"Seven points of raw materials, three points of brewing"-It is said that the decisive factors of wine quality mostly depend on varieties and cultivation, and only a small part depends on the level of winemakers and winemaking technology and equipment. Without good grapes, no matter how good a winemaker is, he can't make top-class wine.

Soil-gravel soil is the best choice for growing grapes, and most top wineries in the world grow grapes on this soil. Most of this soil is formed on the hillside, so the river beach. Gravel soil usually has low groundwater level and no good water storage capacity; This is conducive to the full extension of grape roots, thus absorbing more substances in the soil. Poor soil is more conducive to the quality of wine.

Terrain-the terrain mentioned here refers to flat land, sloping land, valley, etc. A good vineyard should have a certain slope, sunshine and ventilation, which are beneficial to hydrophobic, absorb sunlight and prevent pests and diseases respectively.

Light-more light can make grapes do more photosynthesis, which is beneficial to the accumulation of nutrients and the health of plants; Of course, too much and too strong light will have a negative effect on grapes.

Precipitation-For grapes, the amount and distribution of precipitation will directly affect the quality of fruit. Usually, a good producing area should not have too much precipitation, not to mention too much precipitation in the flowering and ripening seasons of grapes. Therefore, the Mediterranean climate zone, which is warm and rainy in winter and cool and dry in summer, has become the best producing area for wine grapes.

Temperature-the same temperature also includes several meanings. It is generally believed that areas with annual accumulated temperature of 2500-3000 kcal, large temperature difference between day and night and not too hot in summer are beneficial to the better growth of grapes.

From the above points, we can easily see that the grape planting areas in the world are basically distributed within the range of 30-45 degrees south latitude and 30-50 degrees north latitude; Among them, the best producing areas are mostly concentrated in the Mediterranean climate zone.