<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          Global EditionASIA 中文雙語Fran?ais
          China
          Home / China / This Day That Year

          This Day, That Year: Sept 16

          China Daily | Updated: 2019-09-16 10:03
          Share
          Share - WeChat

          Editor's note: This year marks the 70th anniversary of the founding of New China.

          On Sept 16, 2002, the first International Rice Congress kicked off in Beijing, attracting more than 1,000 scientists and officials worldwide to discuss issues concerning the development of the rice industry, as seen in this item from China Daily.

          Dubbed the "Olympics of Rice Science", it has been held every four years. The fifth congress was held in Singapore last year.

          China has become a world leader in hybrid rice, which can yield 15-20 percent more than unmodified rice.

          Developed by Chinese scientists led by Yuan Longping, who is known as "the father of hybrid rice", China was the first country to successfully produce hybrid rice for temperate climates in the 1970s.

          In 1979, techniques for making hybrid rice were introduced into the United States, the first case of intellectual property rights transfer in the China's modern history.

          The crop is now grown in more than 30 countries and regions, with the total area under cultivation surpassing 7 million hectares.

          By 2003, half of China's rice production was hybrid strains.

          Yuan set world records in hybrid rice yield - in 1999, 2005, 2011 and 2017.

          Covering 16 million hectares, or about 53 percent of China's rice acreage, rice output has grown from 6 metric tons per hectare in the 1970s to 15 metric tons now.

          The new variety has made a solid contribution to helping feed the Chinese people - who account for 21 percent of the global population, while the country has only 7 percent of the world's arable land.

          Yuan, now 90, continues his research. At Qingdao's Saline-Alkali Tolerant Rice Research and Development Center in Shandong province, which he leads, a successful experiment has been carried out in planting rice in the Dubai desert.

          It is the first time that rice has been grown in a desert, and is seen as a major contribution to food self-sufficiency, global food security and improving the environment of desert regions.

          Yuan said one of his dreams is to transform about 667,000 hectares of saline-alkaline land and produce at least 30 million metric tons of rice every year enough to feed an additional 80 million people.

          Top
          BACK TO THE TOP
          English
          Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
          License for publishing multimedia online 0108263

          Registration Number: 130349
          FOLLOW US
           
          主站蜘蛛池模板: 亚洲另类激情专区小说婷婷久| 国产成人精品亚洲精品日日| 少妇被粗大的猛进出69影院| 黑人巨大亚洲一区二区久| 国产精一区二区黑人巨大| 蜜桃草视频免费在线观看 | 亚洲一区二区中文av| 97超级碰碰碰免费公开视频| 久久综合开心激情五月天| 成全我在线观看免费第二季| 最新精品露脸国产在线| 久久99精品中文字幕在| 亚洲熟妇激情视频99| 亚洲欧美精品一中文字幕| 亚洲国产精品午夜福利| 精品无人乱码一区二区三区的优势| 日韩欧美一卡2卡3卡4卡无卡免费2020| 中文字幕少妇人妻精品| 少妇人妻av无码专区| 日韩精品成人区中文字幕| 亚洲精品乱码久久久久久蜜桃不卡 | 亚洲 都市 无码 校园 激情| 高清国产美女av一区二区| 国产粉嫩一区二区三区av| 午夜福利影院不卡影院| 亚洲一区二区约美女探花| 精品国产福利一区二区在线| 97久久综合区小说区图片区| 国产偷窥熟女高潮精品视频| 国产精品亚洲精品国自产 | 久久亚洲综合精品成人网| 护士大爆乳双腿张开自慰喷水| 国产香蕉尹人在线视频你懂的| 日韩一区二区三区精品区| 久久99国产精品久久99软件| 欧美日韩v| 狠狠噜天天噜日日噜视频麻豆 | 插入中文字幕在线一区二区三区| 国产女人在线| 亚洲精品无码久久一线| 久久成人综合亚洲精品欧美|