1. Yuan Longping has been engaged in hybrid rice research for half a century. He is not afraid of difficulties, willing to dedicate himself, work hard and pursue hard, and has made significant contributions to solving the problem of eating for the Chinese people. Mr. Wang's outstanding achievements not only belong to China, but also affect the world. (Xinhuanet review)

2. Academician Yuan Longping is the founder of China’s hybrid rice industry and a contemporary Shennong. For more than 50 years, we have been working hard and exploring unremittingly on the front line of agricultural scientific research, bringing green hope and golden harvest to mankind's use of scientific and technological means to overcome hunger. Not only has it contributed to solving the problem of subsistence and clothing for the Chinese people and ensuring national food security, it has also set a monument to world peace and social progress. (Sina Review)

3. Yuan Longping’s noble character of loving the motherland, serving the people wholeheartedly, and benefiting mankind is in line with the Communist Party of China’s ideological style of being of one heart and one mind. He keeps pace with the times and bravely The innovative spirit of reaching new heights, the strong will to pursue persistently without fear of hardships, the noble sentiment of being strict with oneself and indifferent to fame and fortune are models for contemporary Chinese people to learn from, and they are also the spirit of the times called for in the new century. (Comment by Jia Qinglin)

4. Yuan Longping is a true cultivator. When he was still a rural teacher, he already had the courage to subvert the world's authority; when he became famous all over the world, he still only focused on farming. Indifferent to fame and fortune, a farmer spreads wisdom and reaps wealth. His lifelong dream is to free everyone from hunger. (Comments from the China Science and Technology Awards Committee)

5. Yuan Longping devoted himself to the research of hybrid rice, invented the "three-line method" indica hybrid rice, successfully developed the "two-line method" hybrid rice, and created the super hybrid rice The technological system has enabled China's hybrid rice research to remain at the world's leading level. As of 2017, hybrid rice has been promoted on more than 9 billion acres in China, increasing rice production by more than 600 billion kilograms.

He has traveled to India, Vietnam and other countries many times to teach hybrid rice technology to help overcome food shortages and hunger. . Yuan Longping devoted his life to the research, application and promotion of hybrid rice technology. He invented the "three-line method" indica hybrid rice, successfully developed the "two-line method" hybrid rice, and created a super hybrid rice technology system, which has contributed to China's food security and agriculture. Make outstanding contributions to scientific development and world food supply. (Xinhuanet review)

Extended information

Main contributions

1. Yuan Longping took the lead in conducting research on the utilization of rice hybrid vigor in China. In the first paper he wrote, "Male Sterility in Rice," he proposed: "If you want to take advantage of hybrid vigor in rice, you should first use male sterility." His theory and research practice are a challenge to the classical genetics theory, denying the traditional view that "self-pollinated crops have no hybrid vigor" such as rice, and greatly enriching the theory and technology of crop genetic breeding.

2. Yuan Longping solved three major problems in the research of three-line hybrid rice.

First, the technical solution of "distant hybridization between wild rice and cultivated rice" was proposed, and an effective way to cultivate male sterile lines was finally found. In 1973, sterile lines, maintainer lines and The "three series" package of the restoration series.

The second is to develop a number of combinations such as the highly advantageous hybrid rice "Nanyou No. 2" and apply them on a large scale in production, becoming the first scientist in the world to successfully utilize hybrid vigor in rice.

The third is to break through the barrier of seed production. Past studies have shown that the outcrossing rate of rice is only 2.4%, and the seed yield of the first generation of hybrids is extremely low, far from the production requirements; the International Rice Research Institute began research in 1971. It was abandoned in 1973 because no one at the institute believed that the problem of seed production could be solved. The research team led by Yuan Longping successfully solved this problem, and the seed production yield has gradually increased, and now the highest yield has reached more than 300 kilograms per mu.

3. Yuan Longping proposed a hybrid rice breeding development strategy, that is, the method is from three lines to two lines and then to one line. The procedures are getting simpler and the efficiency is getting higher and higher; the level of hybrid vigor is from From inter-varieties to inter-subspecies and then to the utilization of distant hybrid vigor, the advantages are getting stronger and stronger, pushing hybrid rice to move to a new level step by step. This idea has been adopted by domestic and foreign counterparts and has become the guiding ideology for the development of hybrid rice breeding.

4. Yuan Longping solved some key technical problems in the two-system method. For example, in 1989, when the research on the two-line method encountered major setbacks, he proposed the starting temperature index for breeding practical phototemperature-sensitive nuclear sterile lines that would lead to sterility and a technical strategy for breeding, which brought the two-line hybrid rice research to a new stage. A trough.

Later, major technologies such as core seed production procedures and cold-water string irrigation propagation were studied and proposed, making the research on two-line hybrid rice finally successful and popularized. Since 1987, he has served as the responsible expert for the two-line hybrid rice technology research of the "863" project, presiding over China's collaborative research. In 1995, the research on two-line hybrid rice was successful. The yield of two-line hybrid rice increased by 5% to 10% compared with the three-line hybrid rice at the same maturity stage.

5. Yuan Longping designed a super-high-yielding plant model characterized by high canopy layer, short panicle layer and medium-large panicles and a technical route for cultivating super hybrid rice, and continued to make progress in super hybrid rice research. Significant progress has been made. In 1997, Yuan Longping carried out research on super hybrid rice. In 2000, 2004 and 2012, the first, second and third phase goals of 700 kg, 800 kg and 900 kg per mu of China’s 100-acre demonstration plot of super rice were achieved respectively.

In 2013, he launched the fourth phase of super hybrid rice target research on a 100-acre demonstration plot with a yield of 1,000 kilograms per mu, and planned to achieve the goal by 2020. At the same time, we will implement the "three varieties and four yields" high-yield project for super hybrid rice to promote the production and application of scientific and technological achievements.

Since 2007, huge production and income increases have been achieved. Seven provinces and cities in China have implemented it. Among them, the number of participating counties (cities, districts) in Hunan Province has increased from 20 to 50 in 2012. , covering an area of ??8.82 million acres. As of 2012, the cumulative demonstration and promotion area covers more than 20 million acres, increasing production by more than 2 billion kilograms, making new contributions to the sustained and stable increase in grain production [4].