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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% 。
Cut root and spray cloud big - 120 to promote the growth of Christmas tree seedlings test results show that: cutting root treatment of the growth of underground parts of Christmas tree seedlings have a certain role in promoting; spray cloud large - 120 can promote the growth of its aboveground; The effects of Yun-Da-120 treatment on the growth of Christmas tree seedlings were mainly manifested in five traits of seedling height, crown width, root width, fresh weight per plant and development of main roots. Each treatment to not cut root spray cloud - 120 treatment is better. The seedling height, diameter, crown width, fresh weight of stems and leaves, number of lateral branches, root length and root width increased by 17-35%, 5-26%, 35-92% and 36-02% , 775-00%, 8-00% and 3-35% respectively. The average number of lateral roots and root fresh weight per plant decreased by 0-33% and 5-71% compared with the control.