前言由于改革开放政策的稳定,我国的市场经济、农业产业化有了很大发展,种植业结构正在不断调整,其中果品生产表现尤为突出。在过去的年代里,苹果、梨、桃曾为经济欠发达地区经济的发展发挥了重要作用,随 Preface Due to the stability of the policy of reform and opening up, China’s market economy and agricultural industrialization have made great progress. The structure of planting industry is constantly being adjusted, of which the fruit production performance is particularly prominent. In the past years, apples, pears and peaches have played an important role in the economic development in economically underdeveloped areas. With the