施用菜籽饼肥对次生盐渍化温室土壤有效养分、盐分及盐分组成的影响  

Effects of Oil Cake Manure Application on Soil Nutrients,Salts and Salt Composition in Greenhouse Soil Affected by Secondary Salinization

作　　者：郇恒福[1] 周健民[1] 段增强[1] 王火焰[1] 高砚芳[1] 

机构地区：[1]土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

出　　处：《土壤》2008年第4期586-590,共5页Soils

基　　金：国家自然科学基金重点项目(30230250);中国科学院知识创新工程项目(KZCX3-SW-439)资助

摘　　要：通过田间试验研究了施用油菜菜籽饼肥处理后，次生盐渍化温室土壤中的有效养分、水溶性盐分含量及盐分离子组成的变化，以评价施用饼肥改良次生盐渍化温室土壤的可行性以及在温室土壤上大量施用油菜籽饼肥可能出现的后果。结果表明：在次生盐渍化温室土壤上施用饼肥会显著增加0～20cm土壤中的绝大多数有效养分特别是大量元素有效养分的含量和全盐含量。同时，施用饼肥也使得20～30cm土壤中的部分养分和盐分离子含量显著增加，土壤次生盐渍化程度进一步加重。因此，施用饼肥并不能作为一种改良次生盐渍化温室土壤的有效措施，为避免土壤次生盐渍化程度的形成和发展，应减少设施农业中饼肥的施用量.A field trial was conducted in a greenhouse with soil affected by secondary salinization to explore effects of application of oil cake manure on soil available nutrients, water soluble salts and salt composition, and hence to evaluate feasibility of applying oil cake manure to ameliorate soils affected by secondary salinization, and predict possible consequences of the application of a large amount of oil cake manure in the greenhouse soil. Results indicated that most of the soil available nutrients, especially the macro nutrients, water soluble salt content and EC in the 0-20 cm soil layer, were significantly increased, and so were some soil available nutrients and salt ions in the 20-30 cm soil layer, thus further aggravating the risk of soil secondary salinization. Therefore, oil cake application was not a good measure to ameliorate salinized soil. In the greenhouse, its application rate should be rationally decreased to avoid the formation and development of soil secondary salinization.

关 键 词：饼肥 次生盐渍化 温室土壤 有效养分 盐分含量及组成 

分 类 号：S153.6[农业科学—土壤学]