Yuan Longping, China's leading agricultural scientist, realized one of his 80th birthday wishes recently when his super grain brought yields of 13.9 tons of rice a hectare, setting a new world record for rice output. The rice breed, DH2525 (Y two superior No 2), produced a harvest of 13.9 tons a hectare during its trial planting in Longhui county in Hunan province.China plants about 29 million hectares of rice every year, with an average output of 6.3 tons a hectare, according to the National Bureau of Statistics.By 2010, super hybrid rice accounted for nearly 25 percent of the total acreage.
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