Study On Ecological Regionalization Of Grape Varieties In Beijing

On the basis of investigating ecological resources of grape product areas in Beijing, the climatic data from 1971 to 2000 were analysized in detail and relationships between varieties and ecological environments were studied systematicly. The results of this study are as follows:1. According to the grape ecological requirements, eleven climatic factors which affect the growth,development,yield and quality of grape were selected. By means of systematic cluster, Beijing was divided into four regions. I:Yanqinï¼›II:Miyun, Pinggu, Huairouï¼›III:Shunyi, Tongxian, Daxing, Chaoyang, Fengtai, Fangshan, Cangpinï¼›and Iv:Haidian, shijingshan, Mentougou.2. The geographical situation, the present situation of viticulture and ecological conditions of the four regions were detailedly analysized and evaluated carefully, with the combinion of the phenophase and the analysis of the quality of grape varieties in some regions, finally, the development orientation and proper varieties were put forward.Yanqin:With the cool and dry weather, the area is suitable for developing European grape (Vitis vinifera) table grapes and wine grapes. it is a very important place to produce green and harmless products. Red and White table wine and Sparkling wine are suitable to develop there. Hail and strong winds are unfavorable factors for developing grape produce, so necessary measures should be taken to defend them actively.Miyun, Pinggu and Huairou:For table grapes, early and middle-matured hybrids between Vitis vinifera and Vitis labrusca should be selected and late-matured European grape with strong resistance to disease may be selected. With the confinement of accumulative temperature and rainfall, the area is not good for wine grapes, but some small-scale wine manors may be constructed by taking advantage of the rich resources of tourism there. The plain region of Shunyi, Tongxian, Daxing and Chaoyang:For table grapes, early and middle-matured hybrids between Vitis vinifera and Vitis labrusca should be selected and late-matured European grape with strong resistance to disease may be selected. It is suitable for developing species of American vine and hybrids between Vitis vinifera and Vitis labrusca used for juice. Fengtai, Fangshan, and Cangpin:For table grapes, early and middle-matured hybrids between Vitis vinifera and Vitis labrusca should be selected and late-maturity European grape with strong resistance to disease may be selected. Early and middle-matured European grape may be developed on the gentle slope and hill areas where It is cool and with a little rainfall to balance the supply of market. Considering the construction of the city of Beijing, grape production should be moderate in shijingshan and Haidian region. Mentougou, as the only pure mountain area in Beijing, Hybrids between Vitis vinifera and Vitis labrusca should be selected.