Abstract: [Objective] In order to research the influence of chemical methods on the flower thinning effect and quality of Prunus salicina × armeniaca to screen the suitable chemical agent and concentration and to propose a simple method of flower thinning and control reasonable crop load.[Method] Three cultivars of Prunus salicina × armeniaca were taken as materials,different concentrations of three kinds of chemical flower thinning agents were sprayed at full-bloom stage and then the fruit setting rate and quality were determined.[Result]The results showed that when Fengweihuanghou was sprayed one time 20 mg/L NAA and 0.3°Be lime-sulfur at full-bloom stage,Konglongdan was sprayed 30 mg/L NAA and 0.4° Be lime-sulfur and Weidi was sprayed 30 mg/L NAA and 0.4°Be lime-sulfur,the fruit setting rate of these treatments was lower than that of the CK,and the fruit shape index,soluble solid content and sugar content and acid content were significantly improved.[Conclusion] Spraying one time 20 ～30 mg/L NAA and 0.3 ～0.4° Be lime-sulfur has better effects of flower thinning at one day or two days of full-bloom stage and can improve the quality of fruits.

摘要： [目的]研究化学方法对杏李疏花疏果效果及果实品质的影响,筛选出适宜的药剂和浓度,提出简便的疏花疏果方法,控制合理负载量.[方法]以3个杏李品种为试材,于盛花期喷施不同浓度的萘乙酸和石硫合剂进行疏花试验,测定坐果率及果实品质.[结果]风味皇后盛花期喷施1次20 mg/L萘乙酸及0.3°Be石硫合剂、恐龙蛋喷施30 mg/L萘乙酸及0.4°Be石硫合剂、味帝喷施30 mg/L萘乙酸和0.4°Be石硫合剂后,坐果率均低于清水对照,果形指数、可溶性固形物含量及含糖、含酸量等均有显著提高.[结论]杏李盛花期1 ～2d喷施1次20 ～ 30 mg/L的萘乙酸,或0.3 ～0.4°Be的石硫合剂进行疏花效果较好,且可提高杏李果实品质.