密植桃园的主干形修剪栽培试验

连续五年密植桃园的主干形修剪试验表明：主干形修剪技术用于密植栽培桃树早结果早丰产效果显著。‘春花’成苗定植后第二年产量达1300kg·666．7m-2，第三年为1500kg·666．7m-2，第四年为2250kg·666，7m-2，第五年为1750kg·666．7m-2；‘湖景蜜露’定植后第二年和第三年产量为1021kg·666．7m-2和1019kg·666．7m-2；‘锦绣’定植后第二年产量为120km·666．7m-2，第三年为1204km·666．7m-2，第四年为1876km·666．7m-2；‘沪463’定植后第三年产量为47．5kg·666．7m-2，第四年为2125kg·666．7m-2。主干形修剪夏季摘心可促进早期副梢的萌发，利用副梢坐果，均衡树势。主干形修剪对桃果实的品质有一定的影响，使果实相对变小，单果重减轻，要注意疏花疏果，加强肥水管理。

Experiment of Growing Peach Trees with Central Leader Training and Pruning System in the High Density Orchard

Results of 5-year-trial proved that growing peach trees with central leader training and pruning system in the high density orchard could obviously promote the trees early bearing and obtaining high yield. The production of per 666. 7m2 in the 2nd, 3rd, fourth and fifth year after planted for cv. Chunhua were 1300, 1500, 2250 and 1750 kg respectively; for cv. Hujingmilu were 1021 (in the 2nd year) and 1019 kg(in the 3rd year); for cv. Jinxiu were 120(in the 2ndyear) and 1876 kg (in the fourth year); for cv. Hu463 were 47. 5 (in the 3rd year) and 2125 kg(in the fourth year). Summer tipping could stimulate sprouting of secondary shoots, increasingthe fruit bearing wood and so the production. Such training and pruning system could have a negative effect on the fruit size, so thinning fruit is an important measure for obtaining high productionand quality.