摘要
利用长期定位试验,研究了有机肥和氮、磷、钾肥不同配施方式对保护地土壤钙素形态分布的影响。研究结果表明:有机肥的施入增加了保护地土壤全钙含量。随着施氮肥数量的增加,土壤水溶性钙含量增加,土壤全钙、吸附性钙和酸溶性钙含量均呈现下降趋势。施钾肥对土壤中钙素形态分布的影响较小。含钙磷肥的施入增加了土壤全钙的含量,但对其它形态钙素分布的影响规律性不明显。土壤pH值与全钙和吸附性钙含量之间呈显著正相关关系,与水溶性钙呈显著的负相关关系。土壤有机质与全钙和非酸溶性钙之间呈显著正相关关系,与水溶性钙呈极显著负相关关系。
This study was conducted to investigate the effects of long-term located fertilization on forms distribution of soil calcium in protected field.The results of the study indicated that： Applying organic fertilizer could increase the supply of soil calcium.Apply nitrogen fertilizer affected total calcium content and formation distribution in soil.Adding nitrogen fertilizer application could increase the content of water soluble calcium and decrease the content of total calcium,adsorption calcium and the acid soluble calcium.The effects of applying potassium fertilizer or with others were little.Applying phosphate fertilizer including calcium could increase calcium content.But the effect of phosphate fertilizer on other forms of soil calcium was not obvious.The content of total calcium and adsorption calcium had significant positive correlations with pH value.Organic reach significant positive correlation with total calcium content and the acid soluble calcium content.The content of total calcium and non-acid soluble calcium had a significant positive correlation with.The content of soluble calcium had a significant negative correlation with pH value and organic matter content.
出处
《水土保持学报》
CSCD
北大核心
2011年第2期198-202,共5页
Journal of Soil and Water Conservation
基金
国家科技支撑计划项目(2006BAD07B04)
关键词
长期定位施肥
保护地
钙素
形态分布
long-term located fertilization
protected field
calcium
form distribution
