乔砧苹果密植栽培,在我国已有数十年的历史,积累了比较宝贵的正反两方面的经验,在生产上起到了作用,产生了影响。如果以解放后群众自发地栽植密植园为第一代密植的话,1960年前后有组织地建立密植试验园为第二代密植,那么,自七十年代初叶开始的密植,则可为第三代密植了。这最近一代的密植,其规模之大、范围之广、内容之多、成果之快,都是前所未有的。十年前的“密植热”席卷全国苹果产区,经过多年的生产、研究实践,其效果究竟如何?有那些值得肯定的经验?还存在什么问题与教训?其前景怎样?该是有个初步结论和看法的时候了。为此,我们带着问题,深入产 Qiao ani close planting apple cultivation in our country has decades of history, has accumulated more valuable experience both positive and negative, played a role in production, had an impact. If after the liberation of the masses spontaneously planting dense plantations for the first generation of dense planting, then around 1960 organized the establishment of close planting test plant for the second generation close planting, then since the beginning of the seventies leaf close planting, then for the third generation Close planting. This closest generation of close planting, its scale, scope, content, results faster, are unprecedented. Ten years ago, “dense planting heat” swept across the country’s apple producing areas, after years of production, research and practice, the effect of what exactly? Have those who are sure to experience? What are the problems and lessons? What is the future? There is a preliminary Conclusion and opinion of the time. For this reason, we carry out the problem in-depth production