Construction of major grain producing areas and the coordinated development of regional economy Construction of major grain producing areas and the coordinated development of regional economy. 并列题名：Construction of major grain producing areas and the coordinated development of regional economy Research on the fiscal and taxation policies to deepen the coordinated development of regional economy Construction of ecological megalopolis and coordinated development of regions 并列题名：Research on the fiscal and taxation policies to deepen the coordinated development of regional economy Research on division of domestic value chain and coordinated development of regional economy Liang shi zhu chan qu jian she yu qu yu jing ji xie tiao fa zhan/: The construction of major grain producing areas and the coordinated development of regional economy, liang shi zhu chan qu jian she yu qu yu jing ji xie tiao fa zhan/: the construction of major grain producing areas and the coordinated development of regional economy, Industrial Clusters and coordinated development of regional economics