The great grain-producing provinces(the main producing areas) are the main body of grain production and the main source of marketable grain,and it shoulders the responsibility of ensuring national food security and maintaining social stability.Against this background,it is very necessary and urgent to assess and quantify the contribution of the great grain-producing provinces to national food security.The papers designed an index system to evaluate the contribution of the great grain-producing provinces from the production,distribution and consumption,and used the AHP to determine target weigh...
