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雷达卡
英文文献：Spatial and Temporal On-Farm Risk Management - Crop Production Scheduling and Index Insurance Strategies-农场的时空风险管理-作物生产计划和指数保险策略农业技术转移决策支持系统(DSSAT)是一种农学作物生长模型，用于寻找在过去10年里乔治亚州米切尔、米勒和李县棉花生产的最优作物管理策略
英文文献作者：Lin, Shanshan,Mullen, Jeffrey D.,Hoogenboom, Gerrit
英文文献摘要：
An agronomic crop growth model, Decision Support System for Agro-Technology Transfer (DSSAT), is used to find optimal crop management strategies for cotton production in Mitchell, Miller, and Lee Counties in Georgia during the past 10 years. Planting date and irrigation threshold are the two variables optimized to maximize farmer's expected utility. A decreasing absolute risk aversion - constant relative risk aversion (DARA-CRRA) utility function is used to examine crop management decision that can be influenced by changes in inter-temporal risk behavior. Comparison is made from management perspective - one is dynamic crop management strategy that varies each year; one is static (constant) strategy over 10 years. Based on the best crop management strategies, index insurance products are designed to help farmers further reduce production risk. The impact of geographical basis risk was assessed by comparing the risk reduction generated from index insurance contracts based on different weather stations; the impact of temporal basis risk is assessed by allowing separate contracts to be purchased for different sub-periods during the entire period.
种植期和灌溉阈值是农户期望效用最大化的两个优化变量。减少绝对风险厌恶-不变相对风险厌恶(达拉- crra)效用函数用于检验跨期风险行为变化对作物管理决策的影响。从管理的角度进行了比较:一是动态的作物管理策略，每年变化;一个是10年的静态(不变)战略。基于最佳的作物管理策略，指数保险产品旨在帮助农民进一步降低生产风险。通过比较基于不同气象站的指数保险合同所产生的风险降低，评估地理基础风险的影响;通过允许在整个期间内为不同的子期间购买不同的合同来评估时间基础风险的影响。
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