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The double season yield per mu of hybrid rice broke new records.
What does 1500 kg per mu mean?
Economic Daily China Economic Net Reporter Liu Lin Xie Yao
On November 2, the 3rd generation hybrid rice combination experiment and demonstration base in Hengnan County, Hunan Province, ushered in late rice production. The average late rice yield was 911.7 kg per mu, plus the average early rice yield measured in July was 619.06 per mu. Kilograms, the double season hybrid rice developed by Yuan Longping’s team, “the father of hybrid rice”, broke the 1500 kg mark, setting a new record again.
3,000 cats per mu can feed more than five people
On the morning of the 2nd, at the “Sanyou No. 1” Third Generation Hybrid Rice Experimental Demonstration Base in Qingzhu Village, continuous rain did not block people’s enthusiasm for the harvest. More than 10 academics and experts from across the country participated in the on-site production trial. During the production test process, the experts determined three production fields by lottery and supervised production tests and acceptance throughout the process. At 12:26, after a rigorous production measurement process, the final results of the field measurement were released, with an average yield of 911.7 kg per mu. Before this, the average yield of early rice varieties grown on the same base was 619.06 kg per mu. This means that the double season yield per mu of hybrid rice grown on the same base has reached 1,530.76 kg.
At the Hunan Hybrid Rice Research Center, which is more than 200 kilometers from the experimental base, 90-year-old scholar Yuan Longping learned of the scene through a video connection. “For rice, the climate this year is very bad. With this climate, late rice can reach a yield of eight to nine hundred kilograms per mu, which is a very remarkable result.” After hearing the results of the production test, Yuan Longping was very excited. What does it mean to produce 3,000 cats per mu of seasonal rice? It means that I can feed 5 more people, and it also means that I am one step closer to my dream of enjoying the coolness under the grass.
Previously, the hybrid rice studied by Yuan Longping and his team repeatedly broke world rice yield records of 700kg, 800kg, 1000kg and 1149kg. It is understood that the third generation hybrid rice technology is considered by Yuan Longping as the key to breaking the “ceiling” of yield per mu. In 2019, the pioneering 3rd generation hybrid rice combination “Sanyou No. 1” was grown as late single season rice in Hengnan and achieved a yield of 1046.3 kg per mu, achieving a breakthrough in rice yield. late single season organic conventional. In 2020, in the same plot, continue with the experiment of super high yield of double cropping late rice.
After research, the number of spikelets per mu at the demonstration sites is more than 50 million, among which the number of spikelets per mu in Hengnan reaches 58 million. Especially in the southern rice areas this year that encountered extreme weather during the grain filling period, the third generation hybrid rice “Sanyou No. 1” showed strong cold tolerance and high yield.
The third generation of hybrid rice is super “resistant to fighting”
“The characteristics of high yield, disease resistance, cold resistance and lodging resistance are the advantages that the third generation hybrid rice generally has compared to the previous two generations. This is also the production test under extreme weather conditions, which can also exceed the yield of double-crop rice per mu. The key reason is 1500 kg, “said Li Xinqi, host of the third-generation hybrid rice project of the Hunan Hybrid Rice Research Center.
Academician Yuan Longping presented the “Super Hybrid Rice Improvement Research Plan” to the State Council in 1998 and started research on China’s super hybrid rice. At present, the National Research Center for Hybrid Rice Engineering Technology has established a third generation mature hybrid rice improvement technology system, selected a batch of sterile third generation hybrid rice lines, and cultivated “Sanyou No. 1 ”and other strong and excellent combinations. .
As a new type of hybrid rice, third generation hybrid rice is prepared using common recessive male sterile lines as female parents and conventional varieties and lines as male parents. The third generation hybrid rice sterile line not only has the advantages of stable fertility of the sterile line of the three-line method (first generation) and the free combination of the sterile line of the two-line method (second generation), but which also exceeds the three-line sterile line. The mating group is limited and two-line sterile line breeding and seed production have the disadvantages of risk. “This is an ideal way to use rice heterosis in the future,” Yuan Longping said in an interview with reporters. Compared with the fertilizer and water requirements for the previous two generations of hybrid rice, the third generation of hybrid rice seed production and propagation is very simple and more prominent. Its characteristic is to make the most of its hybrid advantage, its own vigorous vitality can save cost and energy for farmers, and it is more conducive to industrialization, from experimental field to ordinary farmers.
Hold the bowl of rice tighter
Food security refers to the survival of 1.4 billion Chinese. With grain in hand, don’t panic in my heart. The double season yield of hybrid rice per mu has exceeded 1500 kg. This is not only a breakthrough in rice breeding, but also a sign that China’s hybrid rice cultivation technology continues to lead the world, fully demonstrating the national achievements of scientific and technological innovation.
“Ensuring food security depends on increasing the yield per unit area and expanding the area. The annual yield per mu of double-crop rice has exceeded 3,000 cats.” An arrow has two birds with one stone. “Effective measures for the area.” On November 3, experts from Yuan Longping’s team said in an interview with reporters that, especially in the year of the new corona pneumonia outbreak, the production of staple foods like rice faced extreme weather that had not been seen in many years. Hybrid rice research has achieved such results. It is even rarer.
Based on these results, Yuan Longping proposed the “3000 Jin Project”, that is, from 2021, an annual rice production of two crops of 3000 Jin per mu will be launched in 8 southern provinces. “This is of great strategic importance to ensure China’s food security and support the country’s construction and development. The next step is to make progress. The goal is to achieve a yield of 1200 kg per mu for one-season rice and of 2000 kg per mu for double season rice. ‘Hexia’s Dream in the Cool’ “. Yuan Longping, who successfully completed the “grand examination”, once again proposed a new “examination question”.
