鱼腥草为三白草科多年生草本植物,既是食材,又可入药。鱼腥草因有一种特殊的气味,有驱虫防病作用,病虫害相对较少,是一种理想的无公害蔬菜,但有时会发生叶斑病,且一旦发生,可导致根茎平均减产20%,有些田块秋季减产达70%。发病症状:在生长中、后期经常大量发生,主要危害叶片,发病初期,叶面出现不规则或圆形病斑。病斑边缘紫红色,中间灰白色,上生浅 Houttuynia is a perennial herbaceous plant, both as food, but also medicine. Houttuynia because of a special smell, a deworming disease prevention, pests and diseases is relatively small, is an ideal pollution-free vegetables, but sometimes occurs leaf spot disease, and in the event of rhizomes can lead to an average reduction of 20% In some fields, the output of some fields will be reduced by 70% in autumn. Symptoms: In the growth, the late often occur in large quantities, the main hazard leaves, the early onset, irregular or round leaves of lesions. Lesions edge purple, the middle of gray, superficial students