缺氧:植株生长缓慢、矮小黄绿,叶片窄短呈黄绿,老叶干枯。缺磷:植株矮暗绿,不分枝,次生根少,叶片暗绿无光泽,花少果少。缺钾:老叶黄或有斑点,叶缘或叶脉间有死斑,严重时叶干枯,植株细弱。缺钼:植株矮小,生长不良,叶脉间失绿,叶片边缘坏死,叶子卷曲。缺锌:植株矮小,新叶失绿变黄,上部叶片变小、老叶出现褐色小斑点,死斑大而普遍。缺硼:根系发育不良,叶片变形而小,翻卷、坏死,幼叶基部淡绿,枝条弯曲,花色淡而少,花期推迟,结实率低。缺锰:幼叶形成失绿条纹或斑点,叶片突起,边缘起皱,但仍为绿色,严重时形成褐色斑点,有 Hypoxia: Plant growth is slow, short yellow-green, yellowish green leaves narrow, dry old leaves. Phosphorus deficiency: plants dwarf dark green, unbranched, secondary roots less dark green leaves dull, less flowers less fruit. Potassium deficiency: the old yellow leaves or spots, leaf margins or dead spots between the veins, severe dry leaves, thin plants. Molybdenum deficiency: short plants, poor growth, chlorosis between the veins, leaf edge necrosis, leaf curl. Zinc deficiency: plant dwarf, green leaves turn green yellow, the upper leaves smaller, the old leaves appear brown spots, dead spots large and common. Boron deficiency: root system dysplasia, leaf deformation and small, curled, necrosis, young leaves at the base of light green, branches curved, pale and few flowers, delayed flowering, seed setting rate is low. Manganese deficiency: young leaves form green stripes or spots, leaves protruding, edge wrinkling, but still green, the formation of brown spots in severe cases, there