黄河三角洲贝壳堤岛典型建群植物养分吸收积累特征  

Nutrients Absorption and Cumulation in Typical Edificatos of Seashell Islands in Yellow River Delta

作　　者：刘庆[1] 孙景宽[1] 田家怡[1] 张敏[1] 

机构地区：[1]滨州学院山东省黄河三角洲生态环境重点实验室,山东滨州256603

出　　处：《水土保持研究》2010年第3期153-156,161,共5页Research of Soil and Water Conservation

基　　金：山东省自然科学基金项目(Y2006D01);山东省自然科学基金联合专项(ZR2009BL003);滨州学院博士研究生奖励基金项目(2007Y07)

摘　　要：对黄河三角洲贝壳堤岛8种主要建群植物氮磷钾养分的吸收与累积特征进行研究。结果表明:黄河三角洲贝壳堤岛8种植物氮元素累积大小的顺序为:沙打旺>砂引草>杠柳>柽柳>狗尾草>二色补血草>蒙古蒿>芦苇;磷元素累积大小的顺序为:杠柳>狗尾草>砂引草>蒙古蒿>沙打旺>柽柳>芦苇>二色补血草;钾元素累积大小的顺序为:砂引草>狗尾草>杠柳>沙打旺>蒙古蒿>二色补血草>芦苇>柽柳。植物不同部位对营养元素积累存在一定的差异,其基本规律以叶部最大,根部次之,茎部最小。根、茎、叶三个部位均以氮的积累量最大,钾元素次之,磷元素积累量最小。从叶部与整个植株的N/P和N/K比值比较来看,叶部的N/P与N/K比值均大于整个植株中两种元素的比值。养分在植物叶部的积累情况更能反映植物对养分的需求状况。The study was performed on the nutrients absorption and cumulation in eight types of edificatos of Seashell Islands in the Yellow River Delta. The results showed that the cumulation sequence of nitrogen in eight types of edificatos is Astragalus adsurgens〉Messerschmidia sibirica〉Periploca sepium〉Tamarix chinensis〉Setaria viridis〉Limonium bicolor Artemisia mongolica〉Phragmites communis,the sequence of phosphorus in eight types of edificatos is Periploca sepium〉Setaria viridis〉Limonium bicolor〉Messerschmidia sibirica〉Artemisia mongolica〉Astragalus adsurgens〉Tamarix chinensis〉Phragmites communis〉Limonium bicolor and the sequence of potass in eight types of edificatos is Messerschmidia sibirica〉Setaria viridis〉Periploca sepium〉Astragalus adsurgens〉Artemisia mongolica〉Limonium bicolor〉Phragmites communis Tamarix chinensis. There is difference of nutrition cumulation in different parts of eight plants and the basic rule of it is leafrootstem. The element whose nutrition cumulation is the largest one in the three parts is nitrogen and the smallest one is phosphorus. From contrasting the N/P and N/P ratios in leafs and in whole plants,we know that the ratios in leaf is bigger and which in whole plant is smaller,so we can draw a conclusion that the nutrient accumulation in leaf can better reflect the plant＇s nutrient requirement than the whole plant.

关 键 词：植物营养 吸收与累积 贝壳堤岛 黄河三角洲 

分 类 号：S154.4[农业科学—土壤学]