论文部分内容阅读
意大利45杨于1976年引进我省,十余年来,通过苗期测试,品种比较,生产中试等表现出繁殖容易、栽培易活、适应性广等优良特性,尤以其速生和干直而著称。该品种明显地好于当前推广的沙兰杨,已成为我省今后发展速生丰产林和四旁植树的优良杨树新品种。目前在辽阳、锦州、庄河等地栽植约150平方千米,深受当地群众所喜爱。意大利45杨为雄株无性系。树干通直,树皮褐色,树冠长卵形。叶为浅心形,深绿色,幼树叶甚大。在我省4月中、下旬萌芽,9月上、中旬封顶,10月下旬落叶。
Italy 45 Yang introduced to our province in 1976, more than 10 years, through the seedling test, variety comparison, production pilot test showed easy reproduction, easy to live cultivation, wide adaptability and other fine features, especially its fast-growing and dry Known The variety is obviously better than the current promotion of Sallam, has become the province in the future the development of fast-growing high-yield forest and planting trees around the good new poplar varieties. Currently in Liaoyang, Jinzhou, Zhuanghe and other places planted about 150 square kilometers, loved by the local people. Italy 45 male male clones. Trunk straight, bark brown, crown long oval. Leaves shallow heart-shaped, dark green, young leaves great. In our province in mid-April, germination in late, September, mid-cap, late October leaves.