【摘要】 [目的]研究污染水稻土中砷及其与土壤基本理化性质的关系。[方法]在泉州和漳州污灌地区取水稻样品,同时采集对应的土壤耕层样品,研究污染水稻土中砷的形态及其与土壤基本理化性质的关系。[结果]土壤全砷含量与土壤游离氧化铁含量呈极显著线性正相关(R2=0.3777**,n=39),与土壤有机质、粘粒含量、CEC等理化性质的相关性不明显。而漳州采样区土壤全砷含量与土壤有效磷含量呈极显著线性正相关(R2=0.308 1**,n=19)。土壤全砷与土壤有效砷呈极显著性线性正相关(R2=0.544 0**,n=39)。土壤有效砷与土壤CEC呈极显著线性正相关(R2=0.5440**,n=39),与土壤游离氧化铁也呈极显著线性正相关(R2=0.7546**,n=39)。[结论]该研究为田间水稻生产砷污染的控制提供了指导。更多还原

【Abstract】 [Objective] The purpose was to study arsenic in polluted paddy soil and its relation to the fundamentally physicochemical properties of soil.[Method] The rice samples were selected from sewage-irrigated areas in Quanzhou and Zhangzhou cities and the corresponding soil samples were selected from cultivated layer.The form of arsenic in polluted paddy soil and its relation to the fundamentally physicochemical properties of soil were studied.[Result] In soil,the content of total arsenic showed extremely significantly linear and positive correlation with the content of free ferric oxide(R2=0.377 7**,n=39) and didn’t show significant correlation with the physicochemical properties such as organic matter,clay particle content and CEC.In the soil selected from sampling area in Zhangzhou city,the content of total arsenic showed extremely significantly linear and positive correlation with the content of available phosphorous(R2=0.308 1**,n=19).In soil,the total arsenic showed extremely significantly linear and positive correlation with available arsenic(R2=0.544 0**,n=39);the available arsenic showed extremely significantly linear and positive correlation with CEC(R2=0.544 0**,n=39) and free ferric oxide(R2=0.754 6**,n=39).[Conclusion] The study provided directions for controlling arsenic pollution in rice production in field.更多还原