Toxicity, reactions and existence state in soil and effects on crops of chromium, current situation of applying fertilizer of tannery chromium sludge were described.
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。
Under different soil conditions, there were significant genotypic differences in effects of applying nitrogen fertilizer on nitrogen use efficiency, yield and characters of nitrogen uptake.
在不同土壤条件下，水稻施用氮肥的增产效应、氮肥利用效率和对氮素的积累与分配均存在显著的基因型差异。
The soil became acid obviously, the exchangeable al in soil increased significantly, crop grew poorly and the yield decreased after applying sole chemical fertilizer for long term.
红壤长期施用单一化学肥料，土壤明显酸化，土壤交换性氢铝显著增加，作物生长变差，产量降低。
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