1959年山东烟台黄务公社紹瑞口生产队在1,372亩9年生大国光苹果(砧木为沙果)幼树丰产园内創造了亩产11,040斤的早期高額丰产典型,树势生长良好,当年发育枝长135.5厘米,花芽多。早期丰产的主要技术措施:1.挖大坑、栽好苗,坑深、寬各1米,每穴施基肥100斤,选用整齐粗壮的好苗。2.合理利用行间间作花生、地瓜等矮生作物,以后随树冠扩大逐漸减少間作面积。3.輕度修剪,采用疏散分层整形,一般干高2.5尺,第一层主枝3— In 1959, the production team of Sharui mouth of Yantai Huangtong commune in Yantai, Shandong Province, produced 11,040 kg of early high-yield typical fruit in a 1,372-acre 9-year-old Evergreen apple seedling Branch length 135.5 cm, flower buds and more. The main high-yielding early technical measures: 1. Dug dug, planted seedlings, pit depth, width of 1 m, 100 pounds per hole base fertilizer, use neat sturdy seedlings. 2. The rational use of inter-row for peanuts, sweet potatoes and other dwarf crops, with the tree crown later gradually reduce the intercropping area. 3. Mild trimming, the use of stratified evacuation plastic, generally dry 2.5 feet high, the first layer of main branch 3-