土壤中营养成分少或植株吸收营养能力较低都可导致植株营养不良。过多的水分、低温以及植株根部受伤和病害的侵染等都有可能使植株、茎叶和果实发生营养不良。其症状表现：植株生长缓慢，叶片褪绿，甚至烫伤。果实发育不良，结果数减少，严重时果底腐烂或产生斑点。l、脐腐病此 Less nutrients in the soil or lower plant nutrient absorption capacity can lead to plant malnutrition. Excessive water, low temperature and plant root injury and disease infection may make plants, leaves and fruits malnutrition. The symptoms: slow plant growth, chlorotic leaves, and even scalded. Fruit poorly developed, the number of results decreased, severe decay or produce spots. l, umbilical rot disease this