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自70年代中期以来,辽宁省新发展的梨树,几乎都是密植,对于这些树应采用相应的简化修剪方法,以促进其丰产。一、简化修剪的途径1.采用简化的树形无支柱篱壁或整枝是密植的较好整枝方式,密植梨树的株行距为2×4×4—5米,亩栽33—83株,定植3—5年后,株与株交接,每行树必然构成一道树篱,这是密植梨树采用篱壁整枝的主要根据。圆锥体的纺锤形,扁体的扇形和下窄上宽的“T”字形,是篱壁整枝较好的个体树形,株距不睥用纺锤形,稍大的用扇形成“T”字形。这三种树形,均属中小冠形,造形简易省工,即在中心干上着生10—18个大中枝(前期多留,后期减半),自然错落(纺锤形),或分层排列(扇形和T字形),枝间距离灵活掌握,摆布开即可。但下层枝忌垂直伸向行间,以顺行或斜行向伸展为宜(?)“T”字树形的上层枝则是
Since the mid-1970s, newly developed pear trees in Liaoning Province have almost all been densely populated, and corresponding simplified pruning methods should be adopted for these trees in order to promote their high yield. First, to simplify the pruning approach 1. The use of simplified tree without struts or prunings is a better close planting pruning close planting pear spacing of 2 × 4 × 4-5 meters, planted 33-83 acres of acres, 3-5 years after planting, the plant and the strain transfer, each row of trees will inevitably form a hedge, which is close planting pear tree pruning the main basis. Spindle cone-shaped, flat fan and the lower width of the width of the “T” -shaped, is a better secluded fence secluded individual trees, not with the spindle pitch plant, slightly larger fan formed “T” shape. These three trees are small and medium-sized crowns, forming a simple labor-saving work, that is, there are 10-18 large and medium-sized branches in the center (more in the early stage and half in the later stage), natural patchwork (spindle shape), or stratification Arrangement (fan-shaped and T-shaped), the distance between the branches flexible grasp, can be placed open. However, the lower branches avoid vertical stretching between lines, to run in parallel or oblique line is appropriate to extend (?) “T” word tree top branch is