Technology is already enabling local producers such as Perry's Cider in Somerset to sell direct to Japan, she said, adding: "That's why it's so important improving rural road and rail and bringing near-universal access to broadband and mobile."
According to the CBI, Britain has the potential to export £7.4bn more food a year, a 40 per cent increase on the current figure.
"From the precision-farming and hands-free tractors of Riviera Produce in Cornwall to the award-winning Poskitts carrots in Yorkshire, we already have some of the world's best farmers," Truss said.
"We will promote our superb food and drink through the new Great British Food Unit, open overseas markets, and place food counsellors in our embassies like we have in Beijing."
Defra will also make 8,000 datasets publicly available over the next year, in what she described as "the biggest data giveaway that Britain has ever seen", adding: "Think what we can do with it. Wine lovers will be able to sip English bubbly made from the sweetest grapes because growers have found the best soil and slopes."
Meanwhile satellite imaging offers "huge opportunities in the area of environmental protection" and will also "enable us as a government to do more for less," she said. "We will be able to survey the country's crops without tramping the fields, meaning farmers get less bother from government inspectors."
On skills and recruitment, she said: "I want food and farming to be a top destination for high-flying graduates, as prestigious as medicine, as fun and stimulating as the gaming industry and as cutting-edge as Tech City."