研究了3年生葡萄杂交苗结果母枝粗度、留芽量与花芽分化的关系。结果表明，杂交后代植株结果母枝粗度为0.79～1.20 cm时，新梢结果系数达0.900以上，结果枝率达60%以上；结果母枝粗度为0.89～0.98 cm时，花芽分化最好，可达71%。葡萄杂交苗花芽分化集中分布在结果母枝第5～9芽，其中6～8芽是花芽集中分布的部位，平均分化率可达40.6%。

The relation between the diameter of fruit cane， leave bud quantity and flower bud differentiation of 3 years old grape hybrid seedlings was studied . The results shows that in order to have ideal fruiting rate， the fruiting cane should be in a suitable diameter . When fruiting cane diameter in 0.79～1.20 cm， Shoot fruiting coefficient is above 0.900， Shoot burliness ability above 60%； When fruiting cane diameter in 0.79～0.98 cm， flower bud differentiation is best， can reach 71% . The leave bud quantity has an appropriate range at the 5～9 bud of grape fruit cane， flower bud differentiation is centralized distribution at the 6～8 nodes， the average flower bud differentiation rate was 40.6% .

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甘现代农业产业技术体系专项(CARS-30-21)、甘肃省农业科学院农业科技创新专项(2012GAAS15-13)、农业部园艺作物生物学与种质创制重点实验室项目部分内容