an increasing trendp < 0.05
There was no significant difference in the PT at the 5–15% addition level ( p < 0.05), but it showed an increasing trend at the 20–30% level ( p < 0.05).
There was no significant difference in the PT at the 5–15% addition level ( p < 0.05), but it showed an increasing trend at the 20–30% level ( p < 0.05).
Therefore, with the increasing addition of ERF, the PV and TV showed a decreasing trend.