柠檬留树保鲜对品质的影响朱春华.docVIP

PAGE  PAGE 5 柠檬留树保鲜对品质的影响 朱春华 李进学 周东果 彭满秀 高俊燕* （云南省农业科学院红瑞柠檬研究所；国家柑橘产业体系柠檬综合试验站，云南 德宏 678600） 摘要：德宏柠檬春花果正常采收季节在8～10月，采用留树保鲜技术将春花果柠檬留至次年4月23日，并测定留树保鲜对柠檬品质的影响。结果表明：柠檬留树保鲜过程中，落果率、出汁率不断升高，落果率从2.27%上升至33.64%；出汁率从11月23日的41.54%上升至次年的4月23日45.06%；固形物呈现先升高后降低的趋势，含量从11月23日的7.99%上升至次年1月23日的8.37%，此后1个月保持不变，至4月23日，下降至7.83%；总酸、维生素C呈下降趋势，含量分别从11月23日的6.75%、62.09mg/kg下降至4月23日的6.36%、60.49mg/kg；还原糖略呈上升趋势，从11月23日的1.25%上升至1.41%。结合留树保鲜的品质及落果率，春花果柠檬留树保鲜最佳采摘时间???在次年的1～2月。 关键词：柠檬；品质；留树保鲜 Study on Effects of Lemon Quality During the Tree Storage ZHU Chun-hua, LI Jin-xue, ZHOU Dong-guo, PENG Manxiu,GAO Jun-yan * (Hongrui Lemon Research Institute of Yunnan Provincial Academy of Agricultural Sciences;Lemon Experiment Station , Citrus industry system of modern agricultural technology, Dehong 678600,China) Abstract: Dehong lemon harvest seasons from August to  HYPERLINK /october/ \t _blank October. It were used Fresh-keeping Technique for lemon to late April  HYPERLINK /23/ \t _blank 23 and analysis lemon quality. The results showed that: The fruit abscission and  HYPERLINK /juice/ \t _blank juice yield increased during fresh on plant, fruit abscission from 2.27% to 33.64%,  HYPERLINK /juice/ \t _blank juice yield from 41.54% to 45.06. The Soluble solides content showed increased and then decreased, It’s content from 7.99%(Nov 23) increase 8.37%（the following year on January 23）and remain unchanged follow month, then decreased to 7.83%. Vitamin C, total acid content decreased respectively, from 6.75%、62.09mg/kg to 6.36%、60.49mg/kg. Reducing sugar has the trend of ascent, from 1.25% to 1.41%.According to fruit abscission combined with quality analysis measured lemon optimal harvest period from  HYPERLINK /january/ \t _blank January to  HYPERLINK /february/ \t _blank February the following year. Key words: lemon; quality; on the tree storage 基金项目：“十一五”国家科技支撑计划重大项目（2008BADP6B06）；国家科技部科技人员服务企业行动项目（2009GJF30028）；云南省科技计划党政“一把手”科技工程项目（2008QA004） 作