近几年，国内外广泛开展了海藻提取物在果树上的应用研究。据山东省果树研究所试验，海藻制剂能促进苹果的营养生长，提高果实的综合品质，但未见有桃树上的试验研究。为此，１９９８年春天，我们在青岛市农科所南山果园，进行了海藻制剂对桃树生长发育的影响试验。１　材料与 In recent years, the application of seaweed extract on fruit trees has been widely carried out at home and abroad. According to the Shandong Provincial Institute of Fruit Research, seaweed preparations can promote the nutritional growth of apples, improve the overall quality of the fruit, but no peach experiments. To this end, in the spring of 1998, we carried out experiments on the effects of seaweed preparations on the growth and development of peaches in Nanshan Orchard, Qingdao Agricultural Science Institute. 1 material and