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杉木不同无性系的结果量、球果生物学性状和环境因子对出籽率和饱粒率的影响已被观察。高出籽率与果型和果的大小无关，而与可育种鳞数、种子数和千粒重有关。良好光照和充分授粉能提高出籽率和饱粒率，减少空瘪涩粒。１１月中旬采收的球果较之１０月中下旬的出籽率和千粒重增加。１９９５年，横畈杉木１．５代１０年生种子园获得丰收，球果出籽率为６．２％，饱粒率达６２．０％。
The effects of different clonal numbers, coniferous biological traits and environmental factors on the seed-setting rate and grain-filling rate have been observed. High seed rate has nothing to do with the size of fruit and fruit, but with fertile breeding scale, the number of seeds and grain weight related. Good light and adequate pollination can increase the seed-out rate and full-grain rate, reduce empty shriveled astringent grain. The cones harvested in mid-November were higher in seed yield and 1000-grain weight than in late-mid-October. In 1995, 1.5 years of cross-flowering Chinese fir fir 10-year-old seed orchard access to biodiesel seed yield was 6.2%, grain-filling rate of 62.0%.