BEIJING: The fear of failing to grow enough corn, wheat or rice to feed its people has spurred China into action this year, but Beijing may be doing too little, too late to overcome the powerful forces of urbanization. Just as global grain markets grapple with ultralow stocks and record-high prices, China is battling to stem the destruction of its arable land due to urban sprawl, the growing scarcity of water and the exodus of labor to its booming cities by directing tens of billions of dollars to rural areas.