Cash Crop Production, Food Price Volatility, and Rural Market Integration in the Third World
用模型解释为何第三世界大农户比小农户更倾向种植经济作物，发现粮食自给能更好保障粮食安全，而市场整合可减少这种自给需求，对贸易自由化和农业技术政策有启示。
Abstract Large farmers in the Third World often devote to cash crops a larger share of their land than do small farmers. This paper suggests a possible explanation: even in the presence of food markets, Third World farmers' food security is best assured by food self‐sufficiency. A model of crop portfolio choice under multivariate risk is used to show that reasonable assumptions regarding risk and preferences reproduce the observed pattern. Simulations further indicate that food market integration reduces the need for food self‐sufficiency. Policy implications are drawn regarding domestic trade liberalization and agricultural technology.