China's grain imports in 2011 surpassed 61 million tons,indicating that its overall self-sufficiency rate in grain was less than 90 percent. For the past few years,China has insisted that,to ensure national food secu...China's grain imports in 2011 surpassed 61 million tons,indicating that its overall self-sufficiency rate in grain was less than 90 percent. For the past few years,China has insisted that,to ensure national food security, 95 percent is the bottom line of the country's展开更多
文摘China's grain imports in 2011 surpassed 61 million tons,indicating that its overall self-sufficiency rate in grain was less than 90 percent. For the past few years,China has insisted that,to ensure national food security, 95 percent is the bottom line of the country's