掌叶半夏茎基腐病病原鉴定及其防治药剂筛选

韩兴,何运转,康占海,王高杨,王冰,李亚宁,刘大群

Pathogen Identification and Fungicide Screening of Stem Base Rot Disease on Pinellia pedatisecta

Xing Han,Yunzhuan He,Zhanhai Kang,Gaoyang Wang,Bing Wang,Yaning Li,Daqun Liu

表2 供试药剂对瓜果腐霉的室内毒力测定

Table 2 Toxicity test of fungicides to Py. aphanidermatum in laboratory

编号 No. 供试药剂Test fungicide 毒力回归方程 Virulence regression equation R2 EC50(μg/mL) 1 35%精甲霜灵ES 35% metalaxyl-M ES Y=1.00X+3.89 0.974 12.81 2 玫瑰黄链霉菌Men-myco-93-63抗生素粗提物 Crude antibiotic extracts of S. roseoflavus Men-myco-93-63 Y=1.55X+2.49 0.988 41.74 3 40%氟硅唑EC 40% flusilazole EC Y=1.70X+2.05 0.992 54.16 4 99%恶霉灵TC 99% hymexazol TC Y=1.59X+2.20 0.990 56.90 5 1×1011芽孢/g枯草芽孢杆菌WP 1×1011spores per gram B. subtilis WP Y=0.49X+3.76 0.929 359.80 6 1×106孢子/g寡雄腐霉菌WP 1×106 spores per gram Py. oligandrum WP Y=0.54X+3.59 0.976 414.50 7 3%甲霜·恶霉灵AS 3% metalaxyl·hymexazol AS Y=0.83X+2.56 0.981 864.00 8 50%烯酰吗啉WP 50% dimethomorph WP Y=1.13X+1.28 0.970 1 940.00