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当前,我国杨树育种研究紧紧围绕工业用材林、生态工程林两大体系建设开展,使我国杨树人工林的定向培育研究得以低成本高效实现。本试验采伐了2002年营建的林纸
At present, researches on poplar breeding in our country focus on the construction of two major systems of commercial timber plantation and ecological engineering forest, so that the directional cultivation of poplar plantation in China can be realized with low cost and high efficiency. This experiment logs the forestry paper that was built in 2002