葡萄的一年多次结果在生产上有一定的应用价值,特别是在植株受到冻害,霜害或其它原因主梢产量遭受损害或不足时,可以利用夏芽副梢或冬芽二次梢来弥补产量。在树势较旺的情况下,主梢能达到正常的产量与质量时,也不利用副梢来提高产量。在河北昌黎地区,7月上旬能开花的果穗都能正常成熟。凤凰51是早熟品种,在昌黎7月上中旬即可成熟,二次果,甚至三次果都能正常成熟。 1.激发冬芽萌发结果 在开花前3～6天,在主梢花序上留5～7片叶子摘心,并抹除其余所有副梢,迫使主消最顶端的冬芽萌发,待冬芽二次梢露出花序后,在花序上留2～3片叶摘心。有时,为了提高和保证 Grape many times a year results in the production of a certain value, especially in the plant frost damage, frost damage or other reasons, the production of the main crop damage or lack of damage, you can use summer buds or winter bud secondary tip to make up for the output . In the case of more vigorous trees, the main shoot can reach the normal yield and quality, do not use secondary shoots to increase production. Changli in Hebei Province, early in July to flowering ear can mature normally. Phoenix 51 is a precocious species, mature in Changli in mid-July, secondary fruit, and even fruit of three times can mature normally. 1. stimulate the winter bud germination results 3 to 6 days before flowering in the main shoot inflorescence leave 5 to 7 leaves topping, and erase all the other shoots, forcing the top of the main winter buds germination until the two buds exposed winter buds After inflorescence, leave 2 to 3 leaves in the inflorescence topping. Sometimes, in order to improve and guarantee