Methods After finding Chinese Bellflower plants with aberrant anther,the natural pollination,artificial pollination and self-crossing experiments were conducted and harvested individually.

RESULT Through artificial pollination,the hermaphroditic flower ripening rates in Maoshan,Nanshan,Qinglongshan and Lingshan increased from 12.

Artificial pollination with hanging the branch and graft technique can enhance fruited capacity,but pollination with graft technique obtained a higher output.

Research advances of supplementary pollination in pistachio;

Artificia1 supplementary pollination could effectively increase the fruit setting rate,plumpness of the seeds and thousand-grain weight,especially for the late-blooming clones.

Pollen germination was tested on six-aged PVNA "zenjiomaru" and "shougatsu", and artificial pollination on "Fuyou" non-astringent persimmon at different temperature and sucrose concentration.

In this article,the author reviews advances in improved variety selection,clone,artificial pollination,application of fertilizers,prevention and control of plant diseases and elimination of pests in recent 20 years,and puts forward a direction in research of ginkgo cultivation in future.

Biochemical analysis indicated that biomacromolecule content in seed by artificial pollination with elite tree pollen were higher than that with scattered tree pollen.