西红柿定植苗龄一般是80～90天,甚至更长,从而造成老小苗,影响发育,降低产量。根据我们的经验,无论是保护地或春露地,早熟种或晚熟种,凡定植4～5叶苗龄的西红柿皆长势旺,坐果集中,产量高;而定植带大 Seedling age of tomatoes is generally 80 to 90 days, or even longer, resulting in old seedlings, affecting development and reduce production. According to our experience, no matter in the protected area or the spring open field, the precocious species or the late-mature species, all the 4 to 5-year-old tomato plants are growing vigorously with concentrated fruit set and high yield;