论文部分内容阅读
兰花炭疽病是最常见、也是为害兰花最严重的病害,又称褐斑病、黑斑病,它主要为害兰叶和兰芽。发病初期,叶面上出现褐色斑点,后不断扩大成椭圆形或半圆形稍凹陷的轮纹状斑块,中心淡褐色或灰白色,边缘暗褐色。病斑干枯后散出孢子,传染性极强,能把原来好端端的清秀的兰叶侵害得斑斑点点,危害极大。笔者养兰近10年,为对付炭疽病,试过种种方法,觉得下列三种比较有效,这也是一个连续的步骤:
Orchid anthracnose is the most common, but also the most harmful diseases of orchids, also known as brown spot, black spot disease, it is mainly harmful to blue leaves and orchid buds. Early onset, the emergence of brown spots on the foliage, after continuing to expand into oval or semicircular slightly depressed wheel-shaped plaques, center light brown or gray, dark brown edge. Lesions spore after drying out, highly contagious, can the original good end of the delicate blue leaves infested spots, great harm. In recent 10 years, I have tried to deal with anthracnose and tried all kinds of methods. I think the following three are more effective. This is also a continuous step: