摘要
研究了篱剪对密植郁闭桔园的作用，结果表明，通过篱剪①可以明显地改善树体的光环境，使树冠基部的光照强度平均比对照提高了１倍多；②使叶片的潜在光合能力得到发挥，改善了群体叶的光合生产力；③经过４年的积累统计，果实产量提高了３３％，并且显著增加了果实的糖、Ｖ＿ｃ和固形物含量，对促进果实膨大也有一定的作用。
The effects of hedging on light distribution within the canopy,leaf photosynthesis and fruit yield of citrus trees were studied in a dense and closed citrus orchard.As a result of hedging the light intensity at the canopy base of the treated trees was increased by 50 percent compared to the untreated control,so that the light condition of the orchard was greatly improved.The propor tion of leaves with high photosynthetic capacity in the canopy was also increased.Consequently,the canopy photosynthetic productivity was enhanced.Fruits of higher quality and larger size with higher Vc and sugar contents were obtained from the hedging pruned trees. The analysis of 4 year cumulative yield showed that the treated trees bore 3 3%more fruits than the control. These re-sults indicate that hedging is a promising practice in growing citrus.
基金
国家自然科学基金
关键词
柑桔
光分布
光合
产量
品质
修剪
hedging
citrus
canopy light condition
yield
quality
leaf photosynthesis
