这些特点与其两种花型植株的大小、花和果实分化的时间和位置、花粉源、传粉系统、花粉流及生境条件有关。
The above characteristics were relation to the size of two kinds of plants, the time of flowers differentiation, the fruits position, pollen type on stigma, pollination system, habitat conditions.
洪水期冲积物中的木本植物花粉主要是由雨水片流将春季落入表土的花粉带入河水中所致。
Arboreal pollen in alluvium mainly came from the surface pollen fallen on the ground in spring which was carried by sheet flow during the floods.
洪水期冲积物中的木本植物花粉主要是由雨水片流将春季落入表土的花粉带入河水中所致。
Arboreal pollen in alluvium mainly came from the surface pollen fallen on the ground in spring which was carried by sheet flow during the floods.
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