摘要
为筛选防治水稻穗颈瘟高效、低毒、安全杀菌剂,采用田间小区试验对嘧菌酯等9种杀菌剂进行药效比较。结果表明:50%嘧菌酯WG 180.0 g/hm2、20%稻瘟酰胺SC 300.0 g/hm2、40%稻瘟灵WP 600.0 g/hm2、75%三环唑WP 281.3 g/hm2的防效较高,病穗率防效及病指防效分别为85.86%~87.47%及89.68%~90.93%;50%醚菌酯WG 120.0 g/hm2、12.5%氟环唑SC 100.0 g/hm2、10%己唑醇SC 75.0 g/hm2、430 g/L戊唑醇SC 80.6 g/hm2处理的病穗率防效及病指防效分别为72.74%~80.85%及78.61%~84.34%;25%咪鲜胺EC 337.5 g/hm2处理的防效较差,病穗率防效及病指防效分别为66.59%和72.70%。防治水稻穗颈瘟可以选用三环唑、稻瘟灵、稻瘟酰胺、咪鲜胺等常规杀菌剂及嘧菌酯、氟环唑、戊唑醇等新型高效杀菌剂。
To screen excellent, low toxicity and safety fungicides for controlling rice neck blast, nine fungicides were tested by field efficacy trials. The results showed that the diseased ears rate control effects and disease index control effects of azoxystrobin 50% WG 180.0 g/hm2, fenoxanil 20% SC 300.0 g/hm2, isoprothiolane 40% WP 600.0 g/hm2 and tricyclazole 75% WP 281.3 g/hm2 were 85.86%-87.47% and 89.68%-90.93%, respectively. The diseased ears rate control effects and disease index control effects of kresoxim-methyl 50% WG 120.0 g/hm2, epoxiconazole 12.5% SC 100.0 g/hm2, hexaconazole 10% SC 75.0 g/hm2 and tebuconazole 430 g/L SC 80.6 g/hm2 were 72.74%-80.85% and 78.61%-84.34%, respectively. The diseased ears rate control effect and disease index control effect of prochloraz 25% EC 337.5 g/hm2 were 66.59% and 72.70%.
出处
《现代农药》
CAS
2016年第1期48-50,共3页
MODERN AGROCHEMICALS
基金
江苏省农业科技自主创新资金项目[CX(15)1054]
关键词
杀菌剂
水稻穗颈瘟
药效比较
嘧菌酯
氟环唑
fungicide
rice neck blast
field efficacy comparison
azoxystrobin
epoxiconazole