From 65438 to 0964, Academician Yuan Longping, inspired by natural hybrid rice, published a paper on the utilization of heterosis in rice, which denied the traditional view that self-pollinated crops had no heterosis. In the mid-1970s, the scientific and technological research team headed by him completed the three-line matching, successfully cultivated hybrid rice and applied it to production on a large scale.
Since then, he put forward the strategy of continuous innovation in hybrid rice breeding, from interspecies to subspecies to taking advantage of distant hybridization, from three-line method to two-line method to one-line method. He deeply studied the new field of hybrid rice-two-line hybrid rice, which was successfully studied in 1995 and developed a series of supporting technologies. The yield of two-line hybrid rice at the same maturity stage was 5% ~ 10% higher than that of three-line hybrid rice.
1997, based on the international concept of "super rice", he put forward the technical route of "super high-yield breeding of hybrid rice", which achieved good results in the experimental field. Now the yield per mu is more than 800 kilograms, and it is japonica rice, which attracts worldwide attention.
With the joint efforts of agricultural science and technology workers all over the country, from 1976 to 20 10, more than 6 billion mu of hybrid rice was planted, increasing the rice yield by more than 600 billion kilograms. In recent years, the annual planting area of hybrid rice in China is about 240 million mu, accounting for nearly 57% of the total rice area and 65% of the total rice output, which has remarkable social and economic benefits.
Scientific research achievements:
2065438+On May 22, 2008, the demonstration field of organic film mulching direct seeding test in Sanya Rice National Park passed the acceptance test, and the yield per mu was 1065.3 kg, setting a record for rice yield per unit area in Hainan Province.
On June 2, 2020, the yield per mu of hybrid rice 165438+ led by Yuan Longping from Zhuqing Village, Hengnan County, Hengyang City, Hunan Province reached 1530.76 kg, including 665438 kg of early rice and 9 16548 kg of the third generation hybrid late rice variety.
More important than figures is that this yield calculation fully shows the characteristics of the third generation hybrid rice which is more suitable for actual production, thus contributing to further ensuring national food security.
Reference to the above content: Baidu Encyclopedia-Yuan Longping