预防朱砂李裂果的研究

A STUDY OF PREVENTION OF DEHISCENT FRUITIN Cinnabar plum

以７年生毛桃砧朱砂李为试材，在稳果后分别采用盖膜、覆草、套袋、增施钾肥、叶面喷石灰水等处理．结果表明，各处理均能有效地预防裂果，与对照差异显著．随着果实成熟度的增加，水势下降，水势下降缓慢，裂果程度轻．总糖含量随成熟度提高呈梯度上升，上升幅度愈大，裂果愈重．果实中氮、钾的含量高，磷的含量低，裂果减轻．

The Cinnabar plum in a 7-year wild peach stock is taken as the experiment ma-terial in this experiment. When the fruits are in a steady state,they are treated with the fol-lowing nine treatments respectively :covering with plastic film,straw and bags,adding supply potash fertilizer,carbamide and lime wash on its leaves,coating its fruit swith ethylene and “920”and control. The results obtained show that each treatment can prevent fruits from splitting effectively and has remarkable differences with the control. The MPa of the fruit re- duces as its ripening degree increases. The slower the tendency of decline of MPa is, the smaller in the dehiscent fruit degree is. The total sugar content of the fruits rises as its ripening degree increases. When the N. P, content in its fruit is high and the K content is 1ow.