为了解取穗部位和插穗规格对树参扦插生根效果的影响，以无病虫害且生长健壮的当年树参硬枝为试验材料，开展了不同取穗部位(上部、中部、下部)、插穗长度(7～10、11～15、16～20 cm)和插穗粗度(0。2～0。4、0。4～0。7、0。7～1。0 cm)的硬枝扦插试验。结果表明:上部插穗效果最优，生根率为94。0％，≥5 cm Ⅰ级侧根数7。8条，抽梢率98。3％;中部插穗的效果次之;下部插穗的效果最差。插穗长度以11～15 cm效果最优，生根率为92。7％，≥5 cmⅠ级侧根数7。0条，抽梢率98。0％;7～10 cm插穗的效果次之;16～20 cm插穗的效果最差。插穗粗度以0。7～1。0 cm最优，生根率为93。3％，≥5 cm Ⅰ级侧根数6。8条，抽梢率为98。7％;0。4～0。7 cm粗度的效果次之;0。2～0。4 cm粗度的效果最差。
The Influence of Cutting Position and Cutting Specification on the Rooting Effect of Dendropanax dentiger Cutting
In order to understand the influence of cutting position and cutting specification on the rooting effect of Dendropanax dentigercutting,by using hardwoods of Dendropanax dentigerfrom the same year with disease-free and robust as the experimental materials,the hardwoods cutting trials of different cutting positions(upper,middle,lower),different cutting lengths(7-10 cm,11-15 cm,16-20 cm),and different cutting thicknesses(0.2-0.4 cm,0.4-0.7 cm,0.7-1.0 cm)were carried out.The results showed as follows:the effect of the upper cuttings was the best with a rooting rate of 94.0％,Grade Ⅰ lateral roots were 7.8 with a diameter≥ 5 cm and a shooting rate of 98.3％;the effect of middle cuttings was slightly inferior,while the effect of lower cuttings was the worst.The optimal length of cuttings was 11-15cm,with a rooting rate of 92.7％,Grad Ⅰ lateral roots were 7.0 with a diame-ter 5 cm,and a shooting rate of 98.0％;the effect of 7-10 cm cuttings was slightly inferior,while the effect of 16-20cm cuttings was the worst.The optimal thickness of cuttings was 0.7-1.0 cm,with a rooting rate of 93.3％,Grade Ⅰ lateral roots were 6.8 with a diameter 5 cm,and a shooting rate of 98.7％.The effect of 0.4-0.7cm thickness was slightly inferior,while the effect of 0.2-0.4 cm thickness was the worst.
万方数据
维普
