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一九八四年七月,全国马尾松良种选育协作组在广西南宁举行了年会。根据四年生试验林多点试验表型材料的数学聚类分析结果,并经过氧化物酶同功酶的测定,初步把我国马尾松地理种源划分为“三带六区”。即:北带;中带东区;中带中区;中带西区;中带四川特区;南带东区;南带西区。并初步筛选出优良种源共41个。其中贵州松桃、贵州黄平、贵州都匀和贵州德江四个马尾松优良种源,被划分属于中带西区。
In July 1984, the National Masson Pine Breeding and Breeding Cooperation Group held its annual meeting in Nanning, Guangxi. According to the results of mathematical clustering analysis of phenotypic materials in the multi-point experiment of four-year-old experimental forests and the determination of oxidase isozymes, the geographical provenance of masson pine in China was divided into three zones and six districts. Namely: North Belt; Middle East Belt; Middle Belt Central Belt; West Belt Central Belt Sichuan Special Region; South Belt Eastern Belt; South Belt West Belt. And initially screened a total of 41 excellent provenances. Among them, four provenances of Pinus massoniana in Guizhou, such as Songtao of Guizhou, Huangping of Guizhou, Duyun of Guizhou and Dejiang of Guizhou, were classified as belonged to the west of Zhongzhong.