1　氧化剂催花研究概况　　原产中国的龙眼是典型的南亚热带常绿果树 ,与荔枝、柑桔和橄榄等果树一样 ,冬季的低温和干旱是诱导成花的重要条件。我国龙眼主栽品种在 12月下旬进行生理分化 ,至 1月中旬进行花芽形态分化 ,开花期由 3月下旬至 5月 ,果实成熟由南到北从6月下旬至 9 1 Oxidant forcing research Overview The native Chinese longan is a typical southern subtropical evergreen fruit tree. Like the fruit trees such as lychee, orange and olive, low temperature and drought in winter are the important conditions for inducing flowers. The cultivars of longan varieties in China were physiologically differentiated in late December, and flower bud differentiation took place in mid-January. Flowering from late March to May and fruit ripening from south to north from late June to 9