【摘要】 室内及田间试验结果表明:20%SYP-3399SC、20%SYP-4155EC、20%SYP-3343SC对黄瓜霜霉病的防效较为突出。20%SYP-4155EC(150ga.i./hm2)、20%SYP-3343SC(150ga.i./hm2)、20%SYP-3399SC(900ga.i./hm2)的防效与25%嘧菌酯SC(100ga.i./hm2)、72%霜脲氰·代森锰锌WP(1440ga.i./hm2)的防效相当,高于68%精甲霜灵·代森锰锌WG(675ga.i./hm2)、25%吡唑醚菌酯EC(100ga.i./hm2)的防效。3种候选杀菌剂在试验剂量范围内对作物安全。更多还原

【Abstract】 The results of laboratory and field trial showed that SYP-3399 20% SC, SYP-4155 20% EC and SYP-3343 20% SC had higher control efficacy than the other three candidate strobilurin fungicides against cucumber downy mildew. SYP-4155 20% EC, SYP-3343 20% SC, SYP-3998 20% SC(150, 150, 900 g a.i./ha) was not significantly different from that of azoxystrobin 25% SC(100 g a.i./ha), cymoxanil-mancozeb 72% WP(1440 g a.i./ha), and higher than that of mefenoxam-mancozeb 68% WG(675 g a.i./ha), pyraclostrobin 25% EC(100 g a.i./ha). Three candidate fungicides was safe to corps at the dosage of the test.更多还原