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山河系是从美国引入的葡萄砧木品种。其特点为:1.抗根瘤蚜、葡萄扇叶病、根癌病。2.比贝达抗寒,根系能够抗-14℃,枝叶无病害。3.扦插极易生根,嫁接亲合力好,生长势极强。4.比贝达早开花10天以上,扦插当年可嫁接。
The mountain river system is a grapevine rootstock variety introduced from the United States. Its characteristics are: 1. Resistant to phylloxera, grape leaf fan disease, root cancer. Bibeida cold, root can be anti -14 ℃, leaves disease-free. 3 cuttings easily rooted, good affinity grafting, strong growth potential. 4. Beida than early flowering more than 10 days, cuttings that year can be grafted.