The invention discloses a method of planting apple trees on a mountain slope. The method comprises the first step of preparation before planting, the second step of planting, wherein
apple tree seedlings are sequentially planted in different
cement frame sets from bottom to top along the mountain slope according to successively increasing heights, and the third step of fertilization, wherein one month after the apple trees are planted, a plurality of spherical
gelatin sponges are placed nearby roots of each
apple tree seedling. According to the method, the mountain slope with the gradient between 40 degrees and 50 degrees and the orientation to the south is selected, the
apple tree seedlings with different heights are sequentially planted in different
cement frame sets from bottom to top along the mountain slope according to successively increasing heights, the apple tree seedlings are distributed in a step shape, it is guaranteed that all the apple tree seedlings can enjoy
sunlight within the maximum range,
sunlight exposure is more sufficient, the
sweetness of apples is improved, and the problem that the quality of apples is lowered because leaves on the lower sides of the apple trees cannot be exposed to
sunlight and illumination is uneven when the apple trees are planted on flat land is avoided; moreover, when the apple trees are planted on the mountain slope, the stability of the mountain slope can also be improved.