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虎峰实验林场从60年代初开始建立红松种子园,因管理不当而失败。1974年开始重建。1972年由伊春林区采取接穗,次年进行嫁接。1978年开始连续三年结实。一、母树生长观察红松母树从4月下旬开始生长,第一次高生长到6月下旬结束,开始二次生长,直到7月下旬结束。地径生长一直到8月上旬结束。5—6月是母树生长最快时期。因此,从5月上旬到6月上旬是母树采取农业技术措施的关键时期。(详表从略)
Hufeng experimental forest farm from the early 60s to establish the Korean pine seed orchard, failed due to improper management. Reconstruction began in 1974. In 1972 by Yichun forest scion, grafting the following year. Beginning in 1978 for three consecutive years strong. First, the growth of mother tree observation Korean pine tree trees from the beginning of April growth, the first high growth to the end of June, began secondary growth until the end of July. Ground growth until the end of early August. May-June is the fastest growing mother tree. Therefore, from early May to early June, it is a crucial period for the adoption of technical agricultural measures for mother trees. (Detailed list omitted)