8种杀菌剂防治水稻稻曲病田间药效评价

Field Efficiency Evaluation of Eight Fungicides for Controlling Rice False Smut

为筛选防治水稻稻曲病的高效、低毒、安全杀菌剂,采用田间小区试验对吡唑醚菌酯等8种杀菌剂的田间药效进行了比较。结果表明:三唑类杀菌剂10%苯醚甲环唑WG 90 g/hm2、250 g/L丙环唑EC 90 g/hm2、12.5%氟环唑SC 90 g/hm2、430 g/L戊唑醇SC 90 g/hm2及甲氧基丙烯酸酯类杀菌剂250 g/L吡唑醚菌酯EC 112.5 g/hm2、250 g/L嘧菌酯SC 112.5 g/hm2处理的防效均在80%以上,显著高于25%咪鲜胺EC 337.5 g/hm2及20%井岗霉素SP 150 g/hm2处理的防效。在试验条件下,8个供试药剂对水稻后期生长无药害。

In order to screen excellent, low-toxicant and safe fungicides for controlling rice false smut, eight fungicides were tested in field efficacy trials. The results showed that the treatments of difenoconazole 10% WG 90 g/hm^2, propiconazole 250 g/L EC 90 g/hm^2, epoxiconazole 12.5% SC 90 g/hm^2, tebuconazole 430 g/L SC 90 g/hm^2, pyraclostrobin 250 g/L EC 112.5 g/hm2, azoxystrohin 250 g/L SC 112.5 g/hm^2 could control rice false smut effectively. The field efficiency of those treatments were all above 80%, and were significantly higher than those of prochloraz 25% EC 337.5 g/hm^2 and jinggangmycin 20% SP 150 g/hm^2.