水仙生长期氮、磷、钾含量的动态变化  

TREND CHANGES OF NITROGEN,PHOSPHOROUS AND POTASSIUM IN THE GROWING PERIOD OF NARCISSUS

作　　者：龙岳林[1] 王奎武[2] 许春英 黄松德 

机构地区：[1]湖南农业大学植物科学技术学院,长沙410128 [2]湖南农业大学科研推广处,长沙410128 [3]长沙市南郊公园,长沙410009

出　　处：《湖南农业大学学报（自然科学版）》1997年第3期234-237,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南农业大学青年科研基金

摘　　要：在较高营养水平的栽培条件下 ,研究了三年生水仙各营养器官在生长期中氮、磷、钾含量的动态变化 .结果表明 :水仙的不同营养器官氮、磷、钾的变化速率和总量的差异极为明显 .植株体内氮的递增速率在生长中、后期较快 ,而在生长前、末期较慢 ;磷的递增速率在生长后期最快 ;钾的递增速率在整个生长期中变化较小 .每株水仙在整个生长期中氮、磷、钾的净增量分别为36 6 .17,19.80 ,4 4 5.12 mg.Nitrogen,Phosphorous and Potassium content is determined and their trend changes have been studied (in nutritive organs of triennial narcissus) under a sufficient nutrient condition.The deta obtained show that the change rates and total content of N,P and K differ greatly in different nutritive organs of narcissus.The net increase rate of N is faster during metaphase and anaphase than that during prophase and telophase in the growth of narcissus;the net increase rate of P tops the highest level during anaphase;and that of K varies slightly in the whole growth.The net increases of N,P and K in narcissus plant are 366.17,19.80,445.12 mg respectively.

关 键 词：生长期 施肥 氮 磷 钾 水仙 

分 类 号：S682.210.6[农业科学—观赏园艺]