highly significantp < 0.01
After screening, the correlations between the randomly combined texture indices and the SMC at different soil layers under soybean cultivation all reached a highly significant level ( p < 0.01).
After screening, the correlations between the randomly combined texture indices and the SMC at different soil layers under soybean cultivation all reached a highly significant level ( p < 0.01).
The correlation of the thermal-infrared indices constructed at different soil layers under soybean cultivation with SMC showed a trend of 0~20 cm > 20~40 cm > 40~60 cm. 3.4.