【摘要】 进行了4种甲氧基丙烯酸酯类杀菌剂对马铃薯黑痣病菌的室内毒力测定,防治马铃薯黑痣病的室内盆栽试验及田间药效试验。采用菌丝干重法测定4种甲氧基丙烯酸酯类杀菌剂室内毒力结果表明,烯肟菌胺、唑菌酯、唑胺菌酯及烯肟菌酯对马铃薯黑痣病菌毒力相当,与嘧菌酯无明显差异。室内盆栽试验结果表明,相对于其他测试药剂,烯肟菌胺与唑胺菌酯对马铃薯黑痣病防效相对更好,分别为74.3%和77.1%。田间药效试验结果表明,播种时,沟施烯肟菌胺或唑胺菌酯对马铃薯黑痣病有较好抑制作用,推荐剂量均为187.5 g/hm~2。更多还原

【Abstract】 Four strobilurin fungicides were tested for their toxicities on Rhizoctonia solani by laboratory bioassay,in greenhouse pot experiment and open field trials.The bioassay using weighting dry mycelium method indicated that fenaminstrobin,pyraoxystrobin,pyrametostrobin and enostroburin had similar toxicity to R.solani and no obvious difference from azoxystrobin,the control.The pot experiment showed that fenaminstrobin and pyrametostrobin had better control efficacy than other fungicides tested,being 74.3% and 77.1%,respectively.Field trials demonstrated that furrow application of fenaminstrobin and pyrametostrobin at the rate of 187.5 g/ha had good efficacy on control of potato black scurf.更多还原