摘要
研究了GGR处理、扦插基质、扦插时期等因素对白檀嫩枝扦插繁殖效果的影响。结果表明,白檀在5月中下旬扦插效果最好,生根快,成活率高,根径、根长最长相对较好,根数也达到要求;3种扦插基质均能较好地促进白檀生根,生根率均达到90%以上,其中以珍珠岩中生根数量最多,珍珠岩∶蛭石体积比1∶1中的根长最长,3种基质中的根径差异不明显。3种GGR浓度及处理时间均能较好地促进白檀生根,在根径、根长及根数等指标上的差异不明显;生根后的白檀春季移栽明显好于冬季。白檀嫩枝扦插适宜方案为:5月中下旬用300 mg/L的GGR处理插穗基部0.5 h后,扦插于蛭石:珍珠岩体积比1∶1的混合基质中,生根后的插穗于次年春季移栽。
In this paper, we focused on the effects of rooting reagent GGR concentrations, cutting substrates, cutting time and other factors on Symplocos paniculata softwood cutting. The results showed that the best cutting time of S. paniculata was in the late May, with the advantages of fast rooting, high survival rate, better root diameter and the longest root length. The root number also met the requirements. The three cutting substrates could well promote S. paniculata rooting and rooting rates all reached more than 90%. Among these samples, the largest rooting number was the one placed in the substrate of perlite, the longest root was the one in the mixed substrate of vermiculite and perlite which were at the same ratio, and there was no significant difference of rhizome in the three matrixes. Three different treatments of rooting reagent GGR concentrations and proceeding time all could well promote S. paniculata rooting and there was no significant difference in these indicators such as rhizome, root length and the number of roots. The S. paniculata cuttings transplanted in spring was obviously better than in winter. In short, the best program for softwood cutting propagation of S. paniculata was as follows ： The cuttings were soaked in rooting reagents GGR of 300 mg/L for 0.5 hour in the mid or late May, and then placed in the mixed substrate of vermiculite and perlite at the same ratio.
出处
《林业科技开发》
北大核心
2013年第4期93-96,共4页
China Forestry Science and Technology
基金
江西省科技支撑项目(编号:20112BBG70003
2010BNB00502)
江西省教育厅科研基金(编号:GJJ12232)
关键词
白檀
嫩枝扦插
生根剂处理
扦插基质
扦插时期
移栽时间
Symplocos paniculata
softwood cuttings
rooting powder
cutting substrates
cutting time
transplanting time
