广西主要类型土壤腐植酸的环境化学特征

Environmentally Chemical Features of Humic Acid in Main Types of Soils in Guangxi Zhuang Autonomous Region

通过野外布点采样及室内分析测试,对广西主要土壤类型的腐植酸的环境化学特征进行了系统研究。结果表明,广西主要类型土壤中腐植酸的分布量差异明显。在pH值略高,降雨量相对较少,气温比较低的环境条件下,土壤腐植酸可相对稳定存在。建议在红壤类土中施加石灰或直接施用偏碱性物质以稳定土壤中的腐植酸;增施微量元素肥料,以补充因腐植酸大量流失而导致土壤中微量元素已失去的平衡。广西泥炭资源丰富,就地取材利用泥炭腐植酸,将是保护广西的土壤资源、实现可持续发展的有效措施。

It has been found that distribution of humic acid was much different from each other in main types of soils in Guangxi Zhuang Autonomous Region from the present study. The humic acid in the soils studied occurred steadily when its pH value was a slightly higher, its rain was less, and its temperature was a little lower than the others. It was useful to keep the humic acid by applying lime or similar material in red soils. We discovered that several micro- elements were in deficiency as humic acid disappeared from the red soils in Guangxi zhuang Autonomous Region. It may be suggested that some kinds of micro-elements fertilizers be used in order to keep the red soils having enough trace elements. To preserver the soil resources and to realize sustainable development, a variety of turfs should be planted in Guangxi Province.