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遵照伟大领袖毛主席“绿化祖国”,“实行大地园林化”,“人类总得不断地总结经验,育所发现,有所发明,有所创造,有所前进”,一系列的教导,1963年——1965年由云南省林业科学研究所、红河州石岩寨林场、开远县白土墙林场组成研究组,对开远、蒙自低海拔地带的造林成活率进行了试验研究。开远、蒙自低海拨地带(1500米以下),气候炎热、降雨量少,属于热河谷气候类型,这一地带大都是荒山,水土流失严重,岩石裸露,土壤瘠薄。在我省南亚热带以及准热带类似的地区具有代表性。解放以后,党和政府很重视这一带地区的造林工作,先后成立了造林队、国营林场,组织了大量人力进行造林(主要造林林种为云南松),但
Following the series of teachings of Mao Zedong, the great leader Chairman Mao’s “Greening the Motherland,” “Implementing the Grand Garden,” “The Mankind Has to Constantly Summarize Experiences, Find Out, Have Some Inventions, Have Something to Create, and Make Some Progress,” 1963 - - In 1965, a research group consisting of Yunnan Forestry Research Institute, Shiyanzhai Forest Farm of Honghe Prefecture and Baituqibian Forest Farm of Kaiyuan County was conducted to study the survival rate of afforestation in Kaiyuan and Mengzi low altitude areas. Kaiyuan, Mengzi low altitude zone (1500 meters below), the climate is hot, less rainfall, belongs to the thermal valley climate type, this area is mostly barren hills, soil erosion, rock bare, barren soil. In the province of South Asia tropical and semi-tropical similar areas representative. After the liberation, the party and the government attached great importance to the afforestation work in this area. The afforestation team and state-owned forest farms were successively established and a large amount of manpower was involved in afforestation (the main afforestation species was Pinus yunnanensis). However,