CPPU对促进猕猴桃果实增大的研究Ⅱ．CPPU对果实品质的影响和连年使用对果实增大的效果

Studies on the Use of CPPU for Enhancing the Fruit Growth of the KiwifruitⅡ.Influence of CPPU application on fruit quality and theresponse of sequential application in the following year

在研究ＣＰＰＵ促进猕猴桃果实增大效果的基础上，在使用ＣＰＰＵ后对猕猴桃果实品质的影响和连年使用ＣＰＰＵ的效果进行了研究。结果表明：ＣＰＰＵ有催熟作用，用ＣＰＰＵ处理的果实成熟期可提前１０－１５ｄ，使用浓度越高催熟作用越明显，而且采收后在室温条件下，果实的后熟过程也加快。处理果含糖量增加。有机酸含量有下降趋势。维生素Ｃ含量在高浓度（２０－３０ｍｇ·１￣（－１））情况下有下降趋势。但品尝表明，对食用品质并无不良影响。使用ＣＰＰＵ浸果不影响花芽的形成，但连续使用对促进果实的膨大作用，在不同条件下表现不同。在高水平的管理条件下，连续使用ＣＰＰＵ效果好，如果管理较差，肥、水跟不上，其效果就差。

CPPU hastened the ripening process of the kiwifruit during the period before and after harvest,leadingto an earlier harvest by about 10 15 days, and a higher total soluble solid content and lower acid level. TheVc content was changed insignificaItly,although it seenied to be lower in treated fruit. Fruit dipping did notinhibit flower induction.It gave a similar fruit growth stimulating effect when successively treated in the fol-lowing year as well as in the first year application, if the orchard was satisfactorily managed.