Table 3. Effects of different treatments on nitrogen translocation after anthesis from vegetative organs to grain.

Year	Treatments	Fitting equation of grain nitrogen filling	R2	Vmax	Vmean	D
2016	N1	y = 1.066/(1 + 17.876e−0.179x)	0.997	0.048a	0.030b	33.499b
	N2	y = 1.065/(1 + 20.300e−0.178x)	0.995	0.047a	0.030b	33.636b
	N3	y = 1.139/(1 + 17.673e−0.171x)	0.996	0.049a	0.032a	35.116a
	N4	y = 1.042/(1 + 15.842e−0.179x)	0.996	0.047a	0.029b	33.515b
	N5	y = 0.991/(1 + 15.792e−0.185x)	0.992	0.046a	0.027c	32.473b
2017	N1	y = 0.891/(1 + 14.568e−0.199x)	0.994	0.044a	0.025b	30.189b
	N2	y = 0.951/(1 + 18.322e−0.198x)	0.995	0.047a	0.026b	30.341b
	N3	y = 1.005/(1 + 16.431e−0.192x)	0.997	0.048a	0.028a	31.235a
	N4	y = 0.918/(1 + 18.266e−0.195x)	0.992	0.045a	0.025b	30.719b
	N5	y = 0.883/(1 + 19.249e−0.200x)	0.991	0.044a	0.024b	30.032b

Notes.

*, ** significant at the 0.05 and 0.01 probability levels, respectively, ns, no significant. Each data point represents the average of the measured data.

Vmax

the maximum accumulation rate

Vmean

the average accumulation rate

D

the active accumulation period