Table 4. Correlation coefficients between soil water storage at different depths and proline content in anthesis.

Soil depth	Flag leaves	Grains
20	−0.4820	−0.5408
40	−0.6424	−0.8550*
60	−0.4059	−0.7612*
80	−0.5719	−0.8299*
100	−0.5087	−0.8225*
0–100	−0.5647	−0.8224 *
120	−0.5935	−0.8182*
140	−0.6591	−0.8494*
160	−0.4522	−0.7615*
180	−0.4847	−0.7504
200	−0.4081	−0.7268
100–200	−0.5212	−0.7909 *
220	−0.7360	−0.7367
240	−0.6631	−0.6878
260	−0.6207	−0.5995
280	−0.6702	−0.5518
300	−0.6296	−0.6225
200–300	−0.6660	−0.6363

^*P<0.05.