云南地处高原地区,山多林密,少数民族聚居,经济发展水平落后于内地。不仅在解放前,甚至在五、六十年代,在许多地区仍保留着刀耕火种农业。刀耕火种农业是农业史上值得重视的问题,我在五、六十年代进行民族调查时常遇到此问题,惜未深入系统调查。现将当时搜集的资料初作综合。在综合时也使用 Yunnan is located in the plateau area, mountainous and more densely populated, minority nationalities, the level of economic development behind the Mainland. The slash-and-burn agriculture remained in many regions not only before liberation but even in the 1950s and 1960s. Slashing and burning agriculture is a problem that deserves our attention in the history of agriculture. I often encountered this problem when conducting ethnic surveys in the 1950s and 1960s, but I did not go deep into the system investigation. The information collected at that time was first integrated. Also used in synthesis