In recent years,food security faces international and domestic situations.The rise in global food prices,rising energy prices,natural environmental factors,geopolitical and trade instability,the reduction of high-quality arable land and other factors have had an impact ...MORE In recent years,food security faces international and domestic situations.The rise in global food prices,rising energy prices,natural environmental factors,geopolitical and trade instability,the reduction of high-quality arable land and other factors have had an impact on China's food security.Although China's grain prod...