With improving quality and standards of people's lives, people gradually increase health awareness. Many people favor the subject of foreign fruit, in which blueberry is much more welcome. As the blueberry fruit is expensive, processing technology constantly improving, and the fruit benefit to the physical health, planted area of blueberry is increased year by year around the world. In recent years, Chinese blueberry industry is gradually being taken seriously. In North China, due to the winter cold and dry...