重瓣一品红嫩枝扦插繁殖研究  

Studies on the Techniques of Euphorbio pulcherrima Propagation by Semi-hardwood Cutting

作　　者：张石宝[1] 

机构地区：[1]中国科学院昆明植物研究所,云南昆明650204

出　　处：《西南林学院学报》2000年第1期17-22,共6页Journal of Southwest Forestry College

摘　　要：对重瓣一品红 (EuphorbiopulcherrimaWilld .)的嫩枝扦插育苗技术进行了研究 .结果表明 :半木质化枝条生根快 ,成活率明显高于老基干和成熟枝条 ;叶和芽对一品红插条生根影响较大 ,全部去叶时其生根率仅 8 7% ,以去除下部叶及上部叶片的 1 /2并保留芽较为适宜 ;NAA和IBA对一品红插条生根具有显著的促进作用 ,最适浓度质量分数比分别为 30 0× 1 0 -6和 5 0 0× 1 0 -6,但二者的混合液效果更好 ;以 1 /1 0 0 0的多菌灵和百菌清在插前处理插条 ,百菌清使生根率提高而多菌灵对生根有抑制作用 ;过强和过弱的光照均不利于生根 ,前期保持 40 %的相对光照 ,1 2d后透光量增加到 85 % .在所试验的 6种基质中 ,以红土 +炭渣 +腐殖土 ( 1∶1∶1 )生根效果最好 .插前将插条置于清水中浸泡 2h既能使插条吸足水分又可洗去切口上的白色汁液 ,因而对生根有促进作用 .The techniques of Euphorbio pulcherrima propagation by branch cuttng were studied in the paper.The results showed that:①The rooting percentage and survival rate of semi hardwood cutting were obviously higher than that of hardwood cutting.②Rooting percentage was only 8.7% with entire leaves removing from cuttings.Remaining one second leaves in the middle part of the cutting,however,was suitable for rooting.③Rooting capacity was significantly improved by the treatment of NAA and IBA with the concentration of 300×10 -6 ,500×10 -6 respectively,but the combination of the two kind of plant hormone would be better.④Cutting treatment with Dacomil promoted root formation,but Bavistin treatment reduced rooting capacity.⑤The natural light intensity should keep at 40% in 12d after cuttage,and then increased to 85%.⑥The best media for cuttage was the mixture of equal red soil,humus and coal cinder.⑦Putting cuttings into water for 2h before cuttage could improve rooting because the cuttings absorbed enough water and cleaned the white juice on the cut.

关 键 词：重瓣一品红 嫩技扦插 植物激素 光照 繁殖 

分 类 号：S685.230.4[农业科学—观赏园艺]