乌桕扦插育苗技术研究

分别以幼树1a生木质化、大树1a生半木质化和2a生木质化枝条为材料,将3种生根剂ABT、911、IAA配成500,200,100,0mg／kg的浓度梯度,分别快蘸5s、浸泡12h和20h,研究鸟桕插条生根率、生根数量、生根长度与不同生根剂类型、不同浓度及浸泡时间长短的关系。试验结果表明：911生根剂100mg／kg浸泡20h的半木质化嫩枝平均生根率为72．2％,1a生木质化硬枝911生根剂500mg／kg快蘸5S大田扦插的平均生根率为82．2％,根数达9．0根;半木质化嫩枝911生根剂200mg／kg浸泡12h的平均生根数达3．9根,不同浓度生根剂和浸泡时间对根系长度无显著影响。

Study on Technique of Cuttage Seedling-Raising for Sapium sebiferum Roxb.

One-year lignified seedlings,one-year semi-lignification tress and two-year lignified branches were soaked with the ABT,911,IAA rooting agent with the concentration of 500,200,100 mg/kg for 5 seconds、12 hours and 20 hours.The relation of the rooting rate,the rooting number,the rooting length and the types of rooting agent,the concentration of rooting agent and soaking time were studied.The results indicated that semi-lignifcation branches were soaked with "911" rooting agent 100 mg/kg for 20 hours that rooting rate was 72.2%,one-year lignified branches are soaked "911" rooting agent 500 mg/kg for 5 seconds in field cuttage that rooting rate was 82.2%,root numbers are 9.0,semi-lignification branches are soaked "911",the average rooting numbers reached 3.9 by 200 mg/kg for 12 hours,the different rooting agent concentrations and soaking times has no extremely siginificant with rooting height.