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China Focus: Third-generation hybrid rice achieves high yield

2020-11-3 13:47

 

Yuan Longping, the "father of hybrid rice", is seen on a screen during video link at an experimental demonstration field in Hengnan County, central China's Hunan Province, Nov. 2, 2020. The third-generation hybrid rice developed by Yuan Longping, the "father of hybrid rice," and his team achieved a yield of 911.7 kg per mu (about 667 square meters) in an experiment in central China's Hunan Province. (Xinhua/Chen Zeguo)

CHANGSHA, Nov. 2 (Xinhua) -- The third-generation hybrid rice developed by Yuan Longping, the "father of hybrid rice," and his team achieved a yield of 911.7 kg per mu (about 667 square meters) in an experiment in central China's Hunan Province.

"I would be very happy if it exceeds 880 kg. Now it exceeded 900 kg, I am extremely happy," Yuan said after the yield was announced Monday.

Plus an early season rice yield of 619.06 kg, the same plot in Qingzhu Village, Hengnan County, has produced a yield of 1,530.76 kg per mu in a year. The output is equivalent to 22.96 tonnes per hectare.

Last year, the same late hybrid rice variety, "sanyou No.1", made a single-cropping yield of 1,046.3 kg per mu on the same plot.

Hunan is a major rice producer in China, where farmers plant double-cropping rice.

"High yield and resistance to disease, cold and lodging are the advantages of the third generation hybrid rice, compared with the previous two generations," said Li Xinqi, a researcher at Hunan Hybrid Rice Research Center and host of the third-generation hybrid rice project.

This year's high yield of the double-cropping rice has been made under unfavorable conditions of low temperature and shorter durations of sunlight, Li said.

Li Qiusheng, an agronomist with the agriculture and rural affairs bureau in Hengnan County, said that according to meteorological data during the critical period of rice growth, 43.85 effective sunshine hours were recorded this year, compared to 187.8 last year.

"The village was not particularly chosen for the test of the new generation hybrid rice. Besides, the rice did not receive any special care, which is not much different from normal farming by ordinary farmers," Li said.

Under similar conditions, yields of local double-cropping rice averaged between 700 kg and 800 kg per mu, while the new hybrid rice exceeded 1,500 kg per mu.

Li Jianwu, an expert with the Hunan Hybrid Rice Research Center, said the expert team had visited the experimental fields only twice from sowing to harvesting, in contrast to the long-term guidance rendered to rice farmers in the past.

"The most prominent feature of the third-generation hybrid rice is that it gives a full play to the advantages of hybridization. Its own vitality can help save farmers' cost and labor," he said.

China now feeds around 20 percent of the world's population, with less than 9 percent of the world's arable land.

Yuan, who developed the world's first hybrid rice in the 1970s, has set multiple world records in hybrid rice yields in previous years, making great contributions to the food security of China and the world.

Yuan's team is still working on the third-generation hybrid rice combinations and conducting studies for the simplified cultivation of the rice, aiming at high yields with less use of fertilizers.

Yuan said he wants to ensure the third-generation hybrid rice variety boasts "the comprehensive strength to promote a greener and more sustainable development of China's rice production with higher quality and yield."

 

2020年11月2日,“杂交水稻之父”袁隆平在湖南省衡南县的一处试验示范田里直播。“杂交水稻之父”袁隆平和他的团队在中国中部湖南省的一项试验中培育出的第三代杂交水稻亩产达到911.7公斤(约667平方米)。(新华社/陈泽国)


新华社长沙11月2日电“杂交水稻之父”袁隆平和他的团队在中国中部湖南省进行的一项试验表明,由袁隆平和他的团队培育的第三代杂交水稻亩产达到911.7公斤。


“如果超过880公斤,我就很高兴了。现在已经超过了900公斤,我非常高兴,”袁在周一宣布产量后说。


加上早稻产量619.06公斤,衡南县青竹村同地块年亩产1530.76公斤。产量相当于每公顷22.96吨。


去年,同一杂交晚稻品种“三优1号”同地单季亩产1046.3公斤。


湖南是中国主要的水稻生产国,那里的农民种植双季稻。


“高产、抗病、抗寒、抗倒伏是第三代杂交稻与前两代相比的优势,”湖南杂交稻研究中心研究员、第三代杂交稻项目主持人李新奇说。


李说,今年双季稻的高产是在低温和日照时间较短的不利条件下取得的。


衡南县农业和农村事务局的农学家李秋生说,根据水稻生长关键期的气象数据,今年的有效日照时数为43.85小时,而去年为187.8小时。


“这个村庄并没有被特别选中来进行新一代杂交水稻的测试。此外,大米没有得到任何特殊照顾,这与普通农民的正常种植没有太大区别。”


在类似条件下,当地双季稻亩产平均在700 - 800公斤之间,而新型杂交水稻亩产超过1500公斤。


湖南杂交水稻研究中心的专家李建武说,从播种到收获,专家团队只到试验田两次,这与过去对稻农的长期指导形成了鲜明对比。


“第三代杂交水稻最突出的特点是充分发挥了杂交的优势。它本身的生命力可以帮助农民节省成本和劳动力。


中国现在用不到世界9%的耕地养活了世界上20%的人口。


袁隆平在上世纪70年代研制出了世界上第一种杂交水稻,在过去几年里,他在杂交水稻产量方面创造了多项世界纪录,为中国和世界粮食安全做出了巨大贡献。


袁隆平的团队仍在研究第三代杂交水稻组合,并对这种水稻的简化栽培进行研究,目的是在较少使用化肥的情况下实现高产。


袁说,他希望确保第三代杂交水稻品种拥有“综合实力,以促进中国水稻生产更绿色、更可持续的发展,更高的质量和产量。”

 

来自: xinhua