Table 6.

Differences in endogenous hormones in leaves 25 days after nitrogen deficiency and compensation (September 19) in double-cropping super hybrid late rice in 2015.

Treatments	ABA (ng g-1 FW)	GA3 (ng g-1 FW)	IAA (ng g-1 FW)	ZR (ng g-1 FW)	(GA3 + IAA + ZR)/ABA
CK0	91.71a	9.45c	35.09c	10.22a	0.60d
CK1	94.84a	11.30a	46.89b	10.07a	0.72c
CK2	74.43c	11.91a	45.29b	9.23b	0.89b
T1	79.87b	12.12a	67.57a	9.04b	1.11a

CK0, N fertilizer was not supplied during all stages of growth (blank control); CK1, constant supply of N throughout different stages of growth; CK2, constant N compensation at young panicle differentiation stage, after N deficiency at tillering stage; T1, double N compensation at young panicle differentiation stage, after N deficiency at tillering stage. In 2015, values in the same column show mean via the Tukey’s multiple range test, and different letters indicate that the means were statistically different (P < 0.05), n = 4. Data are averages observed for the study year of 2015 (n = 3, 1 year × 3 replicates)