对多年来，从美、日、意等40多个国家和地区引入果树24科36属131个品种资源共1600份，成活1429份，除去重复新增1177份，并入回保存915份，完成农艺、抗性评价764份，选出233个可直接用于生产的优良品种和一批可作为杂交系本的资源，引入的苹果、柑桔优良品种已推广，面积达893 For many years, from the United States, Japan, Italy and other more than 40 countries and regions into the 24 species of 36 genera and 131 genus resources in 1600, survived 1429, except for the repeated addition of 1177, and back into the preservation of 915, completed Agronomy and resistance evaluation of 764, selected 233 can be directly used for the production of fine varieties and a number of resources can be used as a hybrid, the introduction of apple, citrus varieties have been promoted, an area of ​​893