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矮化密植栽培的突出特点是早结果,早丰产。乔化稀植大冠苹果树,一般需经5—6年开始结果,12—13年以后进入盛果期。而矮化苹果树,栽后2—3年就开始结果,5—6年便进入盛果期。用吉林省农科院果树所培育的Gm—256做中间矮化砧,嫁接苹果矮化效果好,和高乔抗寒大苹果嫁接,表现亲和力强,生长势好。吉林省除集安地区外,都不适合大苹果生产性栽培,主要因素是冬季气温低、冻害严重,制约了大苹果生产的发展。1994年新疆农七师和沈阳农大通过省级鉴定了新
Dwarf and dense cultivation is characterized by early results, early high yield. Qiaohua macrophyte apple tree, generally take 5-6 years to start the results, 12-13 years into the flourishing period. The dwarf apple trees, planted 2-3 years after the start of the results, 5-6 years into the full fruit period. With the Jilin Academy of Agricultural Sciences fruit trees grown Gm-256 to do the middle dwarfing anvil, grafted apple dwarfing effect, and Gaoqiao cold grafting apple, showing good affinity, good growth potential. Jilin Province except Ji’an area, are not suitable for large apple cultivation, the main factor is the low winter temperatures, severe frost damage, restricting the development of large apple production. In 1994 Xinjiang seven agricultural division and Shenyang Agricultural University passed the provincial appraisal of the new