The determining of biochemical conntents ofgrape leaves showed that with disease indexes to be high, Protein content, soluble sugar were gradually low, but superoxide dismutase (SOD) content was increase.

• 随着发病程度逐渐加重，葡萄叶片内可溶性蛋白质、可溶性糖含量逐渐下降，而超氧化物歧化酶活性则呈上升趋势。