兰花娇贵,易遭病虫危害,须精心管护。炭疽病此病是兰花最常见的病害,主要为害叶片,后期病斑上产生黑色小点,终致病叶枯黄。该病多发于5～6月梅雨季节和9～10月秋雨多或台风多的年份,高温闷热天气特别是时晴时雨的天气,或从植株上方浇水以及通风不良,土壤粘重积水,植株被冻害等 Orchids delicate, susceptible to pests and endangers, must be carefully managed care. Anthracnose The disease is the most common disease of orchids, the main damage leaves, the latter part of the black spots on the lesion, the end of the disease yellowish brown leaves. The disease occurs in May to June rainy season and 9 to October autumn or more typhoons in the year, hot and humid weather, especially sunny weather, or from the top of the plant watering and poor ventilation, soil water sticky , Plants are frozen and so on