Abstract: The characteristics of vegetative growth and reproductive growth of Pinus thunbergii and the relationships between them were studied by using the method of random sampling in the Chengshan Forest Farm. The best harvesting time and the techniques of Pinus thunbergii and Pinus densiflora for pollen were established through investigation in the coastal shelter forest and the inland of Jiaodong Peninsula. Pollen amounts of Pinus thunbergii and Pinus densiflora in male anthotaxy were tested both in the lab and in the field, and the relationships between pollen percentage and length of male anthotaxy of Pinus thunbergii and Pinus densiflora were confirmed. This provides a firm basis for the collection and industrial development of pine pollen.

Key words: pollen percentage , collecting technology, growth development, male anthotaxy, pine pollen, Pinus thunbergii Parl