在拳王童年家乡附近，当地卫生部门已清理了有毒性的土壤，建造了社区花园。
Near the boxer's childhood home, the local sanitation department has cleaned the soil of toxins for the creation of a community garden.
简述了铬的毒性、铬在土壤中的反应与存在状态、铬对植物的影响及含铬污泥在农业中应用的现状。
Toxicity, reactions and existence state in soil and effects on crops of chromium, current situation of applying fertilizer of tannery chromium sludge were described.
以盆栽试验，研究了砷对莴苣的影响、土壤砷的有效性及其毒性临界浓度。
A greenhouse study was conducted to investigate the effect of soil as on lettuce growth, its plant availability and toxic critical concentration.
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