不同激素处理和基质配方对楸树嫩枝扦插生根的影响  

Rooting Response of Catalpa bungei Softwood Cutting to Different Hormone Treatments and Medium Mixture

作　　者：张博[1] 兰再平[1] 马可[1] 胡海姿[1] 

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

出　　处：《林业科学研究》2011年第6期749-753,共5页Forest Research

基　　金：国家林业局948项目"难生根树种扦插繁殖智能控制技术引进"(2005-4-53)

摘　　要：在计算机智能控制温室中,保证生根期空气温度18 28℃,空气相对湿度90%95%,以圆基长果楸为材料进行了楸树嫩枝扦插对比试验并对生根率及生根性状进行了研究。对比了ABT-1和NAA两种激素的不同浓度、不同处理方法、不同处理时间的组合,以及泥炭、珍珠岩、河沙、蛭石不同配比的基质组合对生根的影响。结果表明:1 000 mg.kg-1ABT-1或1 000 mg.kg-1NAA滑石粉稀释粉剂速蘸的激素处理对楸树嫩枝扦插较适宜;楸树嫩枝扦插的最佳基质配方为泥炭∶珍珠岩=1∶1;采用该激素处理和基质配方组合的楸树嫩枝扦插平均生根率达83%。A study was conducted on softwood cutting of Catalpa bungei considering the rooting rate and rooting trait by using Yuanjichangguo（Long-fruit and round-base） Catalpa as cutting material in automatic control greenhouse,with controlled air temperature 18—28 ℃ and humidity of 90%—95% during the rooting period.Two kinds of hormones of ABT-1 and NAA were used in different concentrations,treating methods and treating durations,and four kinds of mediums of peat,perlite,sand and vermiculite were adopted in different mixing proportions for the study.The results showed that high rooting rate and good rooting trait were achieved when softwood cuttings were treated with quick dipping of 1 000 mg·kg-1 ABT-1 or 1 000 mg·kg-1 NAA hormone with talc powder mixture,and when the medium mixture of peat∶ perlite = 1∶ 1 was employed.The highest rooting rate of 83% was achieved from the best combination of appropriate hormone treatments and medium mixture for the softwood cutting of C.bungei.The study results can be important references to promote the rooting rate in developing rooted cutting plants of Catalpa bungei.

关 键 词：楸树 嫩枝扦插 生根率 生根性状 激素处理 基质配方 

分 类 号：S722.3[农业科学—林木遗传育种]