A trial carried out from 2000 to 2002 showed that it was suitable to control such a yield per hectare of Vi-tis amurensis Rupr. in Zuojia of jilin or alike region. Art output of 10-12 tons per hectare for making high grade wine of V. amurensis. and an output oi 13-14 tons per hectare for making general sweet-red grape wine of Vitis amurerisis must be controlled in Zuojia area and alike cold region; while a yield of 14-15 tons per hectare for making high grade wine of V. amurensis and an output of 16-17 tons...