In 2004, the yield of super hybrid rice was 800 kg per mu.
20 1 1, the yield per mu of super rice in Leifeng Village, Yanggu 'ao Township, Longhui County exceeded 900 kg.
20 16 huanbei village, longtian town, xingning city city, Meizhou city, Guangdong province, the yield per mu of the experimental field of the project reached1537.78kg (including early rice and late rice), setting a record for the highest yield per mu in the world and being the only experimental field for double cropping rice.
On April 12, Yuan Longping affirmed at the Sanya International Rice Forum: "This year, we are tackling the new target of 1 130 kg per mu, that is, per hectare 17 tons: I am sure it is 90% possible (17 tons)."
Academician Yuan Longping talks about the research goal of the fifth super rice. According to him, the yield of rice = biological yield × harvest index, and the harvest index of the existing semi-dwarf super rice has reached the ceiling and cannot be improved any more. We can only start with the biological yield, and then improve the yield.
Current Situation of Grain Output and Grain Reserve in China
As the second largest grain crop in China, thanks to the super hybrid rice in Yuan Longping, the rice yield in China has increased year by year. China's rice planting area is 3 1 10,000 hectares, and China's grain output has never been enough to eat until now. In 2065,438+06, China's rice output was about 4,654,380,700 tons, and its stock was 654,380,580 tons. The average annual consumption of rice in China is about 97.5 kilograms, and the rice stock alone is enough for 654.38+0.6 billion people in China to eat for more than a year, not to mention that rice is only a grain stock, and there are other grains.
Since the grain yield is so high now, what's the use of cultivating super hybrid rice with higher yield?
People take food as the sky and food is the foundation of the country. Although China's grain output and reserves are ideal at present, the land for grain cultivation in China is decreasing year by year, and fewer and fewer people are engaged in agricultural cultivation. I will only take the farm management mode in the future. Under this premise, a lot of cultivated land that is inconvenient to cultivate will be abandoned, and we can only make up for the shortage of cultivated land by increasing production.
China's population base determines China's food policy. Increasing grain output will improve the country's comprehensive strength and enhance its international competitiveness.
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