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在樟子松种子园中，对母树进行修剪、授粉等促进母树结实的试验，结果表明，中度修剪平均单株雌球花数量比对照增加１３ ．３７ ％ ， 单株球果数增加１４ ．３０ ％ ，空种子占成种子比例减少了２ ．２４ ％ ；强度修剪平均单株种子产量下降了２７ ．０２ ％ ，空种子占成种子比例减少了３ ．４８ ％ 。母树开花期间，进行人工辅助授粉１ 次和３ 次，平均单株种子产量分别为对照的１４５ ．１２ ％ 和１７１ ．９５ ％ 。喷施５０ ｍ ｇ／ ｋｇ 的赤霉素药液，平均雌花数量比对照增加２０ ．９８ ％ ，平均单株种子产量提高７ ．１３ ％ 。
In Pinus sylvestris var. Mongolica, pruning and pollination of the female tree were conducted to promote the fruiting of the female tree. The results showed that the average number of female flowers in the medium pruning increased by 13% compared with the control. 37%, the number of per plant increased by 14. 30%, reduce the proportion of empty seeds into seeds 2. 24%; the intensity of the average single seed yield pruning decreased by 27. 02%, the proportion of empty seeds in the seeds decreased by 3%. 48%. During the flowering period of mother trees, the artificial pollination was conducted once and three times with the average seed yield per plant as 145. 12% and 171. 95%. Sprayed with 50 g g / kg gibberellin solution, the average number of female flowers increased by 20 compared with the control. 98%, the average single seed yield increased by 7. 13%.