Table 6. The correlation coefficient (r) between container types and nitrogen status of three species seedlings in nursery.

Species	Container variables	Concentration			Mass-weighted concentration	Content
		Root	Shoot	Leaf	Seedling	Seedling
Q. serrata	Density	NS	NS	0.38*	NS	NS
	Volume	NS	0.30*	0.30*	NS	0.35*
F. rhynchophylla	Density	NS	NS	NS	NS	-0.55*
	Volume	NS	NS	NS	NS	0.41**
Z. serrata	Density	NS	NS	NS	NS	0.35*
	Volume	NS	NS	0.29*	NS	0.55***

P≤0.05,
P≤0.01,
P≤0.001 and NS (non-significance) = P>0.05.