www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
Opinion / Op-Ed Contributors

Science has bigger say in GM food

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

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

Most Viewed Today's Top News
New type of urbanization is in the details
...
主站蜘蛛池模板: 免费看片aⅴ免费大片 | 性视频网站在线 | 欧美一区二区在线播放 | 久艹在线观看视频 | 国产一区二区在线视频播放 | 中国人免费观看高清在线观看二区 | 精品自拍视频在线观看 | 久久亚洲国产精品五月天 | 精品香蕉99久久久久网站 | 真人一级毛片 | 久久精品免费一区二区视 | 日韩国产欧美在线观看 | 性做久久久久久久免费观看 | 毛片免费全部播放一级 | 成人午夜私人影院入口 | 国产成人精品免费久久久久 | 久久综合久久88 | 精品免费在线视频 | 经典国产乱子伦精品视频 | 亚洲成人精品久久 | 欧美日韩视频精品一区二区 | 亚洲视频一区在线观看 | 能直接看的一级欧美毛片 | 欧美精品成人久久网站 | 国产成人a福利在线观看 | 国产99视频精品免费观看7 | 日本精品久久久久中文字幕 1 | 日本三级香港三级人妇gg在线 | 美美女下面被cao爽 美女131爽爽爽做爰中文视频 | 色老头久久网 | 久青草国产手机在线观 | 国产成人在线视频观看 | 国产午夜永久福利视频在线观看 | 欧美一区二区亚洲 | 911国产自产精选 | 波多野结衣在线观看高清免费资源 | 国产精品亚洲精品一区二区三区 | 日本三级久久 | 免费一级毛片麻豆精品 | 一区两区三不卡 | 免费在线观看a级片 |