关键词: 杉木种子园, 高产稳产

Abstract: According to the researches by the writer since 1983, relative data of 26 Chinese fir seed orchards throughout the country and scientific reports of other members of the high and stable yield cooperative research group of Chinese fir seed orchard in Zhejiang Province, discussion is made on selections of seed orchard site, genetic material and density of stocks and managing techniques before and after fruitage in this paper.The best site is the ordinary production region of this species, where there is not too much rainfall in pollination and frost damage in winter and where the sunny gentle-sloped low hill, well iso lated conditions, deep and mid-fertile soil, suitable moisture and well water drainage must be considered. The clones which have fruitage capacity above middle level and high genetic gains with the match of anthesis should be selected as the genetic materials. The density of stocks should be proper. It is necessary to concentrate on keeping high percentage of survival and straight stem of graft trees, and develop wide and light-penetrative crown by soil mana gement and make proper branch-cutting before fruitage. And pay much attention to soil and pollen management, thinning in time and controlling insects and diseases after fruitage. The seed orchard should be regenereted and reformed in time when the seed yield highly degenarate.

Key words: Chinese fir seed orchard, High and stable yield