RESOURCE OF WILD ORNAMENTAL PLANTS IN THREE-RIVER PLAIN

Three-river Plain, the key agriculture and animal husbandry developing region of China is located in the northeast part of Heilongjiang province. There were rich resources of wild ornamental plants in Three-river Plain. 134 species of those were investigated belonging to 54 families. 35 were woody plants and 99 herbaceous. The domestication and cultivation of several plants with high decorative value were studied and briefed as follows: (1) Vibrunnum sargenti Koehne propagates by seeds beginning to blossom in 3 years and by rhizome. The plants grown in the plain are subject to insect pests: (2) Sambucus buergeriana Blume propagates by seeds after sand cultivation for 4-6 months and begins to blossom in the next year; (3) Acanthopanax Senticocus (tupr. et (maxim) harmes propagates by seeds, shoot layering and root cutting. The germination of seeds is lower and the shoot layering is best. It grows slowly in the white clay soil, (4) Hemerocallis midendorffii Tranty. et Mey, propagates by seeds and suckers and blossoms in the next year, growing well in the plain; (5) Ostrich fern (Matteuccia struthiopteris (L.) Todaro) propagates by spore. The spore grows to sporophyte in 70-90 days after sowing and the sporophyte grows to sporophyll in 4 years.