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自1972年我国从意大利引进Ⅰ-69、Ⅰ-72和Ⅰ-63杨以来,在亚热带、南暖温带地区表现了其速生性状,从而在长江中下游、江汉平原及黄淮海平原的南部获得大面积推广。为使安徽省杨树发展走在世界的前列,提高杨树造林技术水平,充分发挥欧美杨生产力,课题组在贵池市灌口乡进行了多系混合造林试验。1.试验地概况试验林位于安徽省贵池市灌口乡黄金坡林场。年均温度16.1℃,年雨量1530毫米,海拔19米,三面环山,为秋浦河冲
Since the introduction of I-69, I-72 and I-63 from Italy in 1972, China has shown its fast-growing traits in the subtropical and southern warm temperate regions, and thus obtained large and medium-sized natural populations in the middle and lower reaches of the Yangtze River, the Jianghan Plain and the Huang-Huai- Area promotion. In order to make the development of poplar in Anhui Province at the forefront of the world, raise the level of poplar afforestation technology, and give full play to the poplar productivity in Europe and America, the research team conducted a multi-line mixed afforestation experiment in Guankou Township, Guichi City. 1. Experimental Overview The experimental forest is located in Guiqiu Township, Guichi, Anhui Province. Average annual temperature of 16.1 ℃, annual rainfall of 1530 mm, 19 meters above sea level, surrounded by mountains on three sides,