有机物料改良滨海盐土的根际交换性阳离子效应  

Rhizosphere Effects of Organic Material on Soil Exchangeable Cation in Coastal Saline Soil

作　　者：吴龙华[1] 张素君[1] 叶静[1] 朱玺[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,浙江省农业科学院,沈阳农业大学土化系

出　　处：《沈阳农业大学学报》1996年第3期230-234,共5页Journal of Shenyang Agricultural University

摘　　要：采用根袋法研究腐熟有机物料对滨海盐土水稻根际交换性离子组成的影响及其与植株元素吸收的关系，结果表明，施用有机物料使土壤交换性Ｃａ，Ｋ含量显著或极显著上升；交换性Ｍｇ显著递减；Ｎａ则有所增加，但差异不显著；土壤ＣＥＣ和ＥＳＰ也略有上升，但差异也未达５％显著性水平；水稻植株含Ｋ显著上升，Ｎａ则显著下降，Ｃａ，Ｍｇ含量略增但变化没有一价元素显著；土壤交换性Ｋ，Ｃａ的上升显著减少了植株的Ｎａ含量，体现了有机物料改良滨海盐土的良好效应。Rhizobox method was used to study the effect of decomposed organic material on soil exchangeable cations and their relationships with elements uptaking of rice. Results showed that application of organic manure could significantly enhance soil exchangeable Ca, K; but decreased Mg content. Na increased but not signicant. Soil CEC and ESP increased slightly,there is no obvious relationship between soil CEC, ESP and organic manure.K in plant increased remarkablely but Na decreased. Ca,Mg contents also increased in rice but less than K did.The increase of soil exchangeable K,Ca caused the derease of Na in rice plant which showed the good effectiveness of organic material on coastal saline soli reclemation.

关 键 词：盐土 有机物料 交换性阳离子 滨海盐土 水稻 

分 类 号：S156.42[农业科学—土壤学] S153.3[农业科学—农业基础科学]