绝大多数甜樱桃品种都有花粉,但自花不实或自花结实率极低,必须配置相应的授粉树。据观察,甜樱桃不同品种组合花粉亲和率一般为30%左右,最高的70%。提高甜樱桃坐果率的技术措施如下。(1)合理配置授粉树主栽品种与授粉品种花期相遇并能互相授粉等。一般主栽品种与授粉品种的比例为3∶2,授粉品种3～4个,行株距4 m×3 m。目 The vast majority of sweet cherry varieties have pollen, but self-actual or self-pollinated rate is very low, you must configure the appropriate pollination tree. It is observed that sweet cherry varieties of different combinations of pollen affinity is generally about 30%, the highest 70%. The technical measures to improve sweet fruit setting rate are as follows. (1) Reasonable allocation of the main varieties of pollination trees and the pollination flowering meet each other and pollination. The ratio of common cultivars to pollination varieties is 3: 2, and the number of pollination varieties is 3 to 4 with a row spacing of 4 m × 3 m. Head