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在食用菌生产中,用多菌灵来防治杂菌污染很普遍,多数效果较好,但也有出问题的。出问题的主要原因是对多菌灵的性质没弄清,使用方法不当。因此,有必要就这些问题来谈一谈。一、多菌灵是种什么药多菌灵(Carbendazol)又称棉萎灵和苯骈咪唑44号,化学名N-(苯骈咪唑基-2)氨基甲酸甲酯。分子式:C_9H_9N_3O_2,分子量191.19。纯品为白色结晶状粉末,工业品为棕色粉末状。性质稳定,熔点307～312℃,不溶于水,微溶于氯仿、丙酮等有机溶剂,能溶于无机酸及醋酸等。多菌灵为广谱内吸杀真菌剂,对子囊菌纲和半知菌类中的大多数病原菌有效,能防治多种农作物病害,对人畜毒性较低。在食用菌生产中常被用来拌培养料,以杀灭其中的杂菌或抑制杂菌生长。正因为它是一种广谱杀真菌剂,对食用菌的生长发育也有一定的危害,所以使用时必须谨慎。
In the production of mushrooms, the use of carbendazim to control bacterial contamination is common, most of the better, but there are problems. The main reason for the problem is that the nature of carbendazim did not clarify, improper use. Therefore, it is necessary to talk about these issues. First, the carbendazim is what kind of medicine Carbendazol, also known as cotton wilt and benzimidazole No. 44, the chemical name N- (phenyl-imidazole-2) methyl carbamate. Molecular formula: C_9H_9N_3O_2, molecular weight 191.19. Pure white crystalline powder, industrial products for the brown powder. Stable, melting point 307 ~ 312 ℃, insoluble in water, slightly soluble in chloroform, acetone and other organic solvents, soluble in inorganic acids and acetic acid. Carbendazim is a broad-spectrum systemic fungicide that is effective against most pathogenic bacteria in Ascomycetes and Candida, preventing and curing a wide range of crop diseases, and is less toxic to humans and animals. In the production of edible mushrooms are often used to mix culture materials to kill the bacteria in them or inhibit the growth of bacteria. Because it is a broad-spectrum fungicide, the growth of edible fungi also have some hazards, so use must be cautious.