美国专家成功培育出一种耐干旱的大豆品种。这种大豆是利用中国的野生大豆和美国西部的普通大豆通过杂交培育而成的。其特点是叶片上的白色叶毛要比普通大豆的多得多,浓密的白色叶毛能反射强烈的阳光,因此可以减少叶片水分的蒸发。试种结果表明,这种大豆在生长时所需要的水分仅 American experts have successfully cultivated a drought-tolerant soybean variety. The soybeans are cultivated through crossbreeding using wild soybeans in China and common soybeans in the western United States. It features white leaves on the leaves much more than regular soybeans, and thick white leaves reflect intense sunlight, thus reducing leaf water evaporation. The results of the trial showed that the water needed for growing this soybean was only