近年来，各地大力调整种植结构，发展果树生产。果树苗木一度成为抢手货，但由于苗木市场管理混乱，苗木品种良莠不齐，造成一些果园种树不结果，“公树”连片，或虽结果但品种差、产量低、质量劣、效益不高。解决这些问题的根本方法是高接换种，尤以夏季为佳。因为夏季果树处 In recent years, vigorously readjust the planting structure and develop fruit tree production. Fruit trees and seedlings once became a hot commodity, but due to the chaotic management of seedlings market, good and bad seedlings varieties, resulting in some fruit trees orchard results, “public tree” contiguous, or although the results of poor varieties, low yield, poor quality, low efficiency. The fundamental solution to these problems is a high exchange rate, especially in summer. Because of the summer fruit tree office