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杉木不同地理种源具有不同的生产能力,在近几年的试验中已初步显示出这种特性。根据国内外种源试验的资料记载,其经济效益相当于初级种子园。为了提高杉木的生产能力,选择适合河南造林用的杉木优良种源,探索各种源间的地理变异规律,在全国协作组和中国林科院林研所的统一布置与指导下,从1980年起于豫南的罗山董寨、光山九九、商城金岗台三
Different geographic provenances of Cunninghamia lanceolata have different productivity, which has been initially shown in experiments in recent years. According to domestic and foreign provenance test data records, the economic benefits equivalent to the primary seed orchard. In order to improve the productivity of Chinese fir plantation, we selected the best provenances for Chinese fir plantation in Henan Province and explored the rules of geographical variation among various sources. Under the unified arrangement and guidance of the National Cooperative Team and the Chinese Forestry Research Institute of Forestry, from 1980 Starting from the south of Luoshan Dongzhai, Guangshan nine nine, Mall King Kong three