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以6个不同种(Trichoderma hamatum、T.virens、T.citrinoviride、T.longibrachiatum、T.afroharzianum和T.asperelloides)的30株木霉菌株为试材,采用室内平板拮抗、温室盆栽和田间接种生防木霉菌的方法,研究了不同木霉菌对辣椒疫病的防治效果。结果表明:木霉菌对辣椒疫霉菌菌丝生长具有较好的抑制效果,不同木霉菌株间抑制率差异显著(P<0.05),平板拮抗抑制率在60.00%以上的菌株占总数的70%;木霉菌株T10(T.hamatum)的防控效果显著高于其它木霉菌株,在温室接种辣椒疫霉菌30d后防控效果达到71.60%;在田间,木霉菌株T10对辣椒疫病的防治效果可达68.02%,与对照药剂烯酰吗啉的防治效果相当,且能够显著增加辣椒果实的产量,单株增产率达到14.30%,高于烯酰吗啉。
Thirty Trichoderma strains from 6 different species (Trichoderma hamatum, T. virens, T. citrinoviride, T. longibrachiatum, T. afroharzianum and T. asperelloides) were used as experimental materials, with indoor plate antagonism, greenhouse pot and field inoculation Anti-Trichoderma method to study the different Trichoderma against pepper disease control effect. The results showed that Trichoderma had good inhibitory effect on the growth of Phytophthora capsici mycelium. The inhibition rate was significantly different between Trichoderma strains (P <0.05), and the strains with the inhibition rate of plate Antagonism above 60.00% accounted for 70% of the total. The control effect of Trichoderma strain T10 (T. hamatum) was significantly higher than that of other Trichoderma strains, and the control effect reached 71.60% after inoculation of P. capsici in the greenhouse for 30 days. In the field, the control efficacy of Trichoderma strain T10 on pepper blight was Up to 68.02%, which is equivalent to the control agent dimethomorph, and can significantly increase the yield of pepper fruit. The yield per plant reached 14.30%, higher than that of dimethomorph.