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[目的]验证叶菌唑对小麦病害的生物活性和防效。[方法]室内活性测定和大田试验方法,测定叶菌唑对小麦赤霉病菌、小麦白粉病菌和小麦锈病的活性。[结果]室内活性测定结果表明:叶菌唑对小麦赤霉病菌、小麦白粉病菌和小麦锈病有优异的杀菌活性,其EC50值分别为0.101、1.08、1.21 mg/L,活性高于对照药剂己唑醇和三唑酮。田间小区试验结果表明,叶菌唑在30~90 g a.i./hm2的处理剂量下,施药1~2次,对小麦白粉病具有较好的防治效果,防效在85.72%~96.09%之间。[结论]为叶菌唑防治几种小麦病原菌的大田防治提供了剂量筛选依据。
[Objective] The research aimed to verify the biological activity and control effect of metconazole on wheat diseases. [Method] The indoor activity assay and field test method were used to determine the activity of meconazole against Fusarium graminearum, powdery mildew and wheat rust. [Result] The results of indoor activity assay showed that metconazole had excellent bactericidal activity against Fusarium graminearum, wheat powdery mildew and wheat rust with EC50 values of 0.101, 1.08 and 1.21 mg / L, respectively, which were higher than those of the control Niacin and triadimefon. Field experiments showed that metconazole was applied for 1 ~ 2 times at the treatment dose of 30 ~ 90 g ai / hm2, and had a good control effect on wheat powdery mildew with control effects between 85.72% ~ 96.09% . [Conclusion] The dose screening basis was provided for the prevention and control of several wheat pathogens by field control of metconazole.