Research Article

Photosynthesis and Fine Root Growth Dynamics of Soybean in Walnut-Soybean Agroforestry System

Table 3

The competition between the root of walnut and soybean in agroforestry system.

Soil depth0–20 cm20–40 cm40–60 cm

Root density walnut75.632 ± 0.51540.735 ± 0.27317.256 ± 0.209
Soybean (cm/dm3)4317.235 ± 2.749694.317 ± 1.416601.403 ± 1.037
Competition intensity index0.637 ± 0.026A0.386 ± 0.033B0.215 ± 0.013C

The data in the table are the mean value of different treatments. The letter after data expresses Duncan’s multiple comparison results. Those data in the same column with a different letter indicate that there is a significant difference ().