The FAO expert also praised China for its important role in keeping food prices stable on the world market.

China, which has long held a policy of remaining self-sufficient in grain production, has become a major factor in stabilizing the global grain price, he said.

The total output of grain in China reached 434 million tons in 2006, up 95 percent from 222 million tons in 1977, said Fang, citing a report by the FAO.

Meanwhile, the world's total output of grain grew from 1.123 billion tons to 1.935 billion tons during the same period, an increase of 72 percent, according to the report.

As the most populous country in the world, China has successfully fed a population making up about 20 percent of the world's total. The country's significance for the world's grain security is self-evident, Fang added.