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通过1992~1995年在离石试区王家山引种北斗苹果试验表明:北斗品种幼树期生长迅速、根系深而发达、成枝率中等、冠形中大。该品种较抗寒、抗旱,完全可以适应本地区气象和土壤条件;幼树期以中长枝结果为主,花序座果率约为11.3%;开始结果较晚,可采用多种措施控制树体生长;栽植不宜太密,栽植株数以825株/hm2为宜,有关北斗苹果果实品质抗病虫害能力等有待进一步观察。
The introduction of Beidou apples from Wang Jiashan in Lishi area during 1992-1995 showed that: the Beidou varieties grew rapidly during the sapling stage, with deep roots and developed roots with medium branching rate and medium crown size. The variety is more cold-tolerant and drought-resistant, which can adapt to the meteorological and soil conditions in this region. The young tree branches are mainly long and medium branches with inflorescence fruiting rate of about 11.3%. If the results are late, various measures Control the growth of the tree; planting should not be too dense, the number of plants planted to 825 / hm2 is appropriate, the fruit of Beidou apple pest resistance and other properties to be further observed.