干旱区生态环境知识资源中心(Arid): 广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究

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	广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究
其他题名	Relationship among Bioavailability Cadmium and Cadmium Enrichment Coefficient in Rice and Paddy Soil Properties in Guangxi
	李慧敏 1; 方圆 2; 唐翠荣 2; 顾明华 2; 雷静 2; 窦飞 2; 谭力 2; 陈宏 2; 王丽萍 3
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2018
卷号	31 期号:12 页码:2678-2684
中文摘要	【目的】开展广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究,为降低石灰岩地区土壤镉迁移及稻米镉累积提供理论参考依据。【方法】以广西不同地方的65个水稻土及相应的Y两优品种系列水稻为研究对象,分析土壤理化性质、水稻各部位镉含量、土壤有效镉/总镉、水稻各部位对镉的富集系数与土壤性质的关系,以及影响土壤镉有效性和糙米镉富集的主要影响因子。【结果】土壤镉超标率为67.69 %,糙米超标率为41.54 %。土壤镉有效性受到铁、锰形态的影响,有效镉/总镉与总铁、总锰呈显著负相关,与有效铁呈显著正相关;土壤pH、有机质、交换性钙、总铁和总锰显著影响水稻对镉的富集能力,其中,糙米镉富集系数与pH值、交换性钙含量呈极显著负相关,与有机质、总铁、总锰呈显著负相关。总锰和有效锰是决定土骧镉有效性的主要影响因子,镉有效性的线性回归方程为:有效镉/总镉=0.491 -0.167总锰+0.004有效锰;交换性钙和总锰是决定糙米镉富集能力的主要影响因子,糙米镉富集系数线性回归方程为:糙米镉富集系数=0.493 -0.006交换性钙-0.156总锰。【结论】广西稻米超标率低于稻田土壤镉超标率。在所研究的土壤性质中,锰形态是影响土壤镉有效性的主要因子,总锰、交换性钙含量是影响稻米富集镉的主要因子。
英文摘要	【Objective】To provide a reference for reducing the cadmium accumulation of rice in limestone areas,the correlation coefficient between the soil bioavailable cadmium and cadmium enrichment coefficient of each part of the rice and soil properties in Guangxi Province was investigated.【Method】65 pairs of soil and rice cultivar(Y-Liangyou) were collected from paddy fields in Guangxi Province to investigate the relationship among ratios of paddy soil bioavailable/total cadmium and brown rice cadmium concentrations and paddy soil properties factors,and the main factors which influence bioavailable cadmium and cadmium concentrations in brown rice.【Result】The cadmium excess rate of soil was 67.69 % and the brown rice excess rate was 41.54 %.Soil cadmium effectiveness under the influence of Fe,Mn forms.Both bioavailable cadmium and total cadmium concentrations in paddy soil were significantly negatively correlated with soil total iron,manganese concentrations,while positively correlated with bioavailable iron concentrations.pH,organic matter,exchangeable calcium and total iron and total manganese could significant effect the cadmium enrichment capability of rice.Cadmium enrichment coefficient of brown rice was significantly negatively correlated with pH,exchangeable calcium and was extremely significantly negative correlation with organic matter,iron,manganese.In addition,total manganese and bioavailable manganese concentrations were the main impact factors affected soil bioavailable cadmium.It is made that the correlation ratio analysis of bioavailable cadmium/total cadmium,total manganese and bioavailable manganese concentrations by use of univariate linear regression equation:Ratio (bioavailable cadmium/total cadmium) =0.491 -0.167C(total manganese) + 0.004C(bioavailable manganese).Brown rice cadmium intake was influenced by total manganese concentrations,the correlation analysis of enrichment coefficient of brown rice arid exchangeable calcium and total manganese concentrations:Ratio(enrichment coefficient of brown rice) =0.493 -0.006C(exchangeable calcium) -0.156C(total manganese).【Conclusion】The over-limit rate of brown rice was lower than soil in Guangxi Province.The manganese speciation was the most critical factors that affected the effectiveness of soil cadmium,while the total manganese and exchange calcium content of soil were mostly the main factors that reduced the Cd concentration in rice in Guangxi Province.
中文关键词	镉 ; 土壤性质 ; 富集系数 ; 相关性 ; 影响因子
英文关键词	Cadmium Soil properties Enrichment coefficient Correlation Impact factor
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6408171
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238519
作者单位	1.广西大学农学院;;广西壮族自治区亚热带作物研究所, ;;, 南宁;;南宁, 广西;;广西 530005;;530001, 中国; 2.广西大学农学院, 南宁, 广西 530005, 中国; 3.广西壮族自治区亚热带作物研究所, 南宁, 广西 530001, 中国
推荐引用方式 GB/T 7714	李慧敏,方圆,唐翠荣,等. 广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究[J],2018,31(12):2678-2684.
APA	李慧敏.,方圆.,唐翠荣.,顾明华.,雷静.,...&王丽萍.(2018).广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究.西南农业学报,31(12),2678-2684.
MLA	李慧敏,et al."广西水稻土镉有效性、水稻镉富集系数与土壤性质的关系研究".西南农业学报 31.12(2018):2678-2684.