成龄果园秋剪对提高果实品质的影响

以23年生红富士为试材,于2011年8月25日、9月10日和9月25日在新泰龙廷镇土门村果园分别进行了修剪,修剪量大约控制在营养枝的25%～30%。结果发现:8月25日修剪的果树,单果重比对照低10%左右,但果实着色指数提高了20%左右;9月10日进行修剪的果树,果实着色指数提高了18%左右,单果重、果形指数、硬度和可溶性固形物略有提高,但差异性没有达到显著水平;9月25日修剪的果树,单果重、硬度和可溶性固形物与对照相比几乎没有差异。试验结果表明,红富士进行秋剪的最佳时间是9月10日前后。

Effects of Fall-Pruning on Fruit Quality of Red Fuji Apple

The 23-year-old Red Fuji apple trees located on Tumen Village,Xintai City,Shandong Province were used to study the effects of fall-pruning on their fruit quality.The fall-pruning was separately performed on August 25,September 10 and September 25,and 25%～ 30% of vegetative branches were pruned.The results showed that the single fruit weight of Red Fuji apple trees pruned on August 25 reduced by about 10%,but the coloring index improved about 20% compared to the control.There were no significant difference in single fruit weight,fruit-ship index,firmness of flesh and soluble solid between the trees pruned on September 10 and the control,but the coloring index of pruned tree increased by 18%.The fruit quality of the trees pruned on September 25 had no obvious difference with that of the control.The results indicated that the optimal fall-pruning time was about September 10 for Red Fuji apple trees.