河北庭院葡萄冬不埋土需具备几个条件（Hebei courtyard grape winter without soil, need to have several conditions）.doc

河北庭院葡萄冬不埋土需具备几个条件（Hebei courtyard grape winter without soil, need to have several conditions） Garden grape winter without soil, need a few conditions Along with the global warming, the temperature of the -15 buried snow in the north of our country is obviously northward, and the courtyard grapes in most areas south of Beijing, Tianjin, Tang and Qin Dynasties, the Great Wall, can not be buried cold. But the northern winter climate is affected by low temperature, drought and windy, some years do not bury Grape Garden will appear different degrees of frost injury, light eye death, some dry branches, late germination, weak growth, yield; or death or death of the whole plant branches. Therefore, to improve the cold resistance of grape, to ensure that the grapes do not bury the soil and keep cold through the winter, it is still a big problem in the field of grape cultivation technology. After years of practice, the author summed up some problems that should be paid attention to to improve the cold resistance of grape and the cold proof of the field grape: First, select cold resistant varieties It is better to choose the European and American hybrids with strong cold resistance, big ear, big grain, high quality and beautiful color, such as drunk gold, giant rose, high wife, pioneer, Beijing Asia and so on. The courtyard grape cultivation if there are special purposes, such as wine, juice, the best selection of strong cold resistance and cold resistance v.amuensis-european hybrids of the Eurasian species, such as northern Italy, alcohol and other grape varieties, take some measures to enhance the cold tolerance, for many years without winter bury, can the winter. But some weak cold resistance of the Eurasian species, such as red, heart-shaped seedless varieties, cultivated in the courtyard, winter not bury damage is very serious. Two, using cold resistant varieties as Rootstock Using cold resistant varieties as rootstock can improve the winter hardiness ability of scion var