10种杀菌剂对枸杞根腐病菌的室内毒力测定

Toxicity measurement of 10 fungicides on Fusarium causing wolf berry rot root

采用菌丝生长速率法测定了10种杀菌剂对枸杞根腐病病菌的毒力。结果表明:2.5%咯菌腈的毒力最强,EC50值为1.677 mg/L,其余杀菌剂毒力大小依次为50%多·福、6.25%精甲·咯菌腈、50%多菌灵、41%乙蒜素、50%敌磺钠、75%百菌清,88%水合霉素、2%春雷霉素及20%井冈霉素对菌丝的抑制效果相对较差。10种杀菌剂对枸杞根腐病病菌菌丝生长均有抑制作用。

Mycelium growth rate method was used to measure toxicity of 10 fungicides. Results showed as follow： 2. 5% fludioxonil was proved to be most serviceable with a ECso value of 11. 677mg/L, followed by 50% carbensaim-thiram, 6.25% metalaxyl-M with fludioxonil, 50% earbendazim, 40% ethyIicin, 50% fenaminosulf, 5% chlorothalonil,. 88% oxytetracycline hydrochloride sp, 2% kasugamycin and 20% validamycin showed lower effects. All fungicides were found effective