久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

  Home>News Center>China
       
 

New hybrid rice developed
By Cao Li (China Daily)
Updated: 2004-10-22 00:14

Shanghai research centre has developed the world's first hybrid rice capable of producing high yields in dry areas.

Drought-resistant rice needs 50 per cent less water than normal rice and can produce as much as 7,571 kilograms of rice per hectare, about the same as ordinary rice.

"We are to send it to the Ministry of Agriculture for final testing. Hopefully it will start being widely planted in 2006," said Luo Lijun, director of the Shanghai Agrobiological Gene Centre.

While plantations of drought-resistant rice have been around since ancient times, they are usually few and with low yield.

Drought resistant rice occupies only 13 per cent of all rice fields in the world and one per cent in China.

However,the country is facing an increase in dry weather patterns.

In northern China, there is an average 60 per cent chance of spring droughts while south of the Yangtze River the odds are 40 per cent.

During summer, that number shoots up to 70 per cent in the Northeast, where autumn droughts are frequent.

"The regional or seasonal droughts have greatly reduced rice production every year," said Luo.

The availability of water in China is about one quarter of the world's average, about 2,400 tons per capita,placing the country 109th in the world.

This lack of water results in losses of approximately 200 billion yuan (US$24 billion) every year.

Agriculture accounts for about 80 per cent of the total water usage, 70 per cent of that is rice.

"We are hoping that drought-resistant rice will be widely planted to alleviate the country's serious lack of water," said Luo.

"It may end up replacing normal rice," said Luo.

Experts said that the country's growing population will need about 3 trillion kilograms of rice per year by 2030. China now produces less than 2 trillion kilograms.

It is estimated that there are about 1.3 million hectares of land in the middle and low reaches of the Yangtze River which are either dry or depend on precipitation and can only be planted with hybrid, drought-resistant rice.

China now has approximately 20 million hectares of deserts, barren lands with high concentration of salt, and dry land in southern mountainous areas.

"If those 20 million hectares can be exploited, they will give us about 40 billion kilograms more rice every year," said Luo.



 
  Today's Top News     Top China News
 

Police learning to deal with kidnapping

 

   
 

Blast kills 56 miners, traps 92

 

   
 

Figures highlight safety situation

 

   
 

IMF pressures China on flexible yuan

 

   
 

Typhoon kills 66 in Japan

 

   
 

Kids pick Kerry to be the next president

 

   
  Blast kills 56 miners, traps 92
   
  "Golden Week" holidays loses favour: survey
   
  Chinese art galleries to see "golden time"
   
  Beijing not to change one-child policy
   
  Official: Global talents welcome to China
   
  Guangdong reports income growth
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  Related Stories  
   
Edwards disputes rice on Iraq invasion
   
Early rice harvests up 8.8% to 32.1m tons
   
Research guarantees adequate rice supplies
   
Rice defends comments on Iraq nuke threat
   
The dream of China's "rice king"
   
'Super rice' set to increase output
   
`Super rice' set to increase output
  News Talk  
  It is time to prepare for Beijing - 2008  
Advertisement
         
主站蜘蛛池模板: 成人免费观看视频久爱网 | 全部毛片 | 国产一区二区三区四区五区 | 最新国产毛片 | 毛茸茸年轻成熟亚洲人 | 亚洲综合精品一二三区在线 | 国产性大片黄在线观看在线放 | 成人看片黄a在线观看 | 久久久久欧美精品网站 | 思99re久久这里只有精品首页 | 青青草国产免费久久久91 | 亚洲天堂国产 | 韩国特级毛片 | 亚洲在线免费免费观看视频 | 亚洲在线看 | 一级做a爰片久久毛片鸭王 一级做a爰全过程免费视频毛片 | 久久久免费观成人影院 | 一级黄色片aaa | www.99热| 男人的天堂精品国产一区 | 亚洲国产美女视频 | 欧美视频三区 | 亚洲依依成人综合在线网址 | 在线观看片成人免费视频 | 手机看片日本 | 最刺激黄a大片免费观看 | 欧美在线观看一区二区三区 | a级毛片免费观看网站 | 日韩一区二区三区在线 | 国产成人精品视频午夜 | 成人国产精品免费视频不卡 | 精品久久久在线观看 | 巨大热杵在腿间进进出出视频 | 黄色片日本人 | 成人永久免费视频网站在线观看 | 美女被靠视频免费网站不需要会员 | 欧美a一级片 | 欧美亚洲国产一区 | 成人欧美一区二区三区视频xxx | 欧美日韩精品一区三区 | 99国产精品久久久久久久成人热 |