Populus is branch of wind pollination and Salix is an other branch of insect pollination.

杨属是杨柳科中适应风媒的分支；

Insect and artificial pollination were essential to the rate of fertilization and fruit setting, whereas wind pollination demonstrated little effect.

虫媒和人工授粉对红荷包杏的授粉、坐果起着决定性的作用，风媒对红荷包杏的授粉基本不起作用；