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黑杨派在杨树栽培中占有重要位置,是世界中纬度地区栽培面积最大,木材产量最高的速生用材树种,它对促进木材生产起了非常重要的作用。在意大利杨树造林总面积约40万公顷,仅占全国农林用地面积的3％,而每年能生产木材400万立方米,占工业用材的三分之一。1972年我国从意大利卡萨尔杨树研究所引入黑杨派五个现代无性系,七年来的试验表明,这些无性系具有生长期长,生长快,抗性强,材质好等优良性状,目前已在江苏的淮阴、徐州等地区重点推广。现将部分试验结果报告如下。
Poplar cultivation occupies an important position in the poplar cultivation, is the world’s mid-latitude areas with the largest cultivation area, the highest timber production of rapid-growing timber species, which promote timber production plays a very important role. The total area of poplar afforestation in Italy is about 400,000 hectares, accounting for only 3% of the country’s land area for agriculture and forestry, while it can produce 4 million cubic meters of lumber annually, accounting for one-third of the industrial timber. In 1972, China introduced Populus nigra from the Poplar Institute of Casal, Italy, and sent five modern clones. Seven years of experiments show that these clones have excellent characters such as long growth period, fast growth, strong resistance and good material. Currently, Has been in Jiangsu Huaiyin, Xuzhou and other regions focus on promotion. Now part of the test results are reported below.