Abstract: [Objective] This project aims to study the effects of different amount of fruit on the yield and quality of nectarine in greenhouses.[Method] The Zhongyou 5'nectarine in greenhouse cultivation of 6 years old was taken as the research object,through different periods of different fruit thinning,the fruit keeping number was determined so as to study the effects of the different keeping number on fruit quality of Zhongyou 5'nectarine.[Result] With the increase of the number of fruit per plant,the yield per plant increased,but the single fruit weight decreased,the firmness of fruit increased,and the content of soluble sugar decreased gradually.[Conclusion] Considering factors such as quality and yield under the condition of normal cultivation management,the keeping number between 100-120 of Zhongyou 5 fruit of six years can show a good cultivation benefits.

摘要： [目的]研究留果数量对日光温室油桃产量、品质等的影响.[方法]以日光温室栽培的6年生中油5号油桃为研究对象,通过不同时期疏果处理,确定不同留果数量,研究不同留果数量对中油5号产量及果实品质等的影响.[结果]随着单株留果数量的增加,单株产量有所增加,但单果重下降,果实硬度增大,可溶性糖含量逐渐降低;果实单宁含量、糖酸比值下降后升高.[结论]综合考虑品质、产量等因素,6年生中油5号油桃在正常的栽培管理条件下,留果数量在100～120个时能发挥出较好的经济效益.