摘要
采用菌丝生长速率法测定了嘧霉胺对梨黑斑病病原菌链格孢菌（Alternaria alternata）的毒力，并进行其对梨黑斑病的田间药效试验。结果表明：嘧霉胺对梨黑斑病菌菌丝生长抑制的EC50为0．1268μg／mL；40％嘧霉胺可湿性粉剂250-500mg／L对梨黑斑病的防效为66％～82％，且该药剂在本试验剂量范围内对梨树安全。
The fungitoxicity of pyrimethanil against Alternaria alternata was assessed by the mycelial growth rate method, and the field trial efficacy of pyrimethanil in controlling the pear black spot was evaluated. The results showed that the EC50 of pyrimethanil to Alternaria alternata was 0. 126 8 μg/mL. The efficacy of 40% pyrimethanil WP was 660%--82% in controlling the pear black spot at the rate of 250--500 mg/L. The study also showed that fungitoxicity was safe to pear trees at the tested dosages.
出处
《植物保护》
CAS
CSCD
北大核心
2009年第4期162-163,167,共3页
Plant Protection
基金
江苏省农业科技自主创新项目[CX(08117)]
江苏省科技基础设施计划项目(BM:2008008)
农业科技成果转化项目(2008GB2C100100)
关键词
嘧霉胺
梨黑斑病
毒力
防治效果
pyrimethanil
pear black spot
fungitoxicity
control efficacy
