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桃树冠层相对光照分布与果实产量品质关系的研究
引用本文:何凤梨,王飞,魏钦平,王小伟,张强.桃树冠层相对光照分布与果实产量品质关系的研究[J].中国农业科学,2008,41(2):502-507.
作者姓名:何凤梨  王飞  魏钦平  王小伟  张强
作者单位:1. 西北农林科技大学园艺学院,陕西杨凌,712100
2. 北京市农林科学院林业果树研究所,北京,100093
摘    要: 【目的】研究桃树开心形树冠内相对光照强度与果实品质的关系。【方法】以5年生晚蜜为试材,以树干为中心,用竹竿将树冠分成不同层次、方位的50 cm×50 cm×50 cm的立方体,在生长时期测量不同部位相对光照强度,成熟期测量不同部位果实产量和品质。【结果】桃树开心形树冠内相对光照强度随树冠由外到内、由上到下逐渐递减;在第一次叶幕形成和最终叶幕形成的两个不同时期,不同相对光照强度的树冠体积占整个树冠体积的比例差异显著,小于30%的分别占7.71% 、47.91%,大于80%的分别占27.7% 、3.13%;果实主要集中分布在树冠上、中部1.5~3.0 m。回归方程解析得出果实单果重和可溶性固形物含量与相对光照强度均呈显著相关性。【结论】相对光照强度是影响果实单果重和可溶性固形物的主要因素,生产优质桃果实的最低相对光照强度为36.31%,生产中应注意合理进行夏季修剪,调节枝叶数量和空间分布,降低相对光照强度小于36.31%的树冠空间体积。

关 键 词:  开心形  相对光照强度  品质  冠层
收稿时间:2006-10-31
修稿时间:2007-01-19

Relationship Between Distribution of Relative Light Intensity in Canopy and Yield and Quality of Peach Fruit
HE Feng-li,WANG Fei,WEI Qin-ping,WANG Xiao-wei,ZHANG Qiang.Relationship Between Distribution of Relative Light Intensity in Canopy and Yield and Quality of Peach Fruit[J].Scientia Agricultura Sinica,2008,41(2):502-507.
Authors:HE Feng-li  WANG Fei  WEI Qin-ping  WANG Xiao-wei  ZHANG Qiang
Abstract:【OBJECTIVE】 The aim of experiment is to study the relationship between distribution of relative light intensity in canopy and fruiting and quality factors of wanmi peach. 【METHOD】Canopy were divided into 50cm×50cm×50cm cubic with bamboo and measured the difference of relative light intensity distribution, characteristic of yield distribution and fruit quality factors in different growing time and position canopy.【RESULT】The results showed that the relative light intensity decreased gradually from outside to inside and from top to down. The ratio of relative light intensity in canopy volume<30 % was 34.25%, 30%~40% was 13%, 40%~60% was 36.5% and 60%~80% was 19.25%. The distribution of fruit were in up and middle position during 1.5m~3.0m of the canopy. 【CONCLUSION】 The regression equation of the relationship between relative light intensity distribution and fruit quality factors was set up to show that single fruit weight and soluble solids were the positive correlation with relative light intensity, and to obtain optimum value of relative light intensity was above 36.31% for good quality of peach.
Keywords:Peach  Open Center Shape  Relative light intensity  Quality
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