葡萄主要病害及防治

• 作 者: 帕提古丽·克依木
• 机 构: 吐鲁番市政园林局,
• 出 处: 农村科技
• 发表日期: 2006年03期
• 关键词: 葡萄霜霉病 油渍状 葡萄 油浸 霉状物 花蕾 斑点 病害 新梢 病主

一、葡萄霜霉病此病主要危害叶片、新梢、花蕾和幼果等幼嫩部位。叶片正面出现不规则淡黄色半透明油渍状小斑点,逐渐扩大呈黄绿色,多为数个小斑连成一个不规则或多角形的大病斑,并在叶背面产生黄白色的霜状霉层,病斑后期变成淡褐色。嫩梢同样出现油浸状病斑,表面有黄白色霉状物,但较叶片稀少。幼果感

First, grape downy mildew The disease mainly endanger the leaves, shoots, buds and young fruits and other tender parts. Irregular yellowish yellow translucent grease-like spots appear on the front of the leaves, which gradually expand into yellow-green color, and are mostly irregular spots or polygons with many small spots forming a yellowish-white creamy mildew on the back of the leaves , Lesions later became pale brown. Young shoots also appear oil-like lesions, yellow and white moldy surface, but sparsely leaf. Young fruit flu