三种涂抹剂防治苹果腐烂病田间药效对比试验

摘要

In order to effectively control the apple rot disease ,three palnting reagents were used for field control effect comparison of apple rot disease ,such as Benziothiazolinone ,Pythium oligandrum ,Thiophanate‐methyl . The results showed that the control effect of Benziothiazolinone was the best ,control efficiency of recurrence and control efficiency of new disease scar were 89 .78% and 87 .84% respectively .It was suggested that Benzi‐othiazolinone should be used to control the rot in practice .The control effect of Pythium oligandrum respective‐ly were 76 .84% and 71 .36% ,which was slightly lower than the value of thiophanate‐methyl .%为了有效防治苹果腐烂病，选取噻霉酮、寡雄腐霉、甲基硫菌灵3种作用方式不同的涂抹剂作为苹果腐烂病进行试验药剂对比试验。结果表明：在苹果腐烂病发生严重的果园3种涂抹剂均有一定的防治效果。噻霉酮处理的防效最好，对病疤复发防效和新增病疤防效均明显高于另两种涂抹剂，防效分别为89．78％和87．84％；寡雄腐霉处理基本能够控制苹果腐烂病的发生，对苹果腐烂病病疤重犯的防效为76．84％，略低于甲基硫菌灵防效。寡雄腐霉对苹果腐烂病新增病疤防效为71．36％，明显低于甲基硫菌灵的药效。腐烂病防治适期应在早春苹果发芽前病害发生之前或发生初期，试验期间未发现各供试药剂对果树有不良影响。