不同灌溉方法对保护地土壤钙素形态及其含量的影响  

Effect of Different Irrigation Methods on Soil Calcium Forms and Content in Protected Field

作　　者：张莹[1] 张玉龙[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110866

出　　处：《河南农业科学》2014年第10期42-46,共5页Journal of Henan Agricultural Sciences

基　　金：国家973计划项目(2011CB100502);沈阳市科技攻关项目(F11-117-3-00;1091108-3-02)

摘　　要：为探讨灌溉方式对保护地土壤钙素形态及其含量的影响，对连续13 a 分别进行沟灌、渗灌、滴灌3种灌溉处理的保护地0～80 cm 土层土壤钙素形态及其含量进行分析。结果表明，同一土层不同灌溉处理间土壤全钙、酸溶性钙、水溶性钙、交换性钙含量差异极显著；总体上，全钙含量表现为渗灌处理高于滴灌、沟灌处理，酸溶性钙含量表现为滴灌＞渗灌＞沟灌，交换性钙含量表现为渗灌、滴灌处理高于沟灌处理，水溶性钙含量表现为沟灌＞渗灌＞滴灌；各土层土壤 pH 值与酸溶性钙含量呈极显著正相关关系，与水溶性钙含量呈显著或极显著负相关关系；5～80 cm 土层土壤有机质含量与土壤全钙、酸溶性钙、交换性钙含量呈显著或极显著正相关关系。总之，渗灌方式较其他灌溉方式更利于土壤钙素供应。To investigate the effects of different irrigation methods on soil calcium forms and content in protected field,this study analyzed calcium forms and content in soil at the depth of 0-80 cm in protected fields with furrow irrigation,subsurface irrigation,drip irrigation for 13 years, respectively.The results showed that the contents of total calcium,acid soluble calcium,water soluble calcium,exchangeable calcium at the same soil depth were significantly different among different irrigation treatments.On the whole,the content of total calcium under subsurface irrigation was higher than that under drip irrigation and furrow irrigation,the content order of acid soluble calcium was drip irrigation〉subsurface irrigation〉furrow irrigation,the contents of exchangeable calcium under subsurface irrigation and drip irrigation were higher than that under furrow irrigation,the content order of water soluble calcium was furrow irrigation〉 subsurface irrigation〉drip irrigation.The pH value had very significant positive correlation with acid soluble calcium content,had significant negative correlation with water soluble calcium content in soil at the depth of 0-80 cm;the organic matter content had significant positive correlations with total calcium content,acid soluble calcium content and exchangeable calcium content in soil at the depth of 5-80 cm.Overall,subsurface irrigation was beneficial to the supply of calcium in soil.

关 键 词：保护地 土壤 灌溉 钙素 形态 含量 

分 类 号：S275[农业科学—农业水土工程]