Abstract:

Rural households’ pig production methods in our country have the features of small-scale, high degree of decentralization, original technology, backward infrastructure, lack of funds and so on. These features enable the edible pigs provided by rural households’ hog backyard methods to have harmful substances which can induce risk. In order to filter the harmful substances which were imported in the process of rural households’ pig hog backyard and control the risks effectively,(this article) uses fuzzy cluster analysis to extract risk levels in the process of rural households’ pig hog backyard from stratified sampling data, adopts fuzzy rough set theory mining the decision-making dependence attribute and knowledge rules of risk which was induced in the process of rural households’ pig hog backyard, generalizes the three dimensional risk structure in the process of rural households’ pig hog backyard according to the dependence attribute and knowledge rules, raises the safety system design principle filtering risk in connection with the risk structure, and constructs the security framework and the risk management framework of filtering risk in the process of rural households’ pig hog backyard using the corresponding relation of risk, security and control. The risk structure and risk control methods raised in the article apply to risk control of small-scale production process of various kinds of farm products and foods.