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以金叶杨、全红杨、毛白杨、红叶杨、107杨、108杨、214杨为试材,通过硬枝扦插繁殖,研究分析了不同品种扦插苗一级根长、二级根数、根鲜重、根干重、比根长、根系活力、萌芽率、新梢长等8项生长指标变化,比较不同杨树品种在容器育苗扦插繁殖中的生长特性。结果表明:7个杨树品种中红叶杨生长最好,表现出植株地上部分、地下部分和植株综合生长特性均最好,其中,一级根最长、二级根数最多、根干重和根鲜重最高、萌芽率最高;其次为214杨,表现出植株地上部分生长并列最高、地下部分和植株综合生长特性较好,其中,一级根最长、二级根数较多、比根长最高、萌芽率较高、新梢生长量最大。全红杨、毛白杨、108杨、107杨生长中等,其中,全红杨二级根数最多、一级根较长;毛白杨一级根较长、根系活力最强;108杨一级根较长、根鲜重较高、根系活力较强;107杨的地上部分生长较好、二级根数量较多,比根长较大。金叶杨生长最差,表现出植株地上部分、地下部分和植株综合生长特性均最差,其中,二级根数最低、根干重和根鲜重较低、新梢生长量较低。总之,容器育苗扦插繁殖中红叶杨和214杨的苗木质量最好。
Populus trichocarpa, Populus tomentosa, Populus tomentosa, Populus trichocarpa, 107 Yang, 108 Yang, 214 Yang as the test material, hardwood cutting propagation, research and analysis of different varieties of cuttings first root length, secondary root number, Root fresh weight, root dry weight, root length, root activity, germination rate, shoot length and other eight growth indicators were compared to compare the growth characteristics of different poplar varieties in container cutting and propagation. The results showed that Populus trichocarpa grew the best in seven poplar varieties, showing the best growth characteristics in the aboveground part, underground part and plant. Among them, the longest root length, the second root length, the root dry weight and The highest root fresh weight and the highest germination rate; the second was 214 poplars, which showed that the aboveground part of the plant was the highest and the underground part and the plant had the best overall growth characteristics. Among them, the first root was the longest, the second root was more, The highest length, high germination rate, the maximum growth of shoots. Populus tomentosa, Populus tomentosa, Populus 108, 107 poplar growth medium, of which, the whole lotus root second largest, the first root longer; the first root longer, root vitality strongest; 108 first root Longer root weight, higher root vigor, stronger root activity; 107 Yang on the ground part of the growth is better, more secondary root, larger than the root length. Golden leaf was the worst growth, showing that the plant aboveground parts, underground parts and plant growth characteristics were the worst, of which the lowest level two roots, root dry weight and root fresh weight is low, shoot growth is low. In a word, the best quality of the seedlings of Caragana and2.