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英文文献：The State Contingent Approach to Farmers' Valuation and Adoption of New Biotech Crops: Nitrogen-Fertilizer Saving and Drought Tolerance Traits-农民评估和采用新生物技术作物的国家条件方法:氮肥节约和耐旱特性
英文文献作者：Jaramillo, Paul E.,Useche, Pilar,Barham, Bradford L.,Foltz, Jeremy D.
英文文献摘要：
We used a state contingent approach to give a detailed analysis of the uncertainty surrounding seed trait adoption. Our framework emphasizes the role of timing and information in farmers’ adoption decisions. The inherent embeddedness of seed traits results in timing restrictions and the inability of post-planting adjustments, this in turn results in farmers necessarily engaging in a game with nature. Two main types of traits we identify are supplementing traits and stabilizing traits – classification into each category is directly related on the mobility of the production factor the trait intends to substitute. Supplementing traits allow for acting after nature (i.e., ex post) while stabilizing traits are better modeled as acting before nature (i.e., ex ante). The type of trait results in different determinants of the farmers’ WTP function.
我们使用一种状态或有方法来详细分析种子性状采用的不确定性。我们的框架强调了时机和信息在农民收养决定中的作用。种子特性的内在嵌入导致了时间限制和无法进行种植后调整，这反过来又导致农民必须参与到与大自然的游戏中。我们确定的两种主要类型的性状是补充性状和稳定性状——每一类的分类直接与性状所要替代的生产要素的流动性有关。补充特性允许在自然之后行动(例如，事后)，而稳定特性则被更好地建模为在自然之前行动(例如，事前)。不同的性状类型决定了农户的意愿转移功能。
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