关键词: 钾肥价格；定价权；协整关系；价格传导 

Abstract: Compared with those countries who completely depend on imported potash fertilizer in the global potash fertilizer market, China has specific reserve and production capacity in potash at about 40% dependence on imported since 2013. This paper uses static market balance theory to discuss the influence of domestic potash fertilizer on imported potash fertilizer's price and studies the conducting path of domestic and global potash fertilizer prices by means of spatial price conducting theory. China rises its production by 1%, the prices in the major markets will drop 12.6% to 21.0%, which is outstanding at the 1% statistic level. A co-integrated relation exists between China's domestic and global potash fertilizer prices with domestic price as weak exogenous order and global as endogenous order, meaning a one-way conducting mechanism between domestic and global potash fertilizer prices. This paper suggests China continue to boost potash resource exploration, fully use the conducting mechanism and market linkage of domestic potash fertilizer to global to guarantee the domestic potash fertilizer supply, and increases China's competitiveness in global potash fertilizer market. 

Key words: potash fertilizer price, pricing power, co-integration, price conducting mechanism