The maximum yield of sea rice on saline-alkaline soil developed by China's "father of hybrid" Yuan Longping's team has reached 620.95 kilograms per mu (0.07 hectare), way beyond experts' expectations, People's Daily reported on Sept 29.

The test was carried out in the field at the Sea-Rice Research and Development Center in Qingdao, East China's Shandong province, on Sept 28.

The existing sea rice yield is only about 100 kilograms per mu, according to Yuan, which is not cost-effective for farmers. However, if the yield could be improved to 300 kilograms per mu, they would be much active in planting the rice.

Yuan said he is very satisfied that the sea rice yield has well exceeded 300 kilograms.

Rice is the first choice for improving saline-alkaline soil, of which there is 1.5 billion mu in China. About 300 million mu of that is exploitable. If one third of such land is used to plant the sea rice, the total yield could reach at least 30 billion kilograms, which could feed 80 million people in China, experts estimated.

Yuan also noted his and the institution's desire to help other countries develop hybrid rice to contribute to world food security and peace.