5种滨海沙生植物氮磷钾化学计量特征分析  

Analysis on Stoichiometric Characteristics of N,P,K of Five Coastal Sandy Plants

作　　者：骆娟[1] 耿静[1] 王宏信[1] LUO Juan;GENG Jing;WANG Hong-xin(Academician Workstation of ZHAI Mingguo,University of Sanya,Sanya Hainan 572000)

机构地区：[1]三亚学院翟明国院士工作站,海南三亚572000

出　　处：《现代农业科技》2020年第10期144-145,150,共3页Modern Agricultural Science and Technology

基　　金：海南省自然科学基金资助项目(318QN253)。

摘　　要：本研究区位于海南岛西线的东方市月亮湾景区,选择了5种典型的沙生地被植物沙参、单叶蔓荆、红茅草、鬼针草和马鞍藤等,分别比较其植株地上、地下部分的氮、磷、钾含量。结果表明,马鞍藤的地上部分氮含量最高,为8.10 g/kg;沙参地上部分磷含量为1.14 g/kg,显著高于其他植物品种;而沙参、苇草和单叶蔓荆的地下部分钾含量高于地上部分;单叶蔓荆的地下部分N/P和K/P比值最高,显著高于其他植物;5种植物地上部分的氮、磷含量均高于地下部分。The research area lined in the bay of Yueliang,situated in the west margin of Hainan.Five kinds of psammophytes were sampled to compare the N,P,K contents in below-ground and above-ground respectively,including Adenophora stricta Miq.,Vitex trifolia L. var. simplicifolia Cham.,Murdannia nudiflora(L.)Brenan,Bidens pilosa L. and Ipomoea pescaprae(Linn.)Sweet.The results showed that the N content which was 8.10 g/kg in above-ground of Ipomoea pescaprae(Linn.) Sweet was the highest;the P content in above-ground of Adenophora stricta Miq. was 1.14 g/kg,which was obvious higher than that of other plants;the K content of Adenophora stricta Miq.,Vitex trifolia L.var. simplicifolia Cham and Vitex trifolia L.var. simplicifolia Cham was higher in below-ground than in above-ground;the N/P and K/P were higher in below-ground of Vitex trifolia L. var.simplicifolia Cham.,which was obvious higher than other plants;the N and P contents of 5 species of psammophytes were higher in above-ground than below-ground.

关 键 词：沙生植物 营养元素 元素累积 海南海岸 

分 类 号：Q948.1[生物学—植物学]