3个彩叶紫薇品种的扦插繁殖对比试验OA

In order to obtain a method for the propagation of Lagerstroemia indica by cutting.Three varieties of Lagerstroemia indica,namely Lagerstroemia indica Pink Velour,Lagerstroemia indica'Hongyun',and Lagerstroemia indica'Nongzi 1'were used as experimental materi-als.Different varieties,hormone types,and hormone concentrations were used as experimental factors to conduct comparative experiments on the hard branch propagation of crape myrtle.The results showed that hard branch cutting was carried out in late March to early April in spring,soak the base of the cuttings in a solution of NAA,IBA,or(NAA+IBA)1 500 mg/L for 2 hours before cutting.After 30 days of investiga-tion,it was found that among the three varieties,Lagerstroemia indica'Nongzi 1'had the best rooting effect,with the highest rooting rate of 92.4%.The use of NAA,IBA solution alone or a mixture of NAA and IBA did not have a significant impact on the cutting effect.The impact on the cutting effect was mainly reflected in the concentration of the soaking solution.With significant differences compared to other levels,the use of 1 500 mg/L had the best effect,and the average rooting rate was 91.00%,the average root length was 3.00 cm,and the average root quantity was 7.93.