自一九七三年开始,我院与临安县横畈公社林场协作,进行杉木种子园种子经营技术的试验。我们用全垦挖大穴,回表土,株行距5×5米,近山岗栽松树作隔离带,定植二年生大苗,第二年用自选的本省优树穗条作接穗进行嫁接。嫁接后第二年就有60%左右的母树开雌花,1976年(嫁接后第三年)开始采果,几年来,种子园种子产量连年大幅度上升,1978年横畈公社林场一带遇到百年罕见的特大旱灾,周围农作物和林木种子产量普遍下降,但种子 Since 1973, our hospital has cooperated with the HengFan Commune Farm in Lin’an County to test the seed management technology of Chinese fir seed orchard. We use the whole Ken dig large hole, back to the soil, spacing of 5 × 5 meters, nearly pines planted as isolation zone, planting biennial seedlings, the second year with the optional province superior tree spike for grafting. In the second year after grafting, about 60% of female trees began to spend female flowers. In 1976 (the third year after grafting), fruit picking started. In recent years, the output of seed orchard increased sharply in recent years. In 1978, Rare exceptionally large droughts, widespread declines in the output of surrounding crops and tree seeds, but seeds