[Name] acer negundo linn.
[Alias] ash leaf maple
[Classification] Maple Branch (aceraceae), maple genus
[Origin] Origin North America, Northeast China, North China, Inner Mongolia, Xinjiang to the Yangtze River are cultivated.
[Form] deciduous tree, up to 20 meters. Sprig of green, hairless. Odd-pinnate, leaflets 3-7 (9), the spring germination leaflets ovate, margin irregularly toothed, ovate to oblong-lanceolate, flowers unisexual, male inflorescence corymbose, female inflorescence racemose. Fruit wings narrow, Zhang Kaicheng acute or right angles. Flowering in April, the fruit of September.
[Character] hi light, hi dry and cold climate, poor growth of warm areas, cold, drought resistance, cold and dry, mild alkali resistance, resistance to soot.
Drought, hi light, cold, dry and cold-resistant, resistant to mild alkali resistant soot.
[Use] Acer negundo straight dense branches, into the golden autumn leaves, as the Court of shade trees, street trees.
[Breeding] can be sown and grafting.
Seed propagation: seeds germinate faster negundo, no sand reservoirs. Before sowing first with about 60 ℃ warm water soaking, remove and change the next day and then soaked in cold water, changing the water once a day for four consecutive days. Samara after smoke filled the water swelling, skin soft, then remove and place it at about 25 ℃ warm underneath a layer of old sacks, sacks upper cladding layer be primed. Sprinkler once each morning and afternoon and the full flip, 4 to 5 days to issue 30% of white buds, can be planted after this time take a diluted dry surface moisture. When germination can not be stacked too thick, generally no more than 20cm, so as not to make too thick causing fever Samara rotten. Seeding rate of 5 ~ 7.5kg / acre yield seedlings amount of 10,000 / acre.
Grafting: rootstock should be _select_ed 4-5 year old slightly larger seedlings. Transplantation should bring soil lump to ensure survival. |