Operations Research and Management Science ›› 2022, Vol. 31 ›› Issue (6): 176-181.DOI: 10.12005/orms.2022.0199

• Application Research • Previous Articles     Next Articles

Coordination Mechanism Research of Contract Agriculture Quality Classification Model under Weather and Output Impact

WEN Kun1, YU Xing2   

  1. 1. Jiangxi Administrative Institute, Nanchang 330003, China;
    2. Hainan Vocational University of Science and Technology Haikou 571126, China
  • Received:2018-01-25 Online:2022-06-25 Published:2022-07-20

天气影响产出下订单农业质量分级模式协调机制研究

温焜1, 余星2   

  1. 1.江西行政学院,江西 南昌 330003;
    2.海南科技职业大学,海南 海口 571126
  • 作者简介:温焜(1980-),男,江西石城人,博士,副教授,研究方向:产业结构与决策优化;余星(1981-),女,湖北咸宁人,博士,副教授,研究方向:金融工程与决策优化。
  • 基金资助:
    国家社科基金资助项目(17BJL066)

Abstract: It is assumed that the company takes the costs of seed, fertilizer and pesticide, and then tries to establish the profit maximization decision model of the company with participation constraints of the farmers, considering the influence of truncated normal distribution natural condition on the actual output of agriculture. In the model, farmers voluntarily provide the land and labor force under the constraint of participation, and then carry out the production according to the technical guidance of the company. The influence of different natural conditions on the optimal purchase price and corporate profit for the company is discussed, and the difference between concentrated sale model and quality grading sale model is analyzed. It is found in this study that when the strength of the losses under adverse weather is harder than the that of the yield on favorable weather conditions, and with the increase of weather risk, contract price will be increased and company's profit will be declined. On the contrary, the order price will be decreased with the increase of natural risk, and the company's profit will be increased. So since quality grading sale is more profitable than centralized sale, it is recommended that the company should purchase at a flat price and then sell with quality classification model.

Key words: quality classification, contract agriculture, natural condition, truncated normal distribution

摘要: 本文假定公司承担种子、化肥、农药等成本,农产品实际产出受截断正态分布自然条件影响,在农户参与性约束条件下,建立公司利润最大化决策模型。模型中农户在满足参与约束下自愿提供土地及劳动力,并按照公司技术指导进行生产。探讨了不同自然条件对最优收购价格和公司利润的影响,分析了集中销售与质量分级销售模式的区别。通过研究发现,不利天气造成的减产比有利天气增产的强度大时,随着天气风险的增大,定单价格增大、公司利润降低;反之,定单价格随着自然风险的增大而减少、公司利润增大。由于质量分级销售比集中销售模式对于提高公司利润总是有利的,建议公司按统一价格收购后以质量分级模式进行销售。

关键词: 质量分级, 订单农业, 自然条件, 截断正态分布

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