期刊论文

On relation between trace elements and Cd content in soil-rice system at different rice stages under organic fertilizer application

中文

安全与环境学报

1009-6094

2020

20

05

1932-1941

10.13637/j.issn.1009-6094.2019.1261

贵州大学***项目（贵大人基合字[2018]26号）;贵州大学培育项目（黔科合平台人才[2018]5781号）； 国家重点研发计划项目（2016YFD0800705）； 国家自然科学基金联合基金项目（U1612442）； 贵州省生态学一流学科建设项目（GNYL[2017]007）； 贵州省人才基地项目（RCJD2018-21）；

本校为其他机构

为了研究Cd污染稻田中施加有机肥在土壤分解释放的微量元素与Cd的相互关系,通过水稻田间试验,测定施用有机肥(0、7.5 g/kg、15 g/kg、30 g/kg)后水稻3个生育期(分蘖盛期、灌浆期、成熟期)土壤微量元素、Cd的酸可提取态质量比及成熟期水稻各部位(根系、茎、叶、谷壳、糙米)中Ca、Fe、K、Mg、Mn、P、Zn元素质量比,并分析它们在水稻不同生育期土壤-水稻系统中的变化规律和相关关系。结果表明:有机肥的施用显著降低了3个水稻生育期土壤酸可提取态Cd质量比,不同程度增加了土壤酸可提取态Ca、K、Mg、P质量比。除Fe质量比有明显上升的趋势外,随水稻生育期延长,土壤Cd和其他微量元素酸可提取态质量比均无...

In this paper,we have made a detailed analysis of the relation between Cd and the related trace elements in the soilrice system at different rice growing stages so as to trace and register the changes of the acid extractable rates of Cd and the trace elements known as Ca,Fe,K,Mg,Mn,P,Zn in soil. The investigation and analysis has been done by analyzing the trace elements concentrations,the Cd concentration rates in the soil at three rice growing stages (i. e. the tillering stage,the filling stage,and the maturity stage) under the organic fertilizer application (0,7.5 g/kg,15 g/kg,30 g/kg) and ...