旱地无病毒矮化苹果栽培技术研究

研究了无病毒矮化苹果和病毒感染苹果生长及结果的差异。通过无病毒矮化苹果在矮化中间砧全埋土、“刻剥拉”早果丰产及 15主枝细长纺锤形整形修剪等技术的研究创新 ,使无病毒矮化苹果在我国西北黄土高原地区首次大面积示范成功 ,示范推广 10 0 0 hm2 ,实现 6年生无病毒矮化红富士产量 45 t/ hm2。研究还总结了 12 ,15 ,2 0主枝的细长纺锤形树体结构等一系列量化指标 ,为同类地区推广提供了依据

Research on the cultivation technique of virus-free dwarf interstock apple treein dry areas

The virus free dwarf interstock apple trees have been demonstrated on a large scale in the dry areas.The yield of six year old virus free dwarf interstock "Red Fuji" apple trees is 45 tons per hectare,and more than 1 000 hm 2 of sample trees have be planted in recent years.The key technique is to cover the dwarf interstock by soil,and"cut bud gridle branch draw branch down" for early and high yield.Quantitative figures of slender spindle like trees of the 12 15 20 main branches are discussed.Based on these quantitative items,the virus free dwarf interstock apple trees have been growed in the simalar area.