美国大旱和国内的粘虫病害导致玉米欠收,玉米实物和期货价格都一路“疯”涨起来价格“疯”涨农业靠天吃饭,天灾总是难免。今年夏天,美国遭遇持续干旱天气,48个州中有2/3的区域遭遇中度以上干旱灾害,创半世纪以来之最。美国作为世界最大的农产品出口国,大豆、玉米等农产品的供给状况对国际粮食市场影响很大。2011年,美国玉米的产量占全球玉米产量的36%,出口量占全球交易量的39%。美国旱灾造成粮价上涨,今年6月以来,国际玉米价格飙升50%,已升至历史高点。8 The United States drought and domestic insects cause the disease caused by the army owe corn, corn and futures prices are all the way “mad ” rise up the price “mad ” rise agriculture dependent on the weather, natural disasters are always inevitable. This summer, the United States is experiencing prolonged dry weather, with two-thirds of the 48 states facing moderate-to-moderate droughts, the highest rate in a half-century. As the world’s largest exporter of agricultural products, the supply of agricultural products such as soybeans and corn in the United States has a great impact on the international grain market. In 2011, the U.S. corn production accounted for 36% of global corn production and its export volume accounted for 39% of global trading volume. The droughts in the United States have caused food prices to rise. Since June this year, the price of international corn soared 50% and have risen to historic highs. 8