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一般欧亚葡萄品种根系在-5～-6℃土温就有冻害,严重时甚至冻死。但是“贝达”葡萄根系在土温-11℃、东北山葡萄根系在-16℃左右才发生冻害。为避免根系的冻害,北方葡萄产区在没有抗寒品种之前,采用抗害砧木,特别是用山葡萄这一类耐寒材料作砧木,不仅是一个行之效,带有方向性的措施,而且,据沈阳、吉林等地的经验,对许多葡萄品种,经过嫁接后,还有增加产量、提高品质的作用。
The general Eurasian grape varieties in the -5 ~ -6 ℃ soil temperature there is frost damage, severe or even frozen to death. However, “Beida” grape roots in the soil temperature -11 ℃, northeast mountain grape roots at -16 ℃ or so freeze damage occurred. In order to avoid the frost damage of the root system, the northern grape-producing areas should use the anti-harming stock before the cold-resistant varieties, especially the hardy materials such as the grape of the mountain as the root stock, which is not only effective but also directional, According to Shenyang, Jilin and other places of experience, for many grape varieties, after grafting, there are increased production, improve quality.