设施栽培灵武长枣果实成熟过程中品质变化规律研究

Studies on the fruit quality changes during ripening of Lingwu Long Jujube under protected cultivation

以7年生的灵武长枣为试材,测定设施栽培条件下枣果成熟过程中果实单果质量、横纵径、可滴定酸、可溶性固形物和可溶性糖含量的变化,探究灵武长枣果实成熟期内主要营养成分的变化.结果表明:设施灵武长枣在成熟过程中,随着果实成熟度的增加,单果质量不断增大,采摘前3周内增速最快,成熟采摘时达到了20.45 g;横纵径也不断增大,在采摘时分别达到30.73 mm和48.82 mm;果实可溶性固形物、可溶性糖含量也呈逐步上升趋势,在成熟采摘时分别达到25.20%和22.93%;可滴定酸含量则出现先升后降的趋势,在全红期达到0.47%.

The changes of fruit weight, transverse and longitudinal fruit diameter, soluble sugar, titratable acid and soluble solids content during the fruit maturation are investigated in protected culture based on 7-year-old jujube trees, to exploring variations in the nutritional components of Lingwu Long Jujube fruit maturation period.The results show in the maturation of Lingwu Long Jujube in Greenhouse, with the increasing of fruits maturity, fruit weight is increasing and grows fastest in the first three picking weeks, when reached the period full red stage, it weights 20.45g; transverse and longitudinal diameter also increased ceaselessly, reached 30.73 mm and 48.82 mm respectively, in picking stage; fruit soluble solids, soluble sugar content is also gradually rising, it reached 25.20% and 22.65% in the mature stage; The content of titratable acid have the trend first increased and then decreased.