ChemicalEngineeringNews 2 0 0 3年 81卷 14期 4页报道 :虽然 2 0 0 3年美国的玉米、大豆和棉花的总种植面积不会有什么变化 ,但根据预测 ,2 0 0 3年美国的基因工程作物的种植面积将有所扩大。例如 ,美国农业部最近的报告宣称 :美国农民种植的抗虫和耐除草剂的工程玉米品种的 ChemicalEngineeringNews 200 2003, Volume 81, Number 4, Page 4 Although there will not be any change in the total planted area of ​​corn, soybean and cotton in the United States in 2003, it is predicted that in 2003, genetic engineering in the United States Crop acreage will be expanded. For example, a recent report from the U.S. Department of Agriculture states that the amount of insect-resistant and herbicide-tolerant corn varieties grown by American farmers