油桃保护地栽培首选育种——五月火“五月火”系山东省果树研究所从美国引进的特早熟油桃新品种，具有自花结实、早果丰产性强、适应性广、需冷量低等生物学特性，是果树设施栽培的首选品种。１９９６年春开始，山东省果树研究所在平度、冠县等地进行了一定规模的大棚栽培... Cultivation of nectarine conservation preferred breeding - May fire “May fire” is the fruit of the Institute of Shandong Province introduced from the United States, the special precocious nectarine new varieties, with self-flowering, fruitful early yield, wide adaptability, required Cold and low biological characteristics, is the preferred varieties of fruit trees cultivation. The spring of 1996, Shandong Fruit Research Institute in Pingdu, Guan County and other places carried out a certain amount of greenhouse cultivation ...