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0引言近几年,阿勒泰地区通过种植打瓜高产、优质、抗病品种,规范栽培模式,力求打瓜高产、优质、高效,种植面积不断扩大。但是在打瓜生产上,白粉病发生严重,部分田块片状死秧和烂瓜,发病速度快,生长中、后期容易发生和流行,造成严重损失。1打瓜白粉病的病原
0 Introduction In recent years, the Altay region endeavored to cultivate high-yield, high-quality and high-efficiency melon by planting high-yielding, high-quality and disease-resistant varieties and standardizing the cultivation mode. However, in the melon production, powdery mildew occurred serious, some field pieces of dead seedlings and rotten melon, the incidence rate is fast, growth, the late prone and popular, resulting in serious losses. 1 melon powdery mildew pathogen