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近3年内在樟子松种子园设了一个花粉观测点，对花粉密度飞散规律、花粉分布特点、受气象因子影响等进行了研究。结果表明，散粉高峰期为1日（19日），散粉盛期为高峰期前后各1日，日散粉密度最大值740粒／cm2。园内授粉有效高度内花粉量不足．仅为观测空间花粉量44．9％，而且分布不均，影响授粉率。主风方向种子园空间边缘花粉量低于中心20．1％。花粉密度与授粉率密切相。
In the past 3 years, a pollen observation spot was set up in the seed orchard of Pinus sylvestris var. Mongolica, and the rules of pollen density scattering, pollen distribution and the influence of meteorological factors were studied. The results showed that the peak of scattered powder was on the 1st (19 th), the peak of loose powder was on the 1st of each day before and after the peak, and the maximum on-day bulk density was 740 particles / cm2. Pollen pollination within the effective height of less than the amount of pollen. Only the observation space of 44.9% of the amount of pollen, but unevenly distributed, affecting the pollination rate. In the main wind, the amount of pollen on the edge of seed orchard space was lower than 20.1% of the center. Pollen density and pollination rate close phase.