新杀菌剂霜疫必克的室内毒力及大田药效

LABORATORY TOXICITY AND FIELD CONTROL EFFICACY OF NEW FUNGICIDE SYBIK

室内对11种重要病原菌的生测结果表明,新杀菌剂霜疫必克不但抑制病原茵菌丝生长,而且也抑制病原菌孢子萌发,但不同的病原菌之间,对霜疫必克的敏感性有显著差异。盆栽试验结果指出,霜疫必克对黄瓜霜霉病有一定的治疗作用,但主要是保护作用,重复施药的保护效果明显高于1次施药的保护效果。大田药效试验证实,霜疫必克对黄瓜霜霉病的防治效果达到或接近当前广泛使用的高效杀菌剂甲霜灵铜、杀毒矾。

The results of the bioassay against 11 species of important agricultural pathogenic fungi showed that the new fungicide SYBIK inhibited the germination of the spores as well as the growth of the hyphae, and that SYBIK had different sensitivity against different fungous species. The results of the pot experiments indicated that SYBIK had some curative action, but the protective action was more important when it was applicated to protectcucumber plants from cucumber mildew disease, the protective efficacy of SYBIK against cucumber mildew disease by multiple applications was higher than by single application. The results of the field efficacy tests showed that the control efficacy of SYBIK was as same as 'metalaxy+copper sulphate' and 'oxadixyl+mancozeb'.