一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网

Third-generation hybrid rice achieves high yields in China

Source: Xinhua| 2019-10-22 19:22:03|Editor: Xiang Bo
Video PlayerClose

CHANGSHA, Oct. 22 (Xinhua) -- The third-generation hybrid rice developed by Yuan Longping, the "father of hybrid rice," and his team underwent its first public yield monitoring from Monday to Tuesday and achieved a major breakthrough in output.

The final yield came to 1,046.3 kg per mu (about 0.07 hectares), based on two plots of land in Qingzhu Village under the city of Hengyang in central China's Hunan Province.

Experts agreed that the rice has a stout stem, fertilizer tolerance, lodging resistance, large spike and more grains.

"One of the most important characteristics of the third-generation hybrid rice is that it has a shorter growing period," said Qian Qian, deputy director of the China National Rice Research Institute.

Qian said some previous high-yielding hybrid rice varieties in China took 160 to even 180 days from sowing to harvesting, while the figure was shortened to around 125 days for the new variety.

"A shorter growth period can reduce the use of pesticides and fertilizers, save resource costs and improve production efficiency," Qian said.

Unlike the previous two generations of hybrid rice which required a large amount of water and fertilizers as well as demanding growing conditions and technological support, the third-generation hybrid rice is easier to be cultivated by ordinary farmers.

The soil, altitude and climate of the test site were not "ideal conditions" carefully selected beforehand but were close to the paddies of ordinary farmers, according to Zhao Bingran with Hunan hybrid rice research center.

The whole process was organized by the Hunan Society of Agronomy under the supervision of experts from the Chinese Academy of Agricultural Sciences, the China National Rice Research Institute, Hunan's agriculture and rural affairs department and multiple Chinese universities.

Yuan, who developed the world's first hybrid rice in 1974, has set multiple world records in hybrid rice yields in previous years.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001384937831


一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网 国产视频观看91 国产00在线视频国产 国产综合色视频久久久 久久成人国产精品一区二区 高清无码免费黄色网站