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首页> 外文期刊>Communications in Soil Science and Plant Analysis >Accumulations of Cadmium, Zinc, and Copper by Rice Plants Grown on Soils Amended with Composted Pig Manure.
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Accumulations of Cadmium, Zinc, and Copper by Rice Plants Grown on Soils Amended with Composted Pig Manure.

机译：在堆肥猪粪改良的土壤上种植的水稻植物对镉，锌和铜的积累。

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摘要

A pot experiment, in which composted pig manure was applied to soils at rates of 0%, 0.5%, 1.5%, 3.0%, and 5.0% (W/W) to simulate additions of different amounts of cadmium (Cd), copper (Cu), and zinc (Zn) to soil, was conducted to assess accumulation of metals by rice (Oryza sativa L.) plants from soils treated with manure. Results indicated that Cd concentrations in rice grains were more than the limit of 0.2 mg kg-1 when 0.14 mg kg-1 or more Cd was loaded to Ferralsols by manure application, but it was not more than the limit in Calcaric Cambisols. Zinc contents in polished rice grains did not exceed the permissible limit of 50 mg kg-1 in two soils. Copper concentrations in rice grain were slightly more than the limit of 10 mg kg-1 in Ferralsols but not in Calcaric Cambisols. Results suggested greater risk of heavy-metal contamination from manure to paddy rice in Ferralsols than in Calcaric Cambisols.
机译：一项盆栽实验，其中以0％，0.5％，1.5％，3.0％和5.0％（W / W）的比例将猪粪堆肥应用于土壤，以模拟添加不同量的镉（Cd），铜（铜和锌（Zn）进入土壤，以评估水稻（Oryza sativa L.）植物从肥料处理过的土壤中积累的金属。结果表明，当通过施肥将0.14 mg kg-1或更多的Cd加载到Ferralsols中时，水稻籽粒中Cd的浓度超过了0.2 mg kg-1的限制，但不超过钙生的Cambisols中的限制。在两种土壤中，精制米粒中的锌含量均未超过50 mg kg-1的允许极限。水稻谷粒中的铜浓度略高于Ferralsols中10 mg kg-1的极限值，但钙钙质Cambisols中没有。结果表明，铁肥中的重金属污染风险比铁钙土中的肥料高。

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