在全光喷雾条件下，采用外源激素NAA和IBA不同浓度及不同处理时间对贴梗海棠插穗进行了生根试验。结果表明，在试验设计范围内，NAA以150 mg/L浓度处理插穗30 min的生根效果最好，生根率高达84.33%，平均根数达10.90条，平均根长达4.93 cm，且根系发达、健壮；IBA以150 mg/L浓度处理插穗60 min的生根效果最好，生根率高达92.10%，平均根数达8.10条，平均根长达4.52 cm，且根系发达、健壮。综合比较认为，以IBA 150 mg/L浓度处理插穗60 min对促进插穗生根的效果最好。

In conditions of full exposure and mist spray， using different concentrations and different treatment time of exogenous NAA and IBA on cuttage rooting test of Chaenomeles speciosa is studied. The result shows that the effect is better with NAA 150 mg/L concentration of 30 minutes rooting cuttings， the rooting rate reached 84.33%， the average number of root is 10.90， the average root length is 4.93 cm and well developed root system in the experimental design； the effect is better with IBA 150 mg/L concentration of 60 minutes rooting cuttings， the rooting rate reached 92.10%， the average number of root is 8.10， the average root length is 4.52 cm and well developed root system. Comprehensive comparison shows that the effect of promote the cutttage rooting is better with IBA 150 mg/L concentration of cuttings 60 minutes in the treatment to promote the rooting cuttings.

S661.4

兰州市科技局科技攻关项目(2014-1-245)。