单磷酸钙对伊朗两种钙质土壤中镉化学组分浓度的影响

IF 1.4 Q4 SOIL SCIENCE

Soil Science Annual Pub Date : 2022-08-02 DOI:10.37501/soilsa/152586

Farzad Rassaei

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引用次数: 12

摘要

在伊朗法尔斯省的两种钙质土壤中，研究了磷(P)对镉(Cd)化学组分浓度的影响。由于这些相互作用，我们研究了磷对镉组分的影响。变量为3个水平的Cd(0.0、30.0和60.0 mg kg -1)。8H 2o)，三个水平的p(0.0、50.0和100.0 mg kg -1)来自Ca (h2po4) 2的土壤。h2o，三个层次的培养时间(2,4和8周)和两种土壤(粘土和砂质粘土壤土)。本研究采用随机完全区设计(RCBD)。经过2周、4周和8周的处理，进行顺序提取程序，以测定WsEx(水溶性和可交换性)、Sorb (EDTA萃取)、MnOx(锰氧化物)、Car(碳酸盐)、OM(有机物)、AFeOx(无定形铁氧化物)、CFeOx(结晶铁氧化物)和Res(残余)馏分中的镉浓度。结果表明，在WsEx、Sorb和MnOx馏分中，添加Cd的去除率为69.0% ~ 71.0%。粘土土壤中Sorb、OM和Res组分的镉含量较高，砂质粘土壤土中WsEx和Car组分的镉含量较高。添加磷作为磷酸单钙降低了WsEx和Sorb组分中镉的浓度，增加了Car、OM和Res组分中镉的浓度。磷的存在降低了那些容易释放到土壤溶液中的Cd的浓度(WsEx和Sorb)，它们将被植物吸收，从而减少了植物对镉的吸收。

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Effect of monocalcium phosphate on the concentration of cadmium chemical fractions in two calcareous soils in Iran

This study has been done to see the impact of phosphorus (P) on the concentration of cadmium (Cd) chemical fractions in two sorts of calcareous soils within the Fars province in Iran. Because of these interactions, we looked at the in ﬂ uence of phosphorus on cadmium fractions. Variables were three levels of Cd (0.0, 30.0 and 60.0 mg kg -1 of soil from CdSO 4. 8H 2 O), three levels of p (0.0, 50.0 and 100.0 mg kg -1 of soil from Ca (H 2 PO 4 ) 2. H 2 O, three levels Incubation time (2, 4 and 8 weeks) and two sorts of soil (clay and sandy clay loam). The randomized completed block design (RCBD) was used for this research. After 2, 4 and 8 weeks of treatments, the sequential extraction procedure was done to determine cadmium concentration in WsEx (Water Soluble and Exchangeable), Sorb (EDTA ex-tractable), MnOx (Manganese Oxides), Car (Carbonate), OM (Organic matter), AFeOx (Amorphous Iron Oxides), CFeOx (Crystaline Fe oxides) and Res (Residual) fractions. The results showed that 69.0 to 71.0% of the added Cd was removed within the WsEx, Sorb and MnOx fractions. Cadmium concentration in Sorb, OM and Res fraction was higher within clay soil while cadmium concentration within WsEx and Car fractions were higher within sandy clay loam soil. Adding P as monocalcium phosphate reduced cadmium concentration within WsEx and Sorb fractions while increased Car, OM and Res fractions. The presence of phosphorus reduces the concentration of Cd in those forms that are easily released into soil solution (WsEx and Sorb) from where they’ll be absorbed by plants and thus decrease cadmium uptake by plants.

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来源期刊

Soil Science Annual SOIL SCIENCE-

CiteScore

2.50

自引率

6.70%

发文量

审稿时长

29 weeks

期刊介绍： Soil Science Annual journal is a continuation of the “Roczniki Gleboznawcze” – the journal of the Polish Society of Soil Science first published in 1950. Soil Science Annual is a quarterly devoted to a broad spectrum of issues relating to the soil environment. From 2012, the journal is published in the open access system by the Sciendo (De Gruyter).