strobilus

Analysis on the variation of female-male flowers and strobilus production of clonal seed orchard of Pinus tabulaeformis carr.

油松无性系种子园雌雄球花量及球果量变异分析。

The probability of any air-borne pollen grain impacting a female strobilus is in any case very small.

任何在空气中飘浮的花粉粒粘着于雌球花的几率，在任何情况下都是很小的。空气中有浓郁的花香。

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;

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；

Result is as follows: In the middle of October, the primordium of ovulate strobilus occurred, its occurrence time varied between different aged ramets and different occurrence part.

结果表明：雌球果原基发生时间为10月中旬，不同的树龄和着生部位，其发生时间不同。

It takes 14 months from differentiation of female strobilus to formation of mature embryo.

太白红杉从花芽分化到胚胎成熟历时14个月。

It lasted for more than four months from initiation of the ovulate strobilus to formation of anatropous ovules.

从雌球果原基发生到胚珠分化历时4个多月。

In addition, the relationship between strobilus spatial distribution and lighting is discussed and some initial suggestions about pruning ard thinning in the seed orchard are presented.

作者讨论了油松树冠受光环境与雌雄球花空间分布的关系，提出了油松种子园无性系整形修剪的初步设想。