不同药剂防治马铃薯黑痣病的田间药效试验

Field Efficacy Test of Different Pesticides against Potato Black Scurf

为筛选出防治马铃薯黑痣病最佳药剂,对9种杀菌剂和5种菌肥进行田间药效试验。结果表明,30%噻呋·嘧菌酯30mL/667m^2、250g/L戊唑醇5mL/667m^2和300g/L醚菌·啶酰菌5mL/667m2防效较好,依次为62.4%、53.1%和50.7%,其他药剂防效均低于50%;测产结果表明,1,2-苯并噻唑-3-铜30mL/667m2、1,2-苯并噻唑-3-铜40mL/667m^2、250g/L戊唑醇5mL/667m^2、300g/L醚菌·啶酰菌5mL/667m^2和30%噻呋·嘧菌酯30mL/667m^2的总产量分别为3287.80kg/667m^2、3172.46kg/667m^2、3104.37kg/667m^2、3080.75kg/667m^2和2654.14kg/667m^2,增产率分别是42.54%、37.54%、34.59%、33.56%和15.06%,商品薯产量占总产量的比值分别为50.85%、48.31%、66.56%、47.68%和65.29%。综合考虑,药剂噻呋·嘧菌酯和戊唑醇具有良好的防病促生效果,建议在生产上推广应用。

In order to screen the best pesticides to prevent and control potato black scurf,nine fungicides and five bacterial fertilizer were tested in the field.The results showed that the control effects of 30%thiflufur azoxystrobin at 30 mL/667m^2,250 g/L tebuconazole at 5 mL/667m^2 and 300 g/L kresoxim-methly-boscalid at 5 mL/667m^2 were better,followed by 62.4%,53.1%and 50.7%,respectively.Other treatments are less than 50%.Determination of yield results showed that the total yields of 1,2-benzothiazole-3-copper at 30 mL/667m^2,1,2-benzothiazole-3-copper at 40 mL/667m^2,250 g/L tebuconazole at 5 mL/667m^2,300 g/L kresoxim-methly-boscalid at 5 mL/667m^2 and 30%thiflufur azoxystrobin 30 mL/667m^2 were 3 287.80 kg/667 m^2,3 172.46 kg/667 m^2,3 104.37 kg/667 m^2,3 080.75 kg/667 m^2 and 2 654.14 kg/667 m^2,respectively,with the yield increasing rates of 42.54%,37.54%,34.59%,33.56%and 15.06%.The ratios of commercial potato yields to total production were 50.85%,48.31%,66.56%,47.68%and 65.29%,respectively.Comprehensive consideration,thiflufur azoxystrobin and tebuconazole have good anti-disease and promoting effects.Proposed production can be large-scale application of them.