我们在生产中经常会发现一些无病虫害却生长发育不良的仙客来,它们很可能是患上了营养不良症,用术语说也就是缺素症(缺乏某种或某几种元素)。可通过外观特征直观地诊断出来。缺氮叶片数量少、叶色淡绿、叶薄、球茎偏大,严重时叶片变小、叶色黄绿、生长弱。缺磷叶片灰暗无光泽、叶色深绿,严重时叶片僵直、植株矮小。缺钾新叶正常,老叶发黄,花梗较短、花色浅,严重时叶缘焦枯、花易凋谢。缺铁新叶浅绿色至黄绿色,严重时整株叶片黄绿色、叶肉变黄。缺钙叶片和花梗下折、新叶边缘变褐,严重时球茎内导管变褐、根变短。缺镁老叶先失绿变褐、花梗短且基部粗,严重时新叶也失绿变褐、开花数明显减少。缺硼新叶变厚,严重时叶片不规则卷曲,花蕾小且干。缺铜新叶叶尖坏死至枯萎发黑,严重时老叶也出现上述症状。缺锰新叶和老叶同时失绿,严重时叶面出现坏死斑、花变小。缺钼老叶叶脉间失绿,严重时叶缘坏死,叶面出现坏死斑。缺锌叶片小且密生,严重时植株矮小、开花晚。从以上症状我们可很快诊断出仙客来患的是哪种营养不良,在 In our production, we often find cyclamen without pests and diseases, which are likely to suffer from malnutrition. In terminology, they are also known as deficiency (lack of one or several kinds of elements). Visual features can be visually diagnosed. The number of nitrogen-deficient leaves, light green leaves, thin leaves, bulbs large, severe leaves smaller, yellow-green leaves, growth is weak. Phosphorus phosphorus leaves dull, dark green leaves, severe leaves stiff, short plants. Potassium new normal leaves, yellow leaves old, short pedicel, light color, severe leaf margin scorched, easy to fade. New iron deficiency light green to yellow-green, yellowish green when the whole plant leaves, yellow leaves. Ca follicles and pedicels under the fold, the new leaf brown edge, serious when the bulb inside the tube brown, shortens. Magnesium deficiency of the first greenish brownish brown oblate, pedicel short and thick base, the new leaves are also serious greenish brown, flowering significantly reduced. New boron deficiency thickening, irregular leaf curl serious, bud small and dry. New copper leaf tip necrosis to withered black, old leaves are also serious when the above symptoms. Manganese-deficient new leaves and old leaves at the same time lost green, severe necrotic spots appear on the leaves, flowers become smaller. Molybdenum old leaf veins between the green, serious leaf margin necrosis, necrosis of the leaves appear necrosis. Zinc-deficient leaves are small and dense, with dwarf plants and blooming late. From the above symptoms we can quickly diagnose what kind of malnutrition cyclamen suffer from