通过对大青山万家沟油松无性系种子园进行初步研究 ,对种子园花粉水平、垂直分布及其飞散规律进行了调查、测定。结果表明 :散粉盛期 7～ 1 0 d,花粉浓度的最大值出现在 9～ 1 5时 ,花粉浓度的空间变化在垂直方向以 2米处最大 ,在水平方向上花粉分布不均匀 ,主要受风、温度、相对湿度等因素影响 Through the preliminary study on the clonal seed orchard of Pinus tabulaeformis in Wanqiaogou in Daqingshan Mountain, pollen levels, vertical distributions and scattering rules of pollen in the seed orchard were investigated and measured. The results showed that the maximum of pollen concentration appeared at 9 ~ 15 days after the pollination period was 7 ~ 10 days, and the spatial variation of pollen concentration was the maximum at 2 meters in the vertical direction and the pollen was unevenly distributed in the horizontal direction, which was mainly affected by Wind, temperature, relative humidity and other factors