The 2010 Shanghai World Expo. is first held in developing country. It is estimated that there'll be 75 million people coming into Shanghai, which has an effect on the demand of vegetable. To aim at the supply of vegetable at World Expo. ,the dissertation gives the analysis on quantity, quality and safety, circulation of vegetable.In the aspect of quantity, it concludes that the nature, land area and quantity of inhabitants have a great influence on the supply and demand. It also calculates the elasticity and advises that the vegetable supply should be in accordance with the seasons and variety. It forecasts the demand of vegetable at World Expo. and presents the counter-measurements about the cultivation form and vegetable bases.About the quality and safety, based on the game models, it takes into consideration the developing practice, and establishes a supervision system of the vegetable quality and security by drawing lessons from other activities and exhibitions.Finally, referring to the experiences of foreign countries and considering the practice of circulation, the dissertation creates the conception of one core, two channels, three parts and three supports. Then it establishes an circulation system to ensure the steady, safe and efficient supply of vegetable. |