摘要
[Objective] The control methods of the bulb rot of Iphigenia indica Kunth.caused by Fusarium orthoceras App.et Wr.var.longius （Sherb.） were explored.[Method] The effect of eight different kinds of metal ions on the pathogen was studied;the contents of seven different kinds of metal ions in rhizosphere soil and bulb were also determined.[Result] The results showed that when the concentration of Cu2＋ or Mg2＋ was greater than 1.0mg/L or the concentration of Zn2＋ or Ca2＋ was lower than 0.5mg/L,the growth of pathogen could be inhibited.The results also showed that the bulb could enrich K highly,enrich Zn and Mg,limit the absorption of Ca and Fe,and inhibit the absorption of Cu and Mn during the growth process of bulb in I.indica Kunth.[Conclusion] Micronutrient fertilizer containing Mg could be used to prevent and cure the bulb rot of I.indica Kunth.
[Objective] The control methods of the bulb rot of Iphigenia indica Kunth.caused by Fusarium orthoceras App.et Wr.var.longius （Sherb.） were explored.[Method] The effect of eight different kinds of metal ions on the pathogen was studied;the contents of seven different kinds of metal ions in rhizosphere soil and bulb were also determined.[Result] The results showed that when the concentration of Cu2＋ or Mg2＋ was greater than 1.0mg/L or the concentration of Zn2＋ or Ca2＋ was lower than 0.5mg/L,the growth of pathogen could be inhibited.The results also showed that the bulb could enrich K highly,enrich Zn and Mg,limit the absorption of Ca and Fe,and inhibit the absorption of Cu and Mn during the growth process of bulb in I.indica Kunth.[Conclusion] Micronutrient fertilizer containing Mg could be used to prevent and cure the bulb rot of I.indica Kunth.
