不同杀菌剂拌种防治小麦全蚀病研究

Control of wheat take-all by seed treatments with different fungicides

为筛选防治小麦全蚀病的高效安全药剂,对多种杀菌剂在不同浓度下的防效以及对小麦的安全性进行了盆栽试验。结果表明,硅噻菌胺和苯醚甲环唑在推荐浓度下对小麦全蚀病有很好的防治效果,并且对小麦出苗、苗高没有显著影响;咯菌腈的防效与苯醚甲环唑相似,但对小麦出苗有轻微的抑制作用;其他几种杀菌剂对小麦全蚀病也能起到很好的防治效果,但是对小麦的生长有一定的抑制作用。从防治效果、对小麦安全性以及抗药性治理方面综合考虑,将硅噻菌胺、苯醚甲环唑和咯菌腈等交替或混合使用是防治小麦全蚀病比较好的策略。

To screen the effective and safe fungicides for the control of wheat take-all, the control efficacy and safety of the fungicides at different concentrations were investigated in pot experiments. The results indicated that silthiopham and difenoconazole exhibited good control efficiency in controlling wheat take-all, and did not affect the emergence and height of seedlings. The control efficiency of fludioxonil was similar to that of difenoconazole, but slightly inhibited the emergence of seedlings. The others also provided good control efficiency, but significantly inhibited the growth of wheat seedlings. Taken together with the aspects of safety to wheat and resistance management, silthiopham, difenoconazole and fludioxonil were considered suitable for the control of wheat take-all, and should be used alternatively.