吉林省西部不同利用方式苏打盐碱土的缓冲性能研究

Study on Soil Buffering Abilities of Different Utilization Types in Saline Alkali Zone

苏打盐碱土是吉林省西部地区主要低产土壤之一,依据其性质合理地进行开发与改良,是增加土地利用面积、提高粮产的重要途径。该试验在分析供试土壤酸缓冲性能的强弱的基础上,借助SPSS统计软件对土壤有机质含量、粘粒含量、碳酸钙含量、CEC、ESP与土壤缓冲容量的相关性分析,确定影响吉林省西部地区土壤酸缓冲性能的主导因素。结果表明:不同利用方式苏打盐碱土壤对酸的缓冲性强弱顺序是:新水田>老水田>旱田>林地>盐化草甸土。通过对各因素与土壤缓冲容量的相关性分析得知,ESP与碳酸钙含量对土壤的酸缓冲性能起主导作用。盐化草甸土壤养分含量较高且缓冲性弱,易于调制酸度,应考虑优先改良利用。

Saline Alkali Soil was one of low-productive soil in west part of Jilin province. Improving characters of Saline Alkali Soil is an important way to improve grain yield. Based on correlation analysis between pH buffer capacities and other characters, the results showed that soil buffering abilities are as follows： late clearage paddy soillong-time clearage paddy soildry-farming landwoodland soilmeadow saline soil. Among different effectors, the content of CaCO3 and ESP played important roles. Salinizaed meadow soil had high contents of nutrient and low soil buffering ability, which could be developed and improvement on priority.