缺乏（ ）元素时，缺素症首先在植物的幼叶表现出来。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id < 2171211 and id<>'2171211' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25860' and id > 2171211 and id<>'2171211' order by id asc limit 5