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以番茄品种“佳粉17号”为试材,通过营养液栽培试验,探讨了在氮、磷、钾缺素条件下番茄幼苗的形态指标、植株生物量变化及缺素症状。结果表明:缺素处理对番茄幼苗生长影响显著,番茄幼苗在缺素处理时其株高、主根长、植株鲜重均明显降低;而根冠比却显著升高,且地上部分表现出各种营养元素缺乏时的特有症状,从而为番茄栽培中营养水平判断提供理论依据。
With tomato variety “Jiafen 17 ” as test material, the morphological indexes, plant biomass changes and deficiency factors of tomato seedlings under nitrogen, phosphorus and potassium deficiency were studied through nutrient solution cultivation experiment. The results showed that the effect of the deficient treatment on the growth of tomato seedlings was remarkable. The plant height, main root length and plant fresh weight of tomato seedlings decreased significantly when the lack of treatment, while the ratio of root to shoot increased significantly, and the aboveground parts showed various Nutritional elements of the symptoms of lack of time, so as to provide a theoretical basis for judging the nutritional level of tomato cultivation.