ABSTRACT In this work the effect of the addition of different amounts of cattle slurry (CS) to a Cd contaminated soil, was studied regarding its effect in spinach plants. Two levels of Cd contamination (2 and 10 mg/kg) and three levels of CS addition were evaluated (2.5, 5 and 10 g CS/100 g soil). Spinach was shown to be a tolerant species, able to accumulate relatively high amounts of Cd (up to 367.7 mg/kg in the leaves), exceeding the limits established by European regulations for leaf vegetables. The addition of 2.5 and 5 g CS/100 g to soil containing 2 mg/kg Cd did not reduce the uptake of this metal but allowed the plants to grow as much as the control. The addition of 10 g CS/100 g lead to a reduced Cd uptake but also to a lower plant growth compared to the lower CS levels. The combined effects of Cd and CS changed element content in the plant, but without causing severe toxicity or deficiency effects.

中文翻译：

---

牛粪对镉污染土壤菠菜生长的影响

摘要 在这项工作中，研究了向受 Cd 污染的土壤中添加不同数量的牛浆 (CS) 对菠菜植物的影响。评估了两种水平的 Cd 污染（2 和 10 毫克/千克）和三种水平的 CS 添加量（2.5、5 和 10 克 CS/100 克土壤）。菠菜被证明是一种耐受性物种，能够积累相对大量的 Cd（叶子中高达 367.7 mg/kg），超过了欧洲对叶菜类蔬菜规定的限制。向含有 2 mg/kg Cd 的土壤中添加 2.5 和 5 g CS/100 g 不会减少这种金属的吸收，但允许植物与对照一样生长。与较低的 CS 水平相比，添加 10 g CS/100 g 导致 Cd 吸收减少，但也导致植物生长降低。