圣诞树育苗试验结果分析

切根及喷云大- 120 促进圣诞树苗木生长的试验结果表明: 切根处理对圣诞树苗木地下部分生长具一定的促进作用; 喷云大- 120 则能促进其地上部分的生长; 切根及喷云大-120 处理对圣诞树苗期生长的影响, 主要表现在苗高、冠幅、根幅、单株根鲜重及主根发育状况5 个性状上。各个处理以不切根喷云大- 120 处理的效果较好。其苗高、地径、冠幅、单株茎叶鲜重、侧枝数、根长和根幅等性状分别比对照提高17-35% 、5-26% 、35-92% 、36-02 % 、775-00% 、8-00 % 和3-35 % , 仅单株的侧根数及根鲜重的均值与对照相比下降0-33% 和5-71% 。

Preliminary Analysis on the Experiment of Acacia delbata Cultivation

The experiment of root cutting and spraying BR-120 to Acacia delbata shows cutting roots can promote growth of the parts under ground,while spraying BR-120 can improve the growth of the parts above ground.The effect on the growth of seedlings by cutting roots and spraying BR-120 lays mainly in 5 characters, namely height, canopy, root range, and fresh weight of roots and development of main roots.In various treatments, spraying BR-120 without cutting shows the best effect,in witch the height,ground diameter,canopy,fresh weight of leaf and stem,number of lateral branches,length and range of the roots are 17 35%,5 26%,35 92%,36 02%,775 00%,8 00%and 3 35% higher than those of the control.However,the average value of the number of lateral roots and fresh weight of roots are 0 33% and 5 71% lower than those of the control.