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以往人们讨论苹果品质对光照的需求时,总是通过整形和修剪等管理措施来提高树体对光能的利用率.树体接受的光照,既有直接来自太阳辐射的直射光,也有周围物体反射回来的漫射光。在通常情况下,叶片所吸收的光能只占全光照的30%.一些高大的实生树,约能吸收全光照的30～40%.在行向排列上,像巴梨的南北行比东西行要多吸收光照30%,而安久梨的南北行则要多吸收48%。因此,果园定植时以南北行为宜.大多数苹果品种如能得到全光照的30～50%,就能满足着色、最佳品质的需要.一般着色不良和小果大都分布在树体的遮荫部分,果个大小适度和果型、着色较佳多在树冠受光最好的部
In the past, when discussing apple quality requirements for light, management of the tree’s light energy utilization, such as shaping and pruning, was always used to improve the tree’s light exposure to both direct sunlight coming directly from the sun and surrounding objects Diffuse light reflected back. Under normal circumstances, the leaf absorbs only 30% of the total light energy.Some tall trees, can absorb about 30 ~ 40% of full light.In the row direction, like North and SouthBar than the north-west line Rows to absorb more light 30%, while Anji pear north-south line will absorb more than 48%. Therefore, the orchard colonization should be north-south behavior.Most apple varieties can get the full light of 30 to 50%, can meet the coloring, the best quality needs.Generally poor color and small fruit are mostly distributed in the tree shade Part, the fruit of the appropriate size and fruit type, coloring better in the crown of the best light