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农产品绝大部分直接作为食品或经过初、深加工后成为食品供人们消费。“民以食为天，食以安为先”。随着我国经济社会的快速发展，人们生活水平的改善，食品安全问题越来越引起广泛关注。

Most agricultural products directly as food or after the beginning of deep-processed into food for human consumption. "Food to safety first." With China's rapid economic and social development, people's living standards improve, more and more food safety issues caused widespread concern. In recent years, agricultural product quality and safety issues continue to emerge, to consumers caused great physical and mental health threat, but also caused considerable damage to the industry, such as clenbuterol, Streptococcus suis, Zhushuizhurou, poisonous rice and other events. Not only affects the quality and safety of agricultural products to the people's health and lives, but also affect a country's agricultural market order and export trade of agricultural products, and even affect people on the economic and social security of expectations, thereby reducing social welfare.

目前，发达国家主要是通过立法、构建质量安全的检测体系、深化管理制度改革和追溯体系的完善○1等几个方面来严把农产品质量安全大门。Liddell(2001)比较了主要猪肉出口国和进口国的牲畜追溯系统,区分了牲畜追溯系统的追溯性、透明性和质量保障等概念,并指出不同的国家其牲畜住宿系统存在差异,认为可追溯系统的经济刺激因素有利于明确可追溯系统带来的经济利益程度。

At present, the developed countries mainly through legislation, build quality and safety inspection system, deepen the reform of management system and traceability system improvement ○ 1, and several other aspects to strict quality and safety gates. Liddell (2001) compared the major exporting and importing countries of pork livestock traceability system, the distinction between the livestock traceability system traceability, transparency and quality assurance concepts, and that different countries there are differences of their livestock accommodation system that can be traced back systematic economic incentives could help to define traceability system level economic benefits. Quality and safety of agricultural products in China has just started research management issues, related research small. Among them, Yuan Xueguo with the theoretical analysis of the adverse selection under asymmetric information, safety of agricultural products market in general will be pollution-free vegetable vegetables out of the market, resulting in a lemon market in the process. Zhou wing depth analysis of all aspects of food safety management and aspects of information asymmetry, theoretically demonstrated the government's food quality and safety management system is essentially a cost-benefit information management issues. Xiuqing proposed government food market from the traditional control methods should also direct the production process and product standards for quality control to gradually shift the control of information, through the disclosure of information, the provision of public information and education, etc. to establish an effective quality signal transmission mechanism, ensure food quality and safety goals.

本文主要利用需求供给模型比较了两种市场经济条件下的农产品质量安全问题，揭示了农产品质量安全事故频出的主要原因是农产品质量的信息不对称、明显的外部性特征和典型的公共物品属性, 而这些因素在现实的市场经济情况下是经常的、普遍的, 因此, 只有靠政府加大监管力度, 才能消除农产品质量安全问题。

In this paper, the use of demand supply model compares the two market economy under the conditions of quality and safety of agricultural products, agricultural products quality and safety incidents reveal frequent quality of agricultural products is mainly due to information asymmetry, obvious external characteristics and typical public goods , and these factors in the real market economy is o本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。