【530.4 kg! Large-area ultra-high-yield hybrid rice seed production has reached a record high yield per mu] Today (7th), the Hunan Agricultural Society, in conjunction with the China Rice Research Institute, Wuhan University and other well-known experts and scholars from universities and units, conducted a production test in Sui, Shaoyang, Hunan. Ning County carried out on-site production testing activities for large-area super-high-yield hybrid rice seed production. It was measured that the large-area seed production demonstration plot of Super Daoshuang Liangyou 138 in Wuyang Town, Suining County, had a yield of 530.4 kilograms per mu, breaking the 1,000 kilogram mark for the first time. It is understood that the annual planting area of ​​hybrid rice in China has stabilized at more than 200 million acres. As of 2025, the cumulative promotion area of ​​hybrid rice in China exceeds 10 billion acres; however, the cost of hybrid rice seeds is high and the seed production yield has long hovered around 160kg/acre, which has become a prominent bottleneck restricting the sustainable development of China's hybrid rice industry.