栽培桂花的传粉——以贵州师范大学为例

Pollination on the Cultural Plant of Osmanthus fragrans——Taking Guizhou Normal University as an Example

观测了贵州师范大学宝山校区内桂花访花者的种类、访花行为和桂花树的树高、胸径,并对校内桂花访花昆虫的访花频率、一朵桂花的花粉数和桂花的风媒传粉距离进行了检测。结果是校内桂花的传粉昆虫主要为膜翅目、双翅目、革翅目,表明该地区栽培桂花有效传粉的昆虫较少;观测出校园内栽培桂花的平均树高为5.48 m、平均胸径为18.96 cm,检测出单花的花粉数约为11 644.2个,推测出桂花的风媒传粉距离大于3 m。

The pollinator species and flower visiting behaviors of Osmanthus fragrans in the Baoshan campus of Guizhou Normal University were observed height and DBH of O. fragrans, the pollination frequency, pollen number and pollination distance were also detected. The results show that the main pollinating insects in campus are Hymenopteraa, Diptera, and Dermaptera, which suggests that the main insect pollinators of O. fragrans located in the area are not enough. Observation on the average of tree Height of O. fragrans is 5.48 m, while DBH is 18.96 cm, A single flower contains about 11 644.2 pollen for average. Further, we speculated that the anemophilous pollination distance of O. fragrans is more than 3 m.