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

China develops sustainable agriculture

Updated: 2011-08-25 10:57

(Xinhua)

  Comments() Print Mail Large Medium  Small 分享按鈕 0

STOCKHOLM-- The proportion of agricultural water usage in China decreased by 15 percent from the level 10 years ago thanks to new technologies, said a Chinese agricultural expert on Wednesday.

As most grain production areas locate in northern China while the abundant rain and water stay in the South, the uneven distribution of water and grain production has been a key challenge to China, Professor Mei Xurong from Chinese Academy of Agricultural Science(CAAS) said in an exclusive interview with Xinhua during the World Water week in Stockholm.

Thus a lot of measures have been taken in a bid to use water more economically over the past decade, including the well-known spraying irrigation technique and usage of plastic covers.

"Plastic cover helps contain rain water in the land and the water evaporates through the plants. By this way, the production has been substantially increased with limited rain water," said Mei.

Take the northwest Gansu Province, a drought-frequent area, as an example. Farmers there can harvest 897 kilograms corn with 300 millimeter rainfall, or 1,000 kilograms corn with only 250 cubic meter of water, compared with 1,000 cubic meter of water used for the same production in other areas.

Utilization of recycled water from urban areas has also been experimented. "If the waste water has met the treating standards, then it can become a good water source complement for agriculture or for refilling the ground water," said Mei.

To make Chinese agriculture more sustainable, China has begun to utilize the traditional organic fertilizer again with modern technology, such as slicing the straw of corn, wheat or rice and putting it back to mix in the soil by machines.

"As a result, farmers don't need to use plenty of chemical fertilizer anymore," Mei said.

He proposed that environmental engineering technology, such as planting with greenhouses, should be used more broadly, with an aim of saving land while increasing production.

As Deputy Director General of Center for Water Resources and Conservation Technologies of CAAS, Professor Mei said China would continue its efforts in technical innovation in saving both water and land as well as other related resources in agriculture.

During the World Water Week, Chinese water experts also presented China's successful rain water harvesting system in Beijing's Olympic Village and the water management efforts in Songhua River, northeastern China.

During the week-long annual conference which opened here on Monday, issues relating to water resources are to be discussed.

主站蜘蛛池模板: 免费永久在线观看黄网 | 国产日韩精品一区在线不卡 | 欧美成人特黄级毛片 | 久久在线观看免费视频 | 国产成人亚洲综合欧美一部 | 国产欧美日本在线观看 | 精品国产成a人在线观看 | 国产欧美一区二区精品久久久 | 亚洲国产成a人v在线观看 | 成人免费黄色网址 | 免费中文字幕 | 毛片1毛片2毛片3毛片4 | 亚洲精品天堂自在久久77 | 欧美成年人视频 | 国产一二三区精品 | 国产精品久久九九 | 在线观看日本www | 免费毛片视频网站 | 自拍偷自拍亚洲精品10p | 久久亚洲国产精品五月天 | 最新国产毛片 | 亚洲精品韩国美女在线 | 在线欧美 | 精品久久久久久综合日本 | 波多野结衣视频免费观看 | 三级色网| 毛片成人永久免费视频 | 国产成人经典三级在线观看 | 日韩欧美一区二区在线 | 能在线观看的一区二区三区 | 欧美激情精品久久久久久久久久 | 拍真实国产伦偷精品 | 亚洲女人被黑人猛躁进女人 | 手机看片精品国产福利盒子 | 免费观看欧美一级高清 | 性做久久久久久久免费观看 | 久久精品毛片 | 日本亚欧乱色视频在线网站 | 一级片www | 久久九九有精品国产56 | 成人a毛片高清视频 |