Table 4 Relationship between NNI and Na in spring maize grown in Sichuan, 2011–2015.
From: Construction of a critical nitrogen dilution curve for maize in Southwest China
Cultivar | Stages | Equation parameters | Nt (NNI = 1) g·kg−1 | |||
|---|---|---|---|---|---|---|
a | b | R2 | P | |||
ZH 311 | Jointing stage | 1.8593 | 26.3535 | 0.9896 | 0.0001 | 28.2128 |
Bell-mouth stage | 4.9209 | 13.9771 | 0.9597 | 0.0001 | 18.8980 | |
Silking stage | 3.6424 | 12.2915 | 0.9193 | 0.0001 | 15.9339 | |
Filling stage | 4.9811 | 8.3991 | 0.9502 | 0.0002 | 13.3802 | |
Maturity stage | 2.7534 | 9.3924 | 0.8884 | 0.0001 | 12.1458 | |
XY 508 | Jointing stage | 1.6204 | 27.4420 | 0.9784 | 0.0001 | 29.0624 |
Bell-mouth stage | 4.0430 | 15.5895 | 0.9636 | 0.0001 | 19.6325 | |
Silking stage | 4.7279 | 11.7615 | 0.8686 | 0.0001 | 16.4894 | |
Filling stage | 4.6722 | 8.6847 | 0.9652 | 0.0001 | 13.3569 | |
Maturity stage | 3.1772 | 9.3720 | 0.8762 | 0.0001 | 12.5492 | |
