【摘要】 栽植密度能显著影响柚园内不同部位光照强度、叶面积系数、叶片发育质量及光合作用，从而影响光合产量的高低，最终影响柚的产量和品质。枳砧柚矮化密植栽培适宜规格是：行距2～3m，株距1．5～2m，栽植株数为1665～3330株／hm2。栽培中可以通过整形修剪来控制树冠高度（2～2．5m）和叶面积系数（6～7）。当树冠严重交接，叶面积系数大于7时，应及时间移。晚白柚、梁平柚为矮化密植丰产栽培的较理想品种。更多还原

【Abstract】 In this study, it was found that intensity of illumination in different posi-tion in pumelo orchard leaf area index leaf development quality and photosynthetic capacity were remarkably affected by planting density, Which had further influences on photosynthetic yield, and finally the fruit yield and quality. According to the re-sults, the optimum distance for rational dwnding and dense planting of Citrus gran-dis on poncirus trifoliata should be 1. 5-2 m ×2-3 m, with a planting density of 1665-3330 trees per hm. Suitable indices of tree canopy should be controlled as follows: canopy height 2-2. 5 m, and the mean leaf area index(LAI)in the canopy 6-7. When LAI was above 7, a series of measures should be adopted in training and pruning of the Canopy as well as in removig some trees in order to keep the op-timum LAI. WanBai and Liangping pumelo were optimum high yie1d varieties in dwarfing and dense planting of pumelo.更多还原