窄冠刺槐无性系根段扦插育苗研究  

Study on Cutting Propagation of Robinia pseudoacacia Clones

作　　者：孙尚伟[1] 兰再平[1] 刘俊琴[1] 布日古德[2] 梁鹏飞 耿军 

机构地区：[1]中国林业科学研究院世界银行项目办公室,北京100091 [2]中国林业科学研究院华北林业实验中心,北京102300 [3]孟州市林业科学研究院,河南焦作454750

出　　处：《林业科学研究》2015年第3期437-440,共4页Forest Research

基　　金：林业公益性行业科研专项经费项目(201104018)

摘　　要：刺槐（RobiniapseudoacaciaL．）因其木质坚硬，色泽纹理美观，耐磨耐腐蚀，抗弯抗压及抗剪强度高，是制造地板、家具等产品的优质木材。我国从20世纪70年代开始对刺槐进行遗传改良，先后在次生种源选择、优良无性系选育等方面做了大量研究，选育出了一大批生长表现良好的优良无性系，特别是于2002年在河南省选育的窄冠刺槐优良无性系，生长快，主干通直圆满，分枝角度小，Study on cutting propagation technology of black locust clones was carried out in Henan province in order to improve the qualified rate of seedlings. Survival rate, qualified rate, ground diameter and height of seedlings was studied under diameter and length of root segments and planting methods, obtained the following results and conclu- sions ： The ground diameter of clonal seedlings by three planting methods including buried, oblique cuttage and ver- tical cuttage was the same. The seedling height planted by vertical cuttage increased 11.5 % and 4.5 % respectively than that by buried and oblique cuttage, and the survival rate of seedlings by buried was significantly lower 10.45% 11.23% than that by oblique cuttage and vertical cottage. Different diameter and length of root segments had great influences on survival rates but had no influences on growth for clonal seedlings. The diameter and height of root segments was larger, the survival rate and qualified rate of clonal seedlings was higher. Using root segments that diameter was larger than 0.5 cm, length was 10 cm to propagation, it could obtain much higher qualified rate which was about 60% at the end of growing season. Using root segments that diameter was larger than 0.5 cm, length was 8 cm to propagation, the qualified rate was about 50%. Using root segments that diameter was less than 0.5 cm, length was less than 6 cm to propagation, the qualified rate was lower than 40%. Therefore, for cutting propagation of black locust clones, should use vertical cuttage, and length and diameter of root segment should be more than 0.8 cm, and 0.5 cm, in this way, the qualified seedling can reach more than 50%.

关 键 词：刺槐 无性系 扦插育苗 根段直径 根段长度 扦插方法 

分 类 号：S723.132[农业科学—林木遗传育种]