对华北驼绒藜的开花生物学特性进行了具体调查统计研究.结果显示,华北驼绒藜种群形成了一系列适应风媒传粉的花部特征:单性花,雌雄同株;雄花序细长而柔软,雄蕊4枚,无苞片;雌花小,无花冠,柱头指状,具有大量乳突细胞,便于捕捉花粉;居群内同一植株雌、雄花花期不一致性较高,花期不遇;每枝条雄花开花持续时间频率最高为7d,而雌花开花持续时间频率最高为6d;雌、雄花序呈单峰连续集中开花式样;雌、雄花始花时间与花期长度均呈极显著负相关(雌花r=-0.569,P<0.01;雄花r=-0.665,P<0.01),开花数与花期长度则为显著正相关关系(r=0.083,P<0.01),(r=0.346,P<0.01).研究表明,华北驼绒藜在长期的进化过程中,形成了同株雌、雄花花期不遇的生殖策略,因而减少了同株授粉的比例,提高了结实率. The results showed that the population of Ceratoides arborescens population formed a series of floral characteristics suitable for wind-pollinating: unisexual flowers, monoecious and male; slender and soft male inflorescences , Stamens 4, ebracteate; female flowers small, non-corolla, stigma finger, with a large number of papillary cells, easy to catch pollen; within the same group of female plants, male flower flowering inconsistency is high, flowering rarely; The highest frequency of duration was 7d, while the frequency of flowering duration of female flowers was 6d. The female and male inflorescences showed single peak and continuous flowering pattern. The flowering time of female and male flowers showed a significant negative correlation (P <0.05) , P <0.01; r = -0.665, P <0.01), and there was a significant positive correlation between flowering and flowering time (r = 0.083, P <0.01) In the long-term evolution of Ceratoides arborescens, a reproductive strategy was formed that was not observed at the same female and male flowers at the same plant, thus reducing the proportion of pollination in the same plant and increasing the seed setting rate.