论文部分内容阅读
报道了新型Qo I类杀菌剂苯噻菌酯(试验代号Y5247)的生物学特性。在含50μg/m L水杨肟酸(SHAM)旁路氧化专化性抑制剂的AEA培养基上,该杀菌剂抑制水稻纹枯病菌、稻瘟病菌、油菜菌核病菌及草莓灰霉病菌菌丝生长的有效中浓度(EC50)分别为0.004、0.009、0.016和0.023μg/m L;其抑制辣椒炭疽病菌和草莓灰霉病菌孢子萌发的EC50值分别为0.448和0.019μg/m L。苯噻菌酯对防治小麦白粉病具有保护和治疗作用,EC50值分别为0.991和1.823μg/m L。其在小麦叶片上内吸输导性差,但具有一定的渗透性、良好的粘着性、耐雨水冲刷和较长的持效期。用有效成分为25μg/m L的苯噻菌酯药液喷雾处理的麦苗,14 d后接种小麦白粉病菌,其防效仍达72.48%。
The biological properties of the new Qo class I fungicide benzthiazole ester (test code Y5247) were reported. The fungicide was used to inhibit Rhizoctonia solani, Magnaporthe grisea, Sclerotinia sclerotiorum and Botrytis cinerea on AEA medium containing 50 μg / mL salicymoamic acid (SHAM) by-pass oxidative special inhibitor The effective medium concentrations (EC50) of mycelial growth were 0.004, 0.009, 0.016 and 0.023 μg / m L, respectively. The EC50 values of inhibiting mycelial growth of C. capsici and B. cinerea were 0.448 and 0.019 μg / mL, respectively. Phenothiazines have protective and therapeutic effects against wheat powdery mildew with EC50 values of 0.991 and 1.823 μg / mL, respectively. It has poor internal conductivity on wheat leaves, but has some permeability, good adhesion, resistance to rain and longer persistence. Wheat germ powder sprayed with the antibacterial activity of phenythiazide 25μg / m L was inoculated 14 days later and the control effect still reached 72.48%.