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以番茄灰霉病菌田间发病叶片为试材,采用菌丝生长速率法,研究了11种杀菌剂对番茄灰霉病菌的影响,选择其中较好的8种药剂进行田间药效试验。结果表明:室内毒力测定中25%咪酰胺EC对番茄灰霉病菌的毒力最强,其EC50值为0.0397μg/mL;40%嘧霉胺SC、40%百菌清SC和80%代森锰锌WP对番茄灰霉病菌也具有较好的抑制效果。田间试验结果中25%咪酰胺EC、28%烯肟·多菌灵WP、50%啶酰菌胺WG和50%异菌脲SC对番茄灰霉病表现较高的防效,防效分别为85.57%、82.68%、80.92%和73.34%。该试验筛选出了对番茄灰霉病具有较好防效的药剂,对番茄灰霉病的药剂防治具有重要的指导意义。
In this study, the effects of 11 fungicides on Botrytis cinerea were studied by using mycelial growth rate method. The best 8 fungicides were selected for field efficacy test. The results showed that: 25% of the methyl imidacloprid EC had the strongest virulence to Botrytis cinerea, with an EC50 value of 0.0397 μg / mL; 40% pyrimethanil SC, 40% chlorothalonil SC and 80% Manganese zinc WP against Botrytis cinerea also has a good inhibitory effect. Field experiments showed that 25% of the imidacloprid EC, 28% of the oxime · carbendazim WP, 50% of the boscalid WG and 50% of the iprodione SC showed high control efficacy against Botrytis cinerea, the control effects were 85.57%, 82.68%, 80.92% and 73.34%. This experiment screened the medicament which has good control effect on gray mold disease of tomato, which has important guiding significance for the prevention and cure of tomato gray mold disease.