ANOVA, analysis of variance. *P<0.05. **P<0.01. A two-factor interaction analysis showed that the pH values and CaCl2 concentrations both had significant effects on the germination rate, germination potential and germination index ofD. glomerata, L. perenne and M. sativa. The treatments of pH and CaCl2 had a significant interaction on the germination rate, germination potential, and germination index ofD. glomerata and M. sativa. There was an interaction between pH and CaCl2 treatment on the germination potential of L. perenne (Table 2).Table 3. Bud lengths of D. glomerata, L. perenne, and M. sativa seedlings under the interaction of pH and CaCl2