水是生物的命脉,果树生根、长叶、开花、结果都离不开水。果品的产量、质量是在水利条件较好的情况下显示出来的。洞察果树的需水量,模清果实生长发育规律和水的关系,是获得高产、稳产、优质的前提。因此,笔者自一九七二至一九七八年,在栖霞园艺场果园,对果树各部的含水量,水对苹果的产量、质量的影响,果树用水的来源及果实生长发育规律 Water is the lifeblood of life, fruit trees, long leaves, flowering, the results are inseparable from the water. Fruit production, quality is shown in the case of better water conditions. Inspecting the water demand of fruit trees, defining the relationship between fruit growth and development and water, is a prerequisite for obtaining high yield, stable yield and high quality. Therefore, from 1972 to 1978, in the orchards of Qixia Horticultural Field, the author studied the influence of moisture content of various branches of fruit trees, the impact of water on the yield and quality of apples, the source of fruit trees water and the growth and development of fruits