中国早白垩世中、晚期被子植物花粉的特征及其意义

在系统研究中国早白垩世中、晚期被子植物花粉产出时代分布特点的基础上，重点总结了中国早白垩世中、晚期的被子植物花粉具有地区分布广、东西部差别大；化石时代分布完整的剖面少；属种类型与化石数量由少增多，递增迅速；个体小、萌发器官多样，三沟粉占主要位置；经历了两个演化阶段；南北分区明显等规律。中国陆相白垩系极其发育，被子植物花粉产地点多面广，因此开展中国早期被子植物花粉的研究，对全球被子植物花粉起源与演化的研究提供地区性资料，具有十分重要理论价值；在生产实践中，利用早期被子植物花粉演化规律的研究成果，可以解决地层的细分和全球地层时代的精确对比，以及古植被古气候演变等信息，因此也具有实践上的重要意义。

Angiosperm pollen characteristics and significance at middle-late period of Early Cretaceous in China

On the basis of systematic study of angiosperm pollen age at middle-late period of Early Cretaceous in China, the 6 new cognitions are obtained: the extensive distributing region, the big difference between east and west in China; the most sections of fossil age are not complete; the types and numbers increased fast; bodies are small, many kinds of sproul organ types, triptyches pollen occupied main position; 2 evolution stages were gone through; the north and south divisions in China are remarkable different. The theory and practice significance are pointed to study angiosperm pollen age at middle-late period of Early Cretaceous.