油松是雌雄同株,雌球花着生在当年新梢的顶端,数量一般为1—4个;雄球花呈簇状着生在当年新梢的基部,数量可达几十个。对于每个油松个体来说,雌雄球花的比例差异很大,并且伴随这种比例关系,其它性状(如生长、冠形、叶长等)也存在着很大差异,因此在油松种内又分为偏雌、偏雄、中性三个类型。在遵化县东陵林场的油松无性系种子园内,发现有一个偏雌类型的 Pinus tabata is monoecious, the female ball with students at the top of the tip of the year, the number is generally 1-4; male ball was clustered flowers in the base of the new shoots, the number of up to dozens. For each individual Pinus tabulaeformis, the ratio of male and female ball flowers vary greatly, and with this ratio, other traits (such as growth, crown, leaf length, etc.) there are also very different, Inside is divided into partial female, partial male, neutral three types. In Zunhua County Forest Farm Clonal Seed Park, and found a partial estrus type