化学药剂增效配方对辣椒疫病的控制作用

采用菌丝生长速率法测定了9种化学药剂对辣椒疫病菌的毒力,其中烯酰吗啉（EC50=0.48μg/mL）和氟吡菌胺（EC50=0.32μg/mL）的毒力最强。共毒系数测定结果表明,百菌清∶氟吡菌胺为1∶9和烯酰吗啉∶氟吡菌胺为2∶8时,表现出增效作用,分别配制成20%百·氟悬浮剂和20%烯·氟悬浮剂。盆栽试验结果表明,处理后10 d,20%烯·氟悬浮剂2 000倍对辣椒疫病的防治效果在96%以上;20%百·氟悬浮剂1 000倍对辣椒疫病的防治效果为75%左右。20%烯·氟悬浮剂2 000倍对辣椒疫病的防治效果与对照药剂50%烯酰吗啉可溶性粉剂1 000倍液的防治效果相当,显著高于68.75%银法利...

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Bibliographic Details
Published in广东农业科学 Vol. 41; no. 9; pp. 104 - 107
Main Author 蒲小明 林壁润 沈会芳 张景欣 黄宁
Format Journal Article
LanguageChinese
Published 广东省农科院植物保护研究所/植物保护新技术重点实验室,广东广州,510640 2014
Subjects
共毒系数
悬浮剂
盆栽试验
辣椒疫病
悬浮剂
盆栽试验
辣椒疫病
共毒系数
Online AccessGet full text
ISSN1004-874X

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Summary:采用菌丝生长速率法测定了9种化学药剂对辣椒疫病菌的毒力,其中烯酰吗啉（EC50=0.48μg/mL）和氟吡菌胺（EC50=0.32μg/mL）的毒力最强。共毒系数测定结果表明,百菌清∶氟吡菌胺为1∶9和烯酰吗啉∶氟吡菌胺为2∶8时,表现出增效作用,分别配制成20%百·氟悬浮剂和20%烯·氟悬浮剂。盆栽试验结果表明,处理后10 d,20%烯·氟悬浮剂2 000倍对辣椒疫病的防治效果在96%以上;20%百·氟悬浮剂1 000倍对辣椒疫病的防治效果为75%左右。20%烯·氟悬浮剂2 000倍对辣椒疫病的防治效果与对照药剂50%烯酰吗啉可溶性粉剂1 000倍液的防治效果相当,显著高于68.75%银法利悬浮剂1 000倍的防治效果。
Bibliography:44-1267/S
The toxicity of 9 fungicides against pepper phytophthora blight were tested with mycelium growth rate method. The results indicated that the highest toxicity of fungicides were dimethomorph（EC50=0.48 μg/mL） and fluopicolide（EC50=0.32 μg/mL）. The synergisms were chosen by the method of co-toxicity coefficience, and the ratios were that chlorothalonil /fluopicolide（1∶9） and dimethomorph/fluopicolide（2∶8）. The 20% suspension concentrates（SC） were prepared with best synergism ratio. After 10 d treatment, the pot experiment reuslts showed that the control effect of dimethomorph/fluopicolide 20% SC diluted 2 000 times was up to 96%; the control effect of chlorothalonil/fluopicolide 20% SC diluted1 000 times was 75%. Statistic analysis indicated that the control effect of dimethomorph/fluopicolide 20% SC diluted 2 000times was equal to dimethomorph 50% SC diluted 1 000 times and higher than that of 68.75% Infinito SC diluted 1 000times significantly.
PU Xiao-ming, LIN Bi-run, SHEN Hui-fang, ZHANG Jing-xin, H
ISSN:1004-874X