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摘心时间对结果新梢,一般在盛花前3~5天摘心,最晚在初花期进行。对落花落果比较严重的品种,如巨峰、紫玫瑰等品种,可在花前8~10天摘心。凡第一次摘心后,叶片达不到所需数量的新梢,待长出副梢后,留足叶片,再在副梢上进行第二次摘心。对营养枝和培养枝,则一次性留足12~15片叶摘心即可。摘心方法若干果农在葡萄新梢摘心时,只掐去顶尖。这种摘法是不可取的,起不到摘心应起到的作用。因为葡
Topping time on the results of shoots, usually 3 to 5 days before the full bloom in mind, at the latest early flowering stage. Flowers on the more serious drop varieties, such as Jufeng, purple roses and other varieties, 8 to 10 days before topping in the heart. Where the first time topping, the leaf can not reach the required number of shoots, to be grown after the shoots, leave enough leaves, and then in the secondary shoot for the second topping. On the nutrition and cultivation of branches, then one-time leave 12 to 15 leaves topping heart can. Topping method Some fruit growers in the grapes topping, only pinch to the top. This kind of pick-up is not desirable and can not achieve the purpose of topping. Because of Portugal