罗汉松培育绿化大苗移栽试验

Transplanting Cultivation Experiment of Greening Seedlings of Podocarpus macrophyllus

试验对罗汉松裸根小苗根系采用黄泥浆+1%钙镁磷肥蘸根(处理A)、黄泥浆+生根剂5 000倍液蘸根处理(处理B)、黄泥浆+1%钙镁磷肥+生根剂5 000倍液蘸根(处理C)、不蘸黄泥浆(处理D)4种处理进行移栽对比试验,结果表明:C处理采用黄泥浆+1%钙镁磷肥+NAA生根剂,有利于促进裸根苗根系生长,移栽成活率最高,达98.0%,且以混合使用效果更好。而根系未经采取任何措施的D处理,移栽成活率较低,仅为65.3%。经方差分析及多重比较:C处理与其它3个处理间移栽成活率达极显著水平,A处理、B处理均与D处理之间移栽成活率差异达极显著水平;A处理与B处理间移栽成活率无显著差异。不同处理间高径生长从高到低依序均为C>B>A>D,A、B、C处理苗木平均高比D处理分别增加了64.3%、74.6%和89.4%,地径生长分别增加了73.5%、67.6%和79.4%。C处理根系生长最好,主根生长粗壮,侧根数量多;经过1年的移栽能够产生较多有一定粗度、发育程度较高的侧根。罗汉松移栽是培育绿化大苗的重要环节,移栽处理以黄泥浆+1%钙镁磷肥+生根剂(奈乙酸NAA)5 000倍液蘸根处理为好。

The contradistinctive transplanting experiments were made on root bare-root seedlings of Podocarpus macrophyUus with 4 kinds of treatments that yellow mud ＋1% calcium magnesium phosphate dipping root （A）, 5 000 times liquid dipping root treatment of yellow mud ＋ rooting agent （B）, yellow mud ＋1% calcium magnesium phosphate and rooting agent 5 000 times liquid dipping root （C）, not dipped in yellow mud （D）. The results showed that： C treatment by the yellow mud ＋1% calcium magnesium phosphate ＋NAA rooting agent, was conducive to the promotion of bare root seedling＇s root growth, the transplanting survival rate was the highest, up to 98%, and the better effect using mixed. But the root without any measures of D treatment, the survival rate is low, only 65.3%. Through analysis of variance and multiple comparisons： transplanting survival rate between C treatment and the other 3 treatments reached extremely significant level of difference, transplanting survival rate between the A treatment, B treatment and D treatment reached extremely significant level; the transplanting survival rate between the A treatment and B treatment had no significant difference. The height and diameter growth order among the different treatments from high to low were C〉B〉A〉D. The seedling average heights of A, B, C treatment were increased 64.3%, 74.6% and 89.4% than D treatment, respectively; and the growth of diameter were increased 73.5%, 67.6% and 79.4% than D treatment, respectively. The root growth of C treatment was the best, big-root grew robust, with large lateral root; after transplanting 1 years can produce more lateral roots with certain roughness, a high degree of development. Transplanting of P. macrophyllus was an important link of cultivating green seedlings, transplanting treatment with yellow mud ＋1% calcium magnesium phosphate and rooting agent （NAA） 5 000 times liquid dipping root was better.