Plowed up
After media exposure, the provincial government punished those involved and plowed up the test plot.
However, BT Shanyou 63 has still been widely found in the provinces of Hunan, Jiangxi, Zhejiang and Anhui.
And since 2006, more than 100 batches of food exported to Japan, South Korea and European Union have been found to contain BT Shanyou 63, Greenpeace said.
The green group urged the authorities to improve controls and monitoring.
China, the world's largest rice producer and consumer, has long planned to introduce GM rice. However, the public has expressed safety fears.
While genetic modification in crops can provide resistance to disease, pesticides and climatic conditions, opponents say risks have not been adequately identified.
In March last year, government scientists announced a further delay in the introduction of GM rice and corn.
"The crops have to be accepted by consumers and farmers," said Peng Yufa, a member of the GM crop biosafety committee under the Ministry of Agriculture.
Peng said that may take five years to achieve.
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