| 1 | Canna generalis Bailey in the wetland slot grew better than those in the floating bed. | |
| 2 | Results showed that the sequence of inhibition effect of three plants was Acorus calamus, orris and canna. | |
| 3 | The characters of red pigment form canna flower were studied in this paper. | |
| 4 | The observation showed Canna generalis Bailey and Cyperus alternifolius L. grew well in the floating bed in winter; | |
| 5 | A new domestic sewage treatment system was studied, which consisted of circled-flow and floating-floor soilless cultured Cannas generalia. |