我国经济林建设进入新的发展阶段陈蓬改革开放以来，我国经济林生产进入了一个新的发展阶段，全国平均每年营造经济林面积超过１１００万亩，１９７９—１９９２年，全国共营造经济林１．５３亿亩，约占全国人工造林总面积的１５％，其中山东、河北、山西、湖北等省，每年... Since the reform and opening up, the economic forest production in our country has entered a new stage of development. The average area of ​​economic forest in China is more than 11 million mu per year. From 1979 to 1992, a total of 153 million mu of economic forests were built nationwide , Accounting for about 15% of the total area afforestation in China, including Shandong, Hebei, Shanxi, Hubei and other provinces, each year ...