不同氮肥处理对万寿菊生物学性状及产量影响

Effect of Treatment on Biology Character and Yield of Tagetese recta

为探讨氮肥对万寿菊生长发育及鲜花产量和叶黄素含量的影响,研究寒地万寿菊适宜的施氮量。采用随机区组设计,在磷、钾肥施用量不变的情况下,对比6个氮肥水平对万寿菊生物学性状及产量影响。随着氮肥施用量的增加,万寿花开花延迟,株高、茎粗、株冠直径、分枝数目、单株干重和叶绿素含量都呈现先升后降的趋势;在N3处理下,鲜花产量、叶黄素含量和产量达到最高,各处理间差异极显著。在本试验条件下,寒地万寿菊种植合理的施氮量为90kg/hm2,此时鲜花产量最高可达24.11t/hm2。

The study was conducted to determine effects of nitrogen（N）supply levels on growth,flower yields and xanthophylls content of marigold,studying the cold marigold＇s appropriate amount of nitrogen.This experiment was designed to find the affection of nitrogenous fertilizer on growth and development,flower production and production of lutein to Tagetese recta in cold region.Randomized method was used,in condition of fixed amount of potash and phosphate,to analyze the affection of 6 different levels of treatment on biological properties and yield of Tagetese recta.By increasing amount of nitrogen fertilizer,delayed flowering,height,stem diameter,strains of crown diameter,number of branches,dry weight per plant and chlorophyll content were all show the same trend which increased in the first then decreased.In N 3 condition,flower yield,lutein and yield were most,significant difference among treatments.In condition of this experiment,the reasonable amount of nitrogenous fertilizer to Tagetese recta in cold region was 90 kg/hm2,which could make flower yield reach to the most 24.11 t/hm 2.