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在中央永定河流域造林计划座谈会舆河北省永定河流域林业会议上,确完了平原以沙荒防风林舆沿河防洪林为造林重点的方针,是完全正确和十分必要的。五○年大興縣三季造林二百八十六尤棵,每棵按平均生长率一斤估计,总计增长木
At the Yongding River Basin Forestry Meeting held in Central Yongding River Basin Afforestation Program, it was absolutely correct and necessary to finish the principle of using plain deserted windbreaks and flood control forests along the river as afforestation key points in the plain. Two hundred and eighty years Daxing County, two-season afforestation two hundred eighty-six, each according to the average growth rate of a pound of estimates, a total growth of wood