苹果果实的产量每1.5亩(10公亩)约产2～4吨,而决定该产量的是叶制造的碳水化合物的量起重作用。通常我们把这种叶制造碳水化合物的量称作干物质产量。从果实来看:果皮、果肉、种子和糖、酸等,果实干燥时所保留的物质几乎都是干物质。全是通过叶的光合作用而制造出来的。一般认为:如果叶体干物质生产少,果实 The yield of apple fruit is about 2 to 4 tons per 1.5 acres (10 acres), and the amount of carbohydrates produced by the leaves plays a role in determining the yield. Often we call this amount of carbohydrate produced by this leaf as dry matter yield. From the fruit point of view: peel, pulp, seeds and sugar, acid, etc. When the fruit is dry, almost all the substances retained are dry matter. It’s all made from the photosynthesis of the leaves. Generally believed that: If the leaf dry matter production less fruit