为筛选防治沙县糯山药炭疽病的最佳复配杀菌剂,在山药炭疽病发生初期(仅有零星叶片发病),采用田间药效试验评价不同复配组合对沙县糯山药炭疽病的防治效果.结果表明:10%苯醚甲环唑+30%吡唑醚菌酯防治山药炭疽病的综合防治效果最好,其 2000 倍液在炭疽病发生初期的第 1 次、第 2 次、第 3 次施药防效分别达 56.81%、74.53%、86.12%,且持效期较长,产量比对照增产 25.89%;30%吡唑醚菌酯+25%丙环唑在炭疽病发生初期的第 1 次、第2 次、第 3 次喷施也有较好的防治效果,但持效期较短.其中,10%苯醚甲环唑+25%丙环唑在炭疽病发生初期的第 1 次施用时效果最佳,防治效果达 57.82%,但在炭疽病发生初期的第2 次、第 3 次喷施防治效果较差.综合评价,10%苯醚甲环唑与 30%吡唑醚菌酯复配对沙县糯山药炭疽病的防治具有明显的增效作用,结果可为沙县糯山药炭疽病的田间防治提供参考.
In order to screen the best compound fungicide for the prevention and control of glutinous yam anthracnose in Shaxian County,the control effect of different compound combinations on glutinous yam anthracnose in Shaxian County was evaluated by using the field efficacy trials in the early stage of yam anthracnose occurring(only sporadic leaves infected).The results showed that:10%difenoconazole+30%pyraclostrobin had the best comprehensive control effect against yam anthracnose.In the early stage of anthracnose occurring,the control effect of the first,second and third application of its 2000 times solution was 56.81%,74.53%and 86.12%,respectively,with the longer effective duration,and the yield was 25.89%higher than that of the control group.The first,second and third application of 30%pyraclostrobin+25%propiconazole at the early stage of anthracnose occurring also had good control effect,but the effective duration was shorter.Among them,the first application of 10%difenoconazole+25%propiconazole had the best control effect at the early stage of anthracnose occurring,with the prevention and control effect of 57.82%.However,the second and third application of it had the poor control effect at the early stage of anthracnose occurring.According to the comprehensive evaluation,the combination of 10%difenoconazole and 30%pyraclostrobin had obvious synergistic effect on the prevention and control of glutinous yam anthracnose in Shaxian County.The results could provide reference for the field prevention and control of glutinous yam anthracnose in Shaxian County.
邓才生
三明市农业科学研究院/福建省(山区)作物遗传改良与创新利用重点实验室,福建 三明 365509
园艺学与植物营养学
沙县糯山药;杀菌剂;复配;炭疽病;防治效果
Glutinous yam in Shaxian County;Fungicides;Compounding;Anthracnose;Control effect
《福建农业科技》 2024 (003)
21-25 / 5
三明市科技计划项目(2021-N-13).
10.13651/j.cnki.fjnykj.2024.03.004
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