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本文运用HP滤波分解法对我国蔬菜的生产价格和零售价格波动上涨的特征进行了对比,发现零售价格增长速度更快、波动幅度更大。蔬菜生产价格和零售价格间存在相互影响的长期均衡关系。两价格传导的非对称性,是导致产销价格增长速度和波动特征差异的重要原因,菜农与蔬菜零售商市场地位的差异以及蔬菜需求弹性小,是导致产销价格非对性传导的根源。最后基于研究结论,提出了加强菜农组织化程度,完善信息服务体系的建议。
In this paper, the HP filter decomposition method is used to compare the characteristics of vegetable production price and retail price fluctuation in our country. It is found that the retail price is growing faster and fluctuating more. Vegetable production prices and retail prices affect each other between the long-term equilibrium relationship. The asymmetry of the two prices leads to the difference between the growth rate and the fluctuation of production and sales price. The difference of market position between vegetable growers and vegetable retailers as well as the small demand elasticity of vegetables are the root causes of the unanticipated sales and marketing price. Finally, based on the conclusion of the study, suggestions are put forward to strengthen the organization of farmers and improve the information service system.