title: ITS_LCN2a
design: ITS-seq, In the LCN group, urea (CO(NH)) was applied. Salix matsudana was planted in heavy - metal - contaminated soil, and CO(NH) was applied at a concentration of 60 kghmyear to observe the influence of low - level urea on the phytoremediation of heavy - metal - contaminated soil. The maintenance conditions were the same as those of other groups.