‘龙柱’碧桃对不同强度修剪反应及抗寒性影响的研究

以5~6年生‘龙柱’碧桃为试材，研究在冬夏两季利用4种不同强度修剪对树势生长建造及抗寒性的影响。实验结果表明：不同季节和修剪强度对‘龙柱’碧桃抽条、花势、花期和耐寒力存在差异。长放处理后萌枝少，花期短，花色杂，1年生枝抗寒性弱；轻剪处理后成枝力较强，花量多但花冠小颜色浅，抗寒力强；中剪处理萌发长枝数多，花芽萌动早，花期长，抗寒力较强；重剪处理成枝力最高，花冠大但花量少，夏季重剪后萌枝抗寒性最低。

Research of the Effects of different pruning intensity and cold hardiness On The LongZhu Prunus persica

The experiments showed that four different pruning had different influence to growth construction and cold resistance, when we used 5-6 years-old ‘Longzhu’ in winter and summer. The results showed that the effect of different seasons and pruning intensity to Prunus persica ‘Longzhu’ cuttlefish ribbon, flowering, cold resistance were different. Sprout branches were little; flowering time was short, color was mixed and disorderly, and 1-year-old branch’s cold resistance was weak, if we don’t do pruning. If we did light pruning, branching ability, cold resistance was stronger. If we did moderate pruning, sprout branches were more, flower bud was earlier, flowering time was long and cold resistance was stronger. Heavy pruning made the strongest branching ability, larger corolla and less spend. If we did heavy pruning in winter, branching ability was the least, and cold resistance was the weakest.