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研究简报

摘要：通过温室栽培萝卜、青菜和莴苣,研究土壤中的铅对蔬菜生长的影响及其在器官中的残留。在低浓度下,铅对蔬菜生长有不同程度的刺激作用。土壤有效态铅浓度与蔬菜各器官含铅浓度存在显著性正相关(P<0.05)。不同蔬菜对铅的敏感性、耐受力不同。

Abstract：The influence of soil lead on the growth of radish, Chinese cabbage and lettuce was studied. The growth of the vegetable was stimulated by soil lead at low concentration and the critical levels at which the vegetable yield was reduced 10 percent were 400-500mg/kg for radish and Chinese cabbage and 200mg/kg for lettuce as 0.5M BaCl2 extracted lead. The results also showed that the soil lead content was significantly correlated to the plant uptake of lead and the lead accumulation coefficients of edible tissues of radish, Chinese cabbage and lettuce were 0.681, 0.133 and 1 0.025 respectively.