五种杀菌剂对库尔勒香梨腐烂病的防效

Control Effect of Five Fungicides Rot Disease Prevention on Korla Pear

以库尔勒香梨腐烂病菌田间发病枝条为试材,采用生长速率法和刮除病斑后涂抹药剂的方法,研究了5种不同杀菌剂对库尔勒香梨腐烂病菌的影响。结果表明:室内毒力测定中阿米妙收、银典和世高的防效较好,其EC50值分别为0.0193、0.0312、0.0563μg/mL;凯润和好力克防效次之;田间防治时阿米妙收50倍、凯润50倍防效最好,病斑愈合宽度和治愈率分别为17.1mm、93.6%和16.8mm、90.0%;好力克20倍防治效果次之,病斑愈合宽度和治愈率分别为9.3mm、82.4%;银典防效相对较差。

Taking the field disease shoots of Korla fragrant pear canker as materials, using growth rate method and curettage of lesion after smearing agent method,the effect of 5 fungicides on Korla pear rot pathogen were studied. The results showed that control effect of Ami Miao-shou, Yin Dian and Shi Gao were better, the EC50 values were 0. 0193, 0. 0312 and 0. 0563μg/mL; control effect of Kai Run and Hao Li-ke were worse than three of them. 50 times Ami Miao-shou and 50 times Kai Run were the best control effect,their width of lesion healing and cure rate were 17. 1 mm, 16. 8 mm and 93. 6%,90. 0%;the width and the cure rate of 20 times Hao Li-ke were 9. 3 mm and 82. 4%;the control effect of Yin Dian was worse.