绿色木霉·烯酰吗啉水分散片剂对番茄灰霉病的防治效果

Efficacy of A Trichoderma viride·Dimethomorph Water-Dispersible Tablet in Controlling Botrytis cinerea Pers

本文通过对峙培养,菌间交互作用机制观察及拮抗菌培养液对病菌生长影响的测定,探讨绿色木霉菌对番茄灰霉病菌的拮抗作用及其作用机制。室内及田间试验表明,绿色木霉·烯酰吗啉水分散片剂300～600倍液,对番茄灰霉病的防效为83/～95/,且对作物安全;其对病原菌的抑制作用是通过代谢产物(酶或有毒物质)的作用表现出来的。

This article explored the possible antagonistic effects and mechanisms of Trichoderma viride on Botrytis cinerea Pers by the means of confrontation culturing,mechanistic study of bacterial interactions and evaluating the effect of antagonistic media on the growth of Botrytis cinerea Pers. Trichoderma viride.Dimethomorph water-dispersible tablet provided good control against Botrytis cinerea Pers in laboratory and field experiments. Application rates were 300 to 600 times. Controlling effect was from 83%to 95%. And no crop injury was observed. The antagonistic effects of Trichoderma viride on Botrytis cinerea Pers was produced by the role of metabolizable offspring（enzyme or poison）to Botrytis cinerea Pers.