摘要
通过盆栽水稻实验的方法研究在水稻分蘖期和成熟期,添加有机物料(猪粪和泥炭)和外源铜镉的条件下,淹水土壤的土壤溶液的性质及各种元素的变化情况。实验结果显示,不同的土壤类型间存在很大的差异性。 猪粪显著降低了土壤溶液Eh,同时提高了pH值,这种作用在红壤上表现的更为突出。在比较猪粪和泥炭的作用时,实验显示,前者可明显提高土壤溶液的K浓度,降低Fe和Zn浓度。外源铜镉可以通过影响土壤生态系统来改变土壤溶液的性质,铜的作用要高于镉,且在红壤上的作用更为明显,这些作用表现在提高溶液Si、K浓度和pH值,降低Fe浓度。
The effect of organic materials,hog manure and peat,with added copper and cadmium on soil solution of two soils,a red soil and a fluvo-soil,were studied under the condition of rice cultivation. The result shows that there lies sensitive difference among different soil kinds. Hog manure reduced Eh and raised pH of soil solution evidently,while these affect more greatly on red soil than on fluvo-aquic soil. When comparing the hog manure treating with the peat treating,there were higher K,lower Fe and Zn concentration in the soil solution of the former. Added Cu and Cd change the properties of soil solution by affecting the soil ecosystem. Added Cu raised pH of soil solution,while these affect more greatly on red soil than on fluvo-aquic soil. In the experiment,added Cu increased the concentration of Si and K,and reduced that of Fe in soil solution.
出处
《武汉科技学院学报》
2003年第2期64-67,共4页
Journal of Wuhan Institute of Science and Technology
基金
国家自然科学基金资助项目(项目编号:49671048).
