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经多年在晋县鸭梨产区观察,“疏散分层形”树形,不完全适合鸭梨生产的应用,缺点是:树体过高,层次过多,下部果枝脱落,普遍是上强下弱内膛空,结果部位外移上移,形成“高、大、空”的树形。近几年经实践证明,采用“单层一心”的树形效果较好,基本上克服了以上弊端。如1983年春秋,我们在马家庄鸭梨生产园(164.8亩4400株)和周元方鸭梨生产园(169.8亩2700株),选19
After years of observation in Yali pear production area of Jinxian County, the tree shape of “evacuation delamination” is not completely suitable for the application of Yali pear production. The disadvantages are: excessive height of the tree, excessive layers and loss of fruiting branches in the lower part, Weak bore, the result of the relocation of the site up, forming a “high, big, empty” tree. In recent years, it has been proved by practice that adopting the tree shape of “single layer and one heart” is better and basically overcoming the above drawbacks. For example, in the spring and autumn of 1983, we selected Ma Yazhuang Yali Pear Production Park (164.8 mu 4400 plants) and Zhouyuan Fang Ya Li Pear Production Park (16900 mu 2700 plants)