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落叶松种子供不应求,阻碍了造林事业的发展.为了培育林木良种,我场在2万多亩落叶松用材林中,选出2千亩改建成种子林,取得了较好的效果.主要措施是:1.选好改建区
In order to cultivate forest seed, I field more than 2 acres of larch timber forest, selected 2 acres converted into seed forest, and achieved good results. The main measures are: 1. Select the remodeling area