在棚（室）茄果类蔬菜育苗中，常以茎粗节短，叶大肥厚，叶色浓绿，根须多且色白粗壮，无病、虫害，无损伤为壮苗。但有时常因水肥管理不当，温度过低等原因，造成秧苗生长缓慢，发育不良，叶片小而形成僵苗病。患了僵苗病的秧苗一般表现茎细发硬、叶小带黄色、根少、色暗、不 In shed (room) solantry vegetable nursery, often stem short section, large leaf thick, dark green leaves, roots and more color and thick, disease-free, pests, no damage for strong seedlings. But sometimes due to improper management of water and fertilizer, the temperature is too low and other reasons, resulting in slow growth of seedlings, poor growth, small leaves and the formation of stiff Miao disease. Sickle seedlings suffering from the general performance of stems thin hair hard, yellow leaves small, less root, dark color, no