
关键词:   杉木;微扦插;基质;生长调节剂
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Effects of Different Growth Regulators and Substrate on the Rooting of Micro-cuttage of Cunninghamia lanceolata
HAN JI-si,YU ZHI-peng,WANG FANG,LU YA-qing and YANG Mei
College of Forestry,Guangxi University,Guangxi Weidu State Forest Farm,Guangxi Weidu State Forest Farm,College of Forestry,Guangxi University,College of Forestry,Guangxi University
Abstract:
The rooting of micro-cuttage experiment of Cunninghamia lanceolata was carried out by using the rootless tissue culture seedling as the material from Dongtan Academy of Forest in Guangxi, and the method of micro-cuttage rooting for rootless tissue culture seedling of C. lanceolata was preliminarily established. The results were as follows: (1) The optimal combination of substrate and growth regulators was 50 mg/LIBA 25 mg/LNAA as rooting agent and subsoil of the yellow earth as substrate, the cycle of rooting was shortened and the rooting rate was 72%; (2) The time of soaking in the plant growth regulator was better at 15 min, and the rooting rate was 75%; (3) In the later management, the rooting quality of NAA seedling was better than that of 10 mg/L, and the rooting rate was 88%.
Key words:   Cunninghamia lanceolata; micro-cuttage; substrate; growth regulator