杨树是我区营造速生丰产林的主要树种。在自然条件优越的农村牧区营造速生丰产林,生长快、投资少、效益高,能使广大林业专业户、重点户增加经济收入。要想营造杨树速生丰产林,必须掌握以下的栽培技术。 1、选好良种我区地域辽阔,生态环境复杂。各地应在历年杨树造林经验的基础上,选择出适合当地条件的一些优良树种(品种)。就全区范围来讲,以 Poplar is the main species of fast-growing and high-yielding forest in our district. In the pastoral areas of rural areas with superior natural conditions, fast-growing and high-yield forests are to be built with fast growth, less investment and high benefits, enabling the majority of forestry households and key households to increase their economic incomes. In order to create poplar fast growing forest, we must master the following cultivation techniques. 1, choose a good species My area is vast, complex ecological environment. All localities should select some good tree species (varieties) suitable for local conditions on the basis of the experience of poplar afforestation over the years. In terms of the region, with