不同浓度氮、磷、钾对蝴蝶兰幼苗生长的影响

Effects of Different Concentrations of Nitrogen,Phosphorus and Potassium on the Growth of Phalaenopsis Seedlings

采用氮、磷、钾3因素4水平全因子试验设计,研究了不同浓度营养液处理对蝴蝶兰幼苗生长的影响。结果表明:氮浓度250mg/L、磷浓度15mg/L、钾浓度150mg/L对蝴蝶兰幼苗生长、叶面积增长较适合。高磷(60mg/L)降低幼苗叶长、叶宽及叶面积生长速率;高氮(350mg/L)促使叶细长薄弱,对提高叶面积增长率作用不大;高钾(250mg/L)有助于幼苗叶面积增长率提高和干物质的积累;幼苗叶面积的增长率与叶宽的增长率呈显著正相关;施肥有助于叶宽增长从而促进蝴蝶兰幼苗的叶面积增长。

Using three factors （nitrogen, phosphorus and potassium） four levels experimental design, the three concentrations Of nitrogen＇,phosphorus, potassium nutrition on Phalaenopsis seedlings growth were studied. The results showed that nitrogen concentration of 250mg/L,the phosphorus concentration of 15 mg/L,potassium concentration of 150 mg/L on the Phalaenopsis seedlings growth and leaf area growth was more suitable. High phosphorus concentrauon （60 mg/L）,the seedlings growth rate of leaf length,leaf width and leaf area were reduced High nitrogen concentration （350 mg/L） result in slender Weak leaves and lower the seedlings growth rate of leaf length, leaf width and leaf area; High potassium （250 rag/L） contribute to the dry matter accumulation and high area growth rate of seedlings leaf. The growth rate of leaf area and leaf width had a Significant positive correlation. Fertilization could contribute to enlarge growth rate of leaf widich and to improve the growth rate of leaf area.