In water mold, element was obviously richer where closer to the earth surface, due to the latent culture effect of water mold.
在水耕土中，近地表的潜充育土元素明显富集，其原因与水耕土的潜育化作用有关。
Suggestion: in order to avoid the negative effect the bad latent stimulation, it is necessity to guide healthy main current culture;
建议：要避免隐性劣性刺激对大学生心理健康的负面作用，需要引导健康主流文化；
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