| The effect of plant high active agent with concentrations of 2, 5, 10, 15, 20 mg/L on the growth of vetiver in seedling stage and growth period were studied. The results showed that the plant high active agent could promote the growth of vetiverboth in seedling stage and growth period. Treated at seedling stage had higher height and more tillers and biomass, treated at growth period had higher net photosynthetic rate, transpiration rate and WUE value. The result indicated that vetiver had the best growth when it was treated by 20 mg/L plant high active agent in seedling stage. |
