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杨树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之一,具有生长快、成材早、用途广、易于更新的特点,是最适合短轮伐期工业用材经营的树种,已被我国大部分地区
Poplar is one of the fast-growing timber species with the largest cultivated area and the highest lumber output in the mid-latitude regions in the world. It has the characteristics of rapid growth, early harvest, wide application and easy renewal. It is the most suitable species for management of short-rotation industrial timber. Most of our country