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• 研究报告 •

### 短截修剪程度对‘红灯’甜樱桃13C和15N分配利用的影响

1. 1山东农业大学园艺科学与工程学院，山东泰安 271018；2山东邹城市林业局，山东邹城 273500；3蓬莱市村里集镇人民政府，山东蓬莱 265600
• 出版日期:2015-01-25 发布日期:2015-01-25
• 基金资助:

山东省农业科技成果转化基金项目（鲁科农字[2005]第93号）

### Effects of Cutting Back Pruning Degree on Distribution and Utilization of 13C and 15N for Prunus avium‘Hongdeng’

FU Ying，JIANG Yuan-mao，ZHANG Shi-zhong，LEI Qing-guo，and TANG Xian-zhuang

1. 1College of Horticulture Science and Engineering，Shandong Agricultural University，Tai'an，Shandong 271018，China； 2Zoucheng Forestry Bureau，Zoucheng，Shandong 273500，China；3Cunliji Town People's Government，Penglai City，Penglai，Shandong 265600，China
• Online:2015-01-25 Published:2015-01-25

Abstract: Two-year-old field sweet cherry trees（Prunus avium L.‘Hongdeng’/Cerasus sachalinensis Kom.）were used to study the effects of different cutting back pruning degrees on characteristics of distribution of 13C and 15N，and as well as utilization of 15N. The results showed that the cutting back pruning promoted the carbohydrates to root system distribution at the new shoot growing stage. The extremely heavy cutting back pruning reduced the 13C distribution ratios to the leaves and new shoots respectively by 29.15% and 7.3%，and increased the distribution ratios to the large and fine roots respectively by 46.65% and 48.43% With the tree growing process，the 13C distribution ratios in the cutting back pruning treatment's leaves and new shoots were higher than that in the control. The 13C distribution ratios in the perennial branches decreased with the increase of the cutting back pruning intensity. The 13Cdistribution ratios in roots were the lowest in the moderate cutting back pruning and the highest in the extremely heavy cutting back pruning. The sequence of the 15N utilization ratios from high to low was the moderate pruning > the control > the extremely heavy pruning. The maximum difference of 15N utilization efficiency appeared at new shoot stop growing stage，and the 15N utilization ratios respectively were 6.91%，5.54% and 3.60% in the moderate，the extremely heavy cutting back pruning and the control. The 15N utilization ratios in the perennial branches decreased with the increase of the cutting back pruning intensity and that in leaves and new shoots increased with the increase of the cutting back pruning intensity.