一区二区三区在线国产视频,色婷婷综合久久久中文一区二区,久久中文字幕视频、最近更新,国内精品一区二区三区在线观看,精品久久久久亚洲综合网,精品亚洲一区二区三区视频观看,男女啪啪午夜福利视频,简单视频免费播放在线观看,国产自拍免费视频网站

By Chuck Abbott From Successful Farming   3/8/2017

　　The world’s largest farm exporter, the U.S., is also a global leader in agricultural innovation. Consider GMO crops grown on nearly half of U.S. cropland and on 440 million acres in more than two dozen nations.

　　U.S. preeminence overshadows a startling change: China leads the U.S. by a large margin in government funding of food and ag research and development.

　　China began pouring money into agricultural R&D at the same time that U.S. funding from federal and state sources stagnated and, about a decade ago, began to decline.

　　According to three USDA economists, China surpassed the U.S. in public funding in 2009 and had a 2-to-1 advantage in 2013. They say reduced U.S. spending “may have negative implications for agricultural productivity” when dealing with new pests and diseases and with climate change.

　　“The effects of a decline in public agricultural R&D are likely to become more pronounced over time if the pace of fundamental advances in agricultural sciences slows,” say economists Matthew Clancy, Keith Fuglie, and Paul Heisey in a USDA magazine. “Slippage of U.S. funding in agricultural R&D also carries implications for U.S. engagement with the global research community.”