我们南关大队为了使幼龄苹果树茁壮生长并能适龄结果和早期丰产,于77、78、79年秋分别对76年春定植的苹果幼树进行了扩穴施肥。方法是在原定植穴的外缘,采用环状开沟,沟深2尺、宽1.5尺。每株施肥两担,并加入化肥硫酸铵0.3—0.5斤;为了 In order to make juvenile apple trees thrive and age-appropriate results and early high-yielding crops, we carried out hole fertilization in the autumn of 77, 78 and 79 in the spring of 76 years. The method is in the original planting hole outer edge, the use of circular ditches, ditch 2 feet deep, 1.5 feet wide. Fertilizer two per plant, and add fertilizer 0.3-0.5 kg of ammonium sulfate;