番茄苗期常见的病害有猝倒病、早疫病及立枯病等。猝倒病俗称“小脚瘟”,主要症状是幼苗茎基部缢缩,幼苗在子叶凋萎之前大片倒伏,此病的主要发生期在第一片真叶出现前后;立枯病亦称“霉根”,病害幼苗常造成茎基部缢缩变细,茎叶干枯死亡,但幼苗一般不倒状,在苗床湿度较高情况下,茎基部出现淡褐色的霉状物,此病在整个育苗期都能发生,但主要在育苗的中后期发病;早疫病又叫“黑茎病”,是番茄育苗 Common diseases of tomato seedling damping-off disease, early blight and blight and so on. Damp down disease commonly known as “small foot plague”, the main symptom is shrinking stem base of seedlings, seedlings fall before the cotyledons large, the disease occurs in the first true leaf occurs before and after; “, Disease often caused by stems shrinkage thinning stems, stems and leaves died, but the seedlings are generally not inverted, in the case of high seedbed humidity, the base of the stem appears light brown mildew, the disease throughout the breeding period Can occur, but mainly in the latter part of nursery disease; early blight is also called ”black stem disease" is a tomato nursery