我所试验楼前有一片苹果老树,人们叫“卫星园”,自1922年定植,至1981年恰好为60年。在60周年之际,亩产仍然达到了5360斤的高产水平。该园株行距为7×7米,面积为12.5亩。定植当时国光品种为164株,鸡冠品种树6株。后来有4株国光换上了元帅。因此目前该园共170株树,由国光、鸡冠、元帅三个品种组成。 There was an old apple tree in front of the building where I was experimenting. People called “Satellite Garden”, which was planted since 1922 and happened to be exactly 60 years in 1981. At the 60th anniversary, the yield per mu reached 5360 pounds. The plant spacing of 7 × 7 meters, an area of ​​12.5 acres. At the time of colonization, 164 varieties of Guoguang and 6 varieties of Cockscomb were planted. Later, 4 Guoguang replaced Marshal. Therefore, the park has a total of 170 trees, the country light, cockscomb, marshals three varieties.