翻耕方式与拌种剂对冬小麦产量形成与茎基腐病防治的影响OA

To clarify the effects of soil ploughing methods and seed dressing agents on the winter wheat yield formation and Fusarium crown rot control,and to determine the green production model for winter wheat,this study adopted a two－factor experimental design.Factor 1 was the ploughing methods of rotary tillage and deep ploughing.Factor 2 was the coating agents of 33%fenoconazole flufeni-trile thiamethoxam(T1),27.2%flufenitrile thiamethoxam FS(T2),and 60%tebuconazole FS+30%thiamethoxam FS(T3),respective-ly.Determined tillering,yield and its composing factors,and the disease index of Fusarium crown rot.The results showed that com-pared with rotary tillage,deep tillage increased the basic seedlings number and panicles number by 3.5%and 3.4%respectively,the roots number and length at the jointing stage increased by 0.83 roots and 0.58 cm,the 1 000－grain weight increased by 3.7%,the yield significantly increased by 10.1%,and the control effect of Fusarium crown rot significantly increased by 37.1%.The seed dress-ing agent had no significant effect on the basic seedlings and tillers.At the jointing stage,the number of roots in the T3 treatment in-creased by 0.95 roots and 0.25 roots respectively compared to T1 and T2 treatments,and the root length increased by 0.23 cm and 0.46 cm respectively.The yield of T2 and T3 treatments increased by 5.5%and 5.6%,respectively,compared with T1.The control effect of the T2 seed coating agent on Fusarium crown rot was significantly increased by 32.6%and 21.3%,respectively,compared with T1 and T3.In summary,under the conditions of this experiment,winter wheat can achieve simultaneous improvement in yield and Fusarium crown rot control by using deep ploughing and applying 27.2%clothianidin FS seed dressing agent,which can be fur-ther promoted and applied.