Influence of Controlled Drainage on the Groundwater Nitrogen and Phosphorus Concentration at Jointing-Booting Stage of Wheat

Table 3

MANOVA results for the change of concentration of TP, -N, and -N.

MANOVA results ( values)	TP	-N	-N
Submergence time	0.073 ns	0.008	0.028
Drainage depth	0.092 ns	0.000	0.002
Submergence time × drainage depth	0.000	0.354 ns	0.000

Note: the values of TP, -N, and -N concentration are means of 3 replications. Significant differences for submergence duration, drainage depth, and submergence duration × drainage depth are indicated with asterisks () for ; ns: not significant.