腐植酸在广西红壤类土中的环境化学特征

Environmental Chemical Features of Humic Acid in Red Soils in Guangxi Zhuang Autonomous Region

通过野外布点采样及室内分析测试,对广西红壤类土腐植酸的环境化学特征进行了系统研究。结果表明,广西红壤类土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者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 red soils in Guangxi Zhuang Autonomous Region from present studies. The humic acid in the soils studied existed steadily when the pH value was slightly higher, with less rain and lower temperature. It was useful to keep the humic acid by applying lime or similar material in red soils. It was 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 enough trace elements in red soils. To preserve the soil resources and to realize sustainable development, a variety of turfs should be planted in Guangxi Zhuang Autonomous Region.