灰霉病是近 10年来为害设施栽培蔬菜的重要病害之一，早春、晚秋季节在关中和陕北普遍发生，主要危害番茄叶、花、茎和果实，常引起大量落花落果，对番茄产量和品质影响很大，若不及时防治可减产 1至 4成。该病寄主范围广，除危害葫芦科、茄科蔬菜外，菜豆、韭菜、洋葱均能受 Botrytis cinerea is one of the most important diseases to plant vegetables in the past 10 years. Early spring and late autumn are common in Guanzhong and northern Shaanxi. The main damage to tomato leaves, flowers, stems and fruits is caused by a large number of fallen flowers. Great impact on quality, if not timely control can cut 1 to 4 percent. The disease host a wide range, in addition to endanger Cucurbitaceae, Solanaceae vegetables, beans, leeks, onions can be affected