论文部分内容阅读
北美鹅掌楸属木兰科,别名马褂木,落叶乔木。原产北美大陆,我国北京及华东地区均有引进栽植。北美鹅掌楸生长迅速,树干通直,叶形奇特,花如郁金香,是优美的园林绿化树种和良好的用材树种。北美鹅掌楸为中性偏阴树种。耐寒,喜温暖湿润气候,常散生于土层深厚、腐殖质丰富的山谷、坡地,在PH值4.5—6.5的酸性或微酸性土壤上生长良好。育苗技术可采用播种育苗和扦插育苗两种方法。1.播种育苗。选择避风向阳,土层深厚肥沃,灌溉方便,排水良好的沙质壤土作为育苗地。秋末冬初进行深翻,翌年春季结合整地施足低肥。苗床多采用高床,方向为东
North American Liriodendron Magnoliaceae, alias Liriodendron, deciduous tree. Native North American mainland, China and Beijing in east China have introduced. Liriodendron chinense growing rapidly, straight trunk, leaves strange, flowers such as tulips, is a beautiful landscaping species and good timber species. Liriodendron chinense is a neutral, overcast species. Hardy, hi warm and humid climate, often scattered in deep soil, humus-rich valleys, slopes, pH 4.5-6.5 acidic or slightly acidic soil growth well. Seedling technology can be sowing seedlings and cutting seedlings two ways. 1. sow seedlings. Choose sheltered sunny, deep and fertile soil, easy irrigation, well-drained sandy loam as nursery. Autumn late winter early deep turning, the following spring combined with site preparation enough low fat. More beds with high beds, the direction of the East