马尾松母树林营建技术及结实特性研究

通过对马尾松母树林７ａ的观测资料分析表明：（１）马尾松花期为１０￣１５ｄ，雌雄球花的散粉期与受粉期大致同步。（２）球果及种子产量与雌球花数正相关，与雄球花数相关性不显著；（３）建立母树林可从幼林期开始疏伐，７年生时密度每公顷保留３３０株左右为宜；（４）７年生时开花结实株率达８０％以上，母树结果较多的部位为中下冠层的东南方向，占６０％以上，１０年生母树林每公顷可产种６．７ｋｇ。

Study on Establishment Technology and Seed Setting Habit of Pinus massoniana Seed Stand

The successive 7 year observation on seed setting habit for Pinus massoniana seed stand was carried out,results show: (1)Flowering period ranged from 10 to 15 days,but the flowering period of male and female strobilus are overlapped; (2)There is a positive relationship between cone and seed production and female strobilus production, but no obvious relationship between the seed production and the amount of male strobilus production; (3)Seed stand at the beginning of establishment can be thinned,it is optimal that stand density at the age of 7 years old is 330 trees per hm 2; (4)More than 80% of the trees in the seed stand bear female and male strobili at the age of 7 years old,80% of the male and female strobili are mainly borne facing the southeast in the middle and lower part of crown,8.7 kg seeds can be produced per hm 2 at the age of 10 years old.