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果树的根、茎、叶、花、果实等器官构建成分中,水占50%~90%,叶片的蒸腾作用、光合作用、根的吸收作用及矿质营养、光合产物的上、下运送,细胞膨压及枝叶温度的调节维持,树体内多种酶以及土壤中各种微生物的活动等等,都必须在有水的条件下进行。
Fruit tree roots, stems, leaves, flowers, fruits and other organ components, water accounted for 50% to 90%, leaf transpiration, photosynthesis, root absorption and mineral nutrition, up and down transport of photosynthetic products, cells Turbidity and foliage temperature regulation to maintain a variety of enzymes in the tree and the soil of various microorganisms activity, etc., must be carried out under water conditions.