不同剪枝量对桃树生长与结果的影响

Effects of different pruning quantity on growth and fruiting in peach

修剪是促使桃园能够优质、高产最为关键的管理措施之一。以瑞蟠10号和雨花2号两个桃品种为试材,于休眠期分别进行无修剪(0剪枝量,延迟修剪)、轻剪(约50%剪枝量)和正常剪(约70%剪枝量)等3种剪枝量处理,以便探究休眠期不同剪枝量处理对于树体生长和结果所造成的影响。结果显示:瑞蟠10号桃延迟修剪、轻剪处理在6月底时的短枝比率分别是正常剪处理的2.00、1.90倍,而雨花2号桃延迟修剪、轻剪处理在6月底时的短枝比率分别是正常剪处理的1.19、1.17倍;瑞蟠10号和雨花2号桃轻剪处理667 m2产量均高于正常剪处理和延迟修剪处理,但可溶性固形物、可滴定酸含量均与正常剪处理无显著差异。研究结果对桃生产中的修剪管理具有一定的指导意义。

Pruning is one of the most critical management practices for producing high yield of high quality peaches in orchards.In this study,two peach varieties,‘Ruipan 10’and‘Yuhua 2’,were used as materials,and three levels of no pruning(0 pruning),light pruning(nearly 50%pruning)and normal pruning(nearly 70%pruning)were carried out during the dormancy period,so as to explore the effect of winter pruning on vegetative growth and fruiting.The results showed that the proportion of short twigs in the two treatments of no pruning and light pruning was 2.00 times and 1.90 times than the treatment of normal pruning at the end of June in‘Ruipan 10’,while the proportion of short twigs in the two treatments of delayed pruning and light pruning was 1.19 times and 1.17 times than the treatment of the normal pruning at the end of June in‘Yuhua 2’,respectively.The yield of the treatment of light pruning was higher than that of normal pruning,and significantly higher than the treatment of no pruning in‘Ruipan 10’and‘Yuhua 2’treatment.However,the contents of soluble solids and titratable acid were not significantly different among the three treatments.This study provides a significant reference for pruning management in peach production.