三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

Make me your Homepage
left corner left corner
China Daily Website

Science has bigger say in GM food

Updated: 2013-10-29 07:18
By Shenggen Fan ( China Daily)

Whether genetically modified foods can help eradicate food insecurity and poverty has been the subject of contentious and polarizing debate.

Science has bigger say in GM food

The backdrop to this debate is a global agricultural system that is facing increasing challenges from rising climatic variability, population growth, urbanization, and natural resource depletion. According to the Food and Agriculture Organization, food production needs to increase by 60 percent by 2050 in order to feed 9 billion plus people. Scientists and policymakers alike are searching for innovative ways to ensure sufficient access to nutritious food, today and for generations to come. Unlike previous science-based initiatives to raise productivity in the agricultural sector (such as the Green Revolution), the potential of GM crops to combat food security and poverty challenges is muddled in hotly contested discussions.

The considerable expansion of GM crop varieties worldwide over the last two decades is indisputable. The total area devoted to GM crops has increased 100-fold from 1.7 million hectares in 1996 to 170 million hectares in 2012. Developing countries now grow more GM crops than developed countries (in terms of area), largely driven by Brazil's recent fast-paced adoption of GM crops. China is home to approximately 4 percent of the total global area devoted to GM crops. Soybeans, maize, cotton, and canola dominate GM crops globally, whereas China's focus is on cotton, papaya, and poplar.

To date, a wide body of (peer-reviewed) scientific impact studies shows that commercially-available GM crops are safe for people and the environment. According to a 2010 review of the safety of GM crops by the European Union, "the main conclusion to be drawn from the efforts of more than 130 research projects, covering a period of more than 25 years of research, and involving more than 500 independent research groups, is that biotechnology, and in particular GMOs, are not per se more risky than, for example, conventional plant breeding technologies." Other international and national scientific bodies, such as the World Health Organization, have reached the same conclusion.

The documented impacts of GM crops point to many productivity, environmental, and socio-economic benefits among large- and small-scale farmers alike. Genetic engineering can boost yields by developing plant varieties that have increased resistance to stresses such as disease, pests, and droughts, lower fertilizer and water application, and higher nutritional quality.

Previous Page 1 2 Next Page

 
8.03K
 
...
主站蜘蛛池模板: 精品国产亚洲一区二区三区 | 激情综合婷婷 | 精品国产中文一级毛片在线看 | xvideos国产| 自由xxx色视频18 | www.好色.com| 成年人黄色在线观看 | 久久九九热re6这里有精品 | 蜜臀在线观看 | 久久日本精品一区二区三区 | 亚洲综合欧美 | 欧洲色图亚洲色图 | 久久亚洲福利 | 婷婷国产天堂久久综合五月 | 国产精品欧美日韩精品 | 久久国产福利 | 免费视频成人国产精品网站 | 成人国产在线观看 | 国产一区2区| 成人亚洲欧美 | 精精国产xxxx视频在线播放器 | 国产午夜不卡 | 国产黄片毛片 | 国产色图视频 | 成人网视频免费播放 | 国产一区曰韩二区欧美三区 | 黄色片不卡 | 特色一级片 | 色xxxxx| 波多野结衣黑人系列在线观看 | 欧美一区二区三区精品国产 | 久久综合免费视频 | 一区二区三区视频网站 | 黄色大片一级片 | 亚洲日本高清影院毛片 | 日本高清在线一区二区三区 | a级在线视频 | 欧美日韩精品一区二区三区视频在线 | 国产精品1024免费看 | 欧美最刺激好看的一级毛片 | 国产一级毛片大陆 |