【摘要】 采用菌丝生长速率法、孢子萌发法及共毒系数法测定了茶皂素、代森锰锌及其混剂对辣椒炭疽病菌的室内毒力以及增效比率(SR),同时测定了茶皂素与代森锰锌混剂对辣椒炭疽病室内盆栽防治效果。结果表明:茶皂素与代森锰锌配比为3∶7时对辣椒炭疽病菌菌丝生长和孢子萌发均具有较强的抑制作用,SR分别为2.45和2.48,表现为显著增效作用,且茶皂素与代森锰锌混剂(3∶7)对辣椒炭疽病室内防治效果明显优于2种单剂。更多还原

【Abstract】 The co-toxicity and its synergistic ratios(SR)of tea saponin and mancozeb to Colletotrichum capsici was determined by using mycelium growth rate method,spore germination method and co-toxicity coefficient method.Meanwhile,the controlling effect in indoor pot experiment on colletotrichum capsici and its mixture was also tested.The results showed that the best mixed ratio of tea saponin and mancozeb to inhibit mycelium growth and spore germination of Colletotrichum capsici was 3∶7,and its SR were 2.45 and 2.48,respectively.The pot test results indicated that the controlling effect of the mixture at 3∶7 ratio was obviously superior than that of the individual treatment of the 2 fungicides.更多还原