核桃幼树阶段,始花的2～3年内往往只开雌花,而无雄花。为保证幼树雌花受精,必须对核桃树进行辅助授粉授精,增加早期产量和经济效益,据我们5年的探索,在甘肃省最大的核桃园平凉百里林场,150公顷核 Walnut sapling stage, the beginning of the flowers within 2-3 years often only female flowers, without male flowers. In order to ensure the fertilization of saplings, walnut trees must be assisted with pollination and insemination to increase the early yield and economic benefits. According to our five years of exploration, we planted 150 hectares of nuclear plants in the Pingliang Tree Farm, the largest walnut park in Gansu Province,