施氮量对黄檗幼苗生长的影响

Effects of Nitrogen Fertilizer Rate on the growth of Corktree Seedlings

分别设置了施氮量为0、55、110、220、440 kg/hm2(尿素)的5种处理。比较了不同施氮量对黄檗幼苗生长的影响。结果表明:N20、N40、N80三个处理的株高和基茎都显著高于对照,N10处理与对照差异不显著,株高和基茎随施氮量而增加,与对照差异都达到显著或及显著,但当升高到一定程度时,不会继续升高。N20、N40、N80三个处理的根干重、茎干重和叶干重都显著高于对照,N10处理与对照差异不显著,在一定程度(施氮量范围)内,根干重、茎干重和叶干重随施氮量的增加而增加。

Five different Nitrogen Fertilizer Rate were set to the treatment Corktree Seedlings,it is 0,55,110,220,440 kg/hm2（urea） to observe the influence of them.The results show that plant height and basal stem content with N20、N40、N80 treatment are much higher compared,while no significant change with N10 treatment.Plant height and basal stem in corktree seedlings increased with the rise of nitrogen fertilizer rate until increased to a certain content,presence significant different with control.Root dry weight、stem dry weight and leaf？dry weight content with N20、N40、N80 treatment more higher compare with control,while no significant change withN10 treatment.Root dry weight、stem dry weight and leaf？dry weight in corktree seedlings increased with the rise of nitrogen fertilizer rate until increased to a certain content.