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温度、pH、有机质及不同价态阳离子对铅吸持-解吸量有明显的影响.土壤中的铅在低浓度范围内(红茶园土为100μg/g,石灰性菜园土为500μg/g)对小白菜生长有刺激作用,超过一定浓度(红菜园土为≥500μg/g,石灰性莱园土为≥100μg/g)则有抑制作用.小白莱的含铅量随土壤铅浓度的增加而增加,两者呈极显著正相关.三种改良剂对铅污染土壤有明显的改良效果,其中以猪粪、石灰两种改良剂的效果为好,钙镁磷肥次之.
Temperature, pH, organic matter and different valence cations have obvious influence on the amount of desorption-desorption of lead. Lead in soils had a stimulating effect on the growth of Pakchoi at a low concentration range (100 μg / g in red soil and 500 μg / g in calcareous soil) Laoyuan soil ≥ 100μg / g) is inhibited. The lead content of Cabernet Sauvignon increased with the increase of lead concentration in soil, and the two showed a very significant positive correlation. The three improvers have obvious improvement effect on lead-polluted soil, of which pig manure and lime are two good modifiers and calcium-magnesium-phosphate is second.