蔬菜秧苗在育苗时由于温度、湿度、水分控制不当，致使秧苗发生徒长，能给蔬菜生产造成严重不良影响。徒长的秧苗定植后会因受大风等不良气候的影响，造成断茎，缓苗时间长，缺苗断垅，从而减产、降低经济效益。番茄茎秆有很强的次生根再生能力，茎与土壤接触处均可生根，... Vegetable seedlings in nursery due to temperature, humidity, water control improper, resulting in elongated leggy seedlings, vegetable production can cause serious adverse effects. Legitimate seedlings planted will be affected by bad weather such as gale, resulting in broken stems, Huanmiao long, lack of seedlings break, so as to reduce production and reduce economic benefits. Tomato stalk has a strong secondary root regeneration ability, stems and soil contact at the root can be, ...