不同种衣剂对玉米病害防效及产量的影响OA

This study explored the effect of different seed coating agents on the disease control efficacy and yield of maize,aiming to screen suitable seed coating agents for maize production.With blank treatment as the control(CK),12 different seed coating agents were selected to treat the maize variety'Xinzhongyu 801',and the emergence rate,incidence of stem rot,incidence of ear rot,agronomic traits,and yield were measured.Furthermore,the correlation analysis was carried out for 13 measured indexes.The results were summarized as follows.Except T1,the other treatments had promoting effect on the emergence of'Xinzhongyu 801'.T9 and T11 showed certain control effect on stem rot and lodging at the grain-filling stage.Except for T2,T3,and T6,the other treatments had satisfactory control effect on ear rot at the maturity stage.The yields per plot in T2,T4,and T9 were 1.38%,1.63%,and 2.14%higher than that of CK,respectively,with no significant difference.Correlation analysis revealed a highly significant positive correlation between ear height and plant height,a highly significant positive correlation between lodging rate and incidence of stem rot,and a highly significant negative correlation between control effect and disease index.In summary,T9(clothianidin+silthiofame)capable of increasing the emergence rate and yield of maize,controlling stem rot at the grain-filling stage,ear rot at the maturity stage,and resisting lodging,was served as the most suitable seed coating agent for maize production.