兼答山西读者王大鸣1合理配置授粉树核桃雌、雄花期不同,建园时必须合理配置授粉树。应将雌、雄花同时开放的品种进行混栽。核桃花是风媒花,但其花粉飞翔力弱,定植时应考虑授粉树的距离,授粉品种与主栽品种的距离宜近不宜远。2人工辅助授粉核桃花粉寿命短,一般只有2～3d(天),另 Answered Shanxi readers Wang Daming 1 Reasonable allocation of pollination tree female walnut, male flower different, polo ralph lauren pas cher, the park must be properly configured pollination tree. Female and male flowers should be planted at the same time. Walnut flowers are wind-flowers, but their pollen flying weak, pollination trees should be considered when planting distance, pollination varieties and cultivars close to the appropriate distance should not be far. 2 Artificial pollination walnut pollen short life expectancy, usually only 2 ~ 3d (days), the other