摘要
采用平皿计数法和抑菌圈法研究了5种化学杀菌剂（春雷霉素、三环唑、戊唑醇、稻瘟酰胺和咪鲜胺）对稻瘟病生防菌短短小芽孢杆菌Tw-2菌株（Bacilluspumilus）菌体和芽孢存活的影响。结果表明：供试的5种化学杀菌剂在高浓度下（2000rag／L）可以完全抑制短短小芽孢杆菌Tw-2菌株菌体和芽孢的存活，而低浓度下（0．32-8．00mg／L）对菌体和芽孢的存活影响较小；在5种化学杀菌剂中春雷霉素对短短小芽孢杆菌Tw．2菌株菌体和芽孢存活影响最大，其次依次是咪鲜胺、三环唑、戊唑醇、稻瘟酰胺。研究结果显示：稻瘟病生防菌短短小芽孢杆菌Tw-2菌与供试的5种化学杀菌剂分别混用防治稻瘟病，这5种杀菌剂的浓度应在0．32mg／L以下，否则会影响生防菌的效果。
Effects of 5 chemical fungicides on survival of thalli and spores of Bacillus pumilus TW-2 strain were investigated by plate count and inhibition zone methods. The results revealed that the 5 chemical fungicides could completely inhibit their survival at a high concentration（2 000 mg/L） but have a less effect on their survival at a low concentration（0.32- 8.00 mg/L）. The descending order in inhibiting effects of the 5 chemical fungicides was kasugamycin, prochloraz, tricyclazole, tebuconazole and fenoxanil. The investigation also showed that if B. pumilus TW-2 strain and one of the 5 chemical fungicides were used together to control rice blast, the fungicide should be at a low concentration （0.32 mg/L or less）,otherwise the effect of B. pumilus TW-2 strain would be less.
出处
《上海农业学报》
CSCD
北大核心
2014年第1期45-48,共4页
Acta Agriculturae Shanghai
基金
江苏省科技支撑项目(BE2011357)资助
