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(一)思茅松是我省的主要用材树种。原分布于思茅、临沦地区的阿墨江、把边江流域、澜沦江中下游及南定河上游。近10年来我省多数专州都先后引种,每年造林面积达数十万亩,为我省主要造林树种之一。但目前对各地引种成效调查还很不够,各地引种后反映也不相同。为了给今后的引种工作提供参考,特进行引种成效调查。这次大理地区的调查即为此项工作的一部份。调查方法是分别造林方法、立地条件选择有代表性的地段或在原对比试验地中
(A) Simao pine is the main timber species in our province. The original distribution in Simao, Linjiang area A Mojiang, the river basin, the middle and lower reaches of Lanjiang River and the upper reaches of the South Dinghe. In the past 10 years, most prefectures in our province have successively introduced species. The annual afforestation area amounts to several hundred thousand mu, which is one of the major afforestation species in our province. However, the current results of the introduction of the survey is still not enough around the introduction after the introduction is not the same. In order to provide a reference for the future introduction of work, special introduction of the effectiveness of the survey. The survey in Dali is part of this work. The survey methods are afforestation methods, site selection of the representative conditions of the site or in the original comparative test site