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炭疽叶枯病是近年苹果树上出现的新病害,在我国蔓延之势很快,目前生产上还没有探明有效药剂对其进行控制。为了筛选出防治苹果炭疽叶枯病的有效杀菌剂,明确其最适施药时期,笔者采用先接种后施药和先施药后接种两种方法,分别测试了6种药剂的内吸治疗效果和8种药剂的保护效果。现将试验情况介绍如下:接种苹果炭疽叶枯病菌的嘎拉叶片,于接种后的48小时开始显症,初期症状为直径1~4毫米近圆形的黑色病斑,病斑
The anthrax leaf blight is a new disease appearing on the apple tree in recent years. It spread rapidly in our country. At present, there is no proven effective medicament to control it. In order to screen out an effective bactericide for preventing and curing apple leaf blight of apple and define the optimum application period, the author used two methods of first inoculation and first inoculation after inoculation, and tested the effect of internal absorption of 6 kinds of medicaments respectively And 8 kinds of agents protective effect. Test conditions are introduced below: Galapagin leaves of apple anthracnose blight inoculated, 48 hours after inoculation began to show symptoms, the initial symptoms of 1 to 4 mm in diameter nearly circular black lesions, lesions