近年来，油桃保护地栽培在我国发展较快。作为果树栽培的一种特殊形式，保护地栽培对品种有特殊要求〔１〕。曙光、华光、艳光是中国农科院郑州果树所新近育成并通过审定的早熟油桃系列新品种，目前已在全国２０余个省、区试栽推广。我们从１９９６年开始进行上述３个油桃品种 In recent years, cultivation of nectarine developed rapidly in our country. As a special form of fruit tree cultivation, cultivated species of protection have special requirements [1]. Dawn, Huaguang, Yan Guang is the Chinese Academy of Agricultural Sciences Zhengzhou fruit trees newly bred and approved by the early maturing nectarine series of new varieties, has been in the country more than 20 provinces and municipalities planted to promote. We started from 1996 three above nectarine varieties