台湾肖楠扦插育苗试验

Experiment on cuttage seedling of Calocedrus formosana

采用不同扦插季节、扦插基质配比、生根激素、不同母树年龄插穗4种处理进行台湾肖楠扦插对比试验,探讨不同处理对台湾肖楠扦插生根率、生根数、根长的影响。结果表明:不同季节对台湾肖楠扦插苗成活率的影响显著,3月扦插的台湾肖楠成活率最高且生根数最多,不同季节对台湾肖楠扦插苗根长的影响差异不大;细沙作为基质的台湾肖楠扦插苗生根数和根长相对于其它基质配比均最大,3泥炭土7黄土配比作为基质的台湾肖楠扦插苗的成活率相对于其它基质配比均最高;用NAA处理的台湾肖楠穗条扦插苗生根数和根长相对于其它生根剂配比均最大,IBA处理的台湾肖楠穗条成活率相对于其它生根剂配比均最高,但差异均不显著;插穗母树年龄对成活率影响极显著,1~2年生的穗条成活率最高,达83.8%,10年生和20年生的穗条成活率均不高。母树年龄对根长的影响不大,对生根数量有一定影响,1~2年生的穗条生根数最高,20年生的穗条其次。

Using Calocedrus formosana as the test material,the comparative experiments of different cutting seasons,cutting substrate ratio,rooting hormone and different mother tree age cuttings were conducted to analyze and explore the effects of different treatments on rooting rate,rooting number and root length.The results showed that different seasons had significant effects on the survival rate of C.formosana cuttings.The cuttings in March had the highest survival rate and maximum number of roots.The effect of different seasons on the root length of C.formosana cuttings was not significant.The rooting number and root length of C.formosana cuttings with silver sand as substrate were the highest compared with other substrates,and the survival rate of C.formosana cuttings with 3 peat soil and 7 loess as substrate was the highest compared with other substrates.The rooting number and root length of cuttings treated with NAA were the highest compared with other rooting agents,and the survival rate of cuttings treated with IBA was the highest compared with other rooting agents,but the difference was not significant.The age of the mother tree had a extremely significant effect on the survival rate,the survival rate of cuttings in 1~2 year was the highest,which was up to 83.8%.The survival rate of cuttings in 10 years and 20 years was not high.The age of the mother tree had little effect on the root length,but had a certain effect on the number of roots.The number of roots was the highest in 1~2 year old cuttings,followed by 20 year old cuttings.