缺出
缺出-
镁是参与叶绿素合成的重要元素，柑橘缺镁表现出叶片失绿、坏死等症状，在外界高光照强度下，植物叶片上的失绿、坏死症状更加明显。
Magnesium is an important element involved in chlorophyll synthesis , citrus magnesium deficiency show leaf chlorosis , necrosis and other symptoms , high light intensity in the outside world , the loss of green leaves , necrosis of more obvious symptoms .
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依据三七的缺素症状绘制出检索表。
According to the symptom the symptomatic list was made in this paper .