番茄“烂脐”病也叫顶腐病、蒂腐病、黑膏药。该病是一种生理病害,棚室栽培番茄常有发生,严重影响番茄的产量和质量。其发病的原因是前期水分充足,结果期水分缺乏,土壤水分忽干忽湿,水分供应失调造成的。在土壤过于粘重、盐分过多、天气干燥棚室内水分蒸发过大等情况下易发病。使用未经腐熟的生粪、人粪稀浓度过大引起烧根,使根系吸水受抑造成生理缺水时也易发病。另外,氮肥过量或磷、钾不足,特别是缺钙使幼果脐部细胞生理活动失常,从而加重此病的发生。 Tomato “rotten umbilical” disease is also called top rot, pedicle rot, black plaster. The disease is a physiological disease, greenhouse cultivation of tomatoes often occur, seriously affecting the yield and quality of tomatoes. Its incidence is due to adequate water early, the results of the lack of water, soil moisture Suddenly wet, water supply disorders caused. In the soil is too viscous, too much salt, dry weather inside the chamber evaporation is too large, etc. prone to disease. Undisturbed raw manure, human feces dilute the concentration caused by burning too much, so that the root system caused by inhibition of water absorption is also prone to physical water shortage. In addition, excessive nitrogen or phosphorus, potassium deficiency, especially calcium deficiency so that the young fruit umbilical cells physiological activity disorders, thereby aggravating the occurrence of the disease.