种子园是繁殖良种的主要方式,是良种生产基地。种子园经营集约,管理方便,适于机械化生产。种子园生产的种子具有优良的遗传品质,生活力强。我们一九七四年嫁接的杉木种子园,一九七六年采的成果出籽率比一般母树高38%、千粒重高18%、发芽率高33%;每亩育苗的用种数量少一半以 Seed orchard is the main breeding breed, is the breeding base. Seed garden management intensive, easy management, suitable for mechanized production. Seeds produced in the seed garden have excellent genetic quality and strong vitality. In the fir seed orchard, which was grafted in 1974, the fruit-picking rate in 1976 was 38% higher than that of the common mother tree and the grain weight was 18% and the germination rate was 33%. The number of seedlings per mu was less than half To