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在山东烟台,80年代中期以后建的苹果园多为亩栽83～111株(4×2米或2×3米)。随着栽植密度加大,树形与整枝技术也必须随之改进。很显然,传统的主干疏层形、小冠疏层形等在高密度栽植果园中已不适用,未结果先郁蔽的高密果园随处可见。这与密植条件下树形选择不当、沿用老法剪树有直接关系。笔者结合国外学习、工作所见及实践体会,对改进密植苹果园的整形修剪技术谈以下粗浅看法供参考。 1.密度加大,树形必然趋于窄而长。我国大
In Yantai, Shandong, 83 or 111 mu (4 × 2 meters or 2 × 3 meters) were planted in apple orchards after the mid-1980s. As planting density increases, tree and prune techniques must also be improved. Obviously, the traditional trunk sparse layer shape, small sparse sparse layer shape in the high-density orchard has not applied, no result of the first dark orchards can be seen everywhere. This is closely related to the tree selection under close planting conditions and the use of the old law tree cutting. The author combined with foreign study, work experience and experience, to improve the close planting apple orchard plastic pruning technology to talk about the following superficial view for reference. 1. Increased density, the tree tends to narrow and long. My country is big