油棕不同叶序五种营养元素含量的测定及变化规律研究  

Study of the nutritional diagnosis of five nutritive elements in different oil palm leaf arrangement

作　　者：李艳[1] 马子龙[1] 王必尊[1] 李杰[1] 刘立云[1] 

机构地区：[1]中国热带农业科学院椰子研究所,海南文昌571339

出　　处：《中国油料作物学报》2008年第4期464-468,共5页Chinese Journal of Oil Crop Sciences

基　　金：国家科技基础条件平台重点项目(2005DKA21005-66)

摘　　要：首次根据油棕叶片树冠轮生的规律，对不同成熟度的叶片进行排序，进而对不同叶序的N、P、K、Ca、Na五种营养元素含量进行了测定，并对其变化规律作了分析与研究，结果表明：（1）不同油棕树体五种营养元素含量有所差异；（2）从整体看，第8至26叶，Ca含量上升，Na含量略微上升，而K含量则下降，N和P则没有一定的规律性；（3）成龄树K含量变化范围为0．41％-1．08％；Ca含量变化范围为0．47％～1．03％；Na含量变化范围为0．011％-0．052％；N含量变化范围为1．83％-2．30％；P含量变化范围为0．12％～0．19％。（4）本试验中第20～22叶营养元素含量变化幅度小，比较稳定，可为我国油棕营养诊断取样提供较为科学的参考，与马来西亚第17叶采样标准有所差异。This study measured five nutritive elements N, P, K, Ca and Na in different leaf arrangements of oil palm introduced from Africa, and analyzed microelement content. The results showed that the five nutritive elements content was different in different oil palm trees. On the whole, Ca content increased while the content of K declined from NO. 8 leaf to NO. 26 leaf. Na content increased while N and P content was random. The range of K was from 0.41% to 1.08%, and the Ca was from 0.47% to 1.03% ,the Na was from 0.011% to 0.052%, N was from 1. 83% to 2.30% and P was from 0.12% to 0.19%. The variation of nutritive element content from NO. 20 to NO. 22 leaf was not significant, which can provide standard reference to selecting leaves for nutritive diagnosis. The Sampling standard applied was different from NO. 17 leaf of Malaysia.

关 键 词：油棕 营养元素 叶序 变化规律 

分 类 号：S565.901[农业科学—作物学]