5种种衣剂防治小麦主要土传病害研究

Control effect of five kinds of seed coating formulations on soil-borne diseases in wheat

研究了5种种衣剂对小麦土传病害纹枯病、全蚀病和根腐病的防治效果。结果表明,230g/L吡虫啉·苯醚·咯悬浮种衣剂综合防治效果优于其他药剂处理,对小麦纹枯病的防治效果为73.51%-95.05%,对小麦全蚀病的防治效果为73.01%-87.41%,对小麦根腐病的防治效果为65.51%-92.09%。按药效其次依次是60g/L戊唑醇悬浮种衣剂、30g/L苯醚甲环唑悬浮种衣剂、25g/L咯菌腈悬浮种衣剂、15%多·福悬浮种衣剂。随着小麦的生长,各处理的防效逐渐降低,但直到枯白穗期还有一定防治效果。同时230g/L吡虫啉·苯醚·咯悬浮种衣剂对小麦增产作用明显。

Effects of five kinds of seed coating formulations were investigated to control the soil-borne diseases in wheat.In summary,the control effect of 230 g/L imidacloprid·difenoconazole·fludioxonil FS at the recommended dose were 73.51%-95.05%on wheat sharp eyespot,73.01%-87.41%on wheat take-all,and65.51%-92.09% on wheat root rot,followed by the efficacy of 60 g/L tebuconazole FS,30 g/L difenoconazole FS,25 g/L fludioxonil FS and 15% carbendazim·thiram FS.The five seed coating formulations were effective against the wheatsoil-borne diseases till the dry white heading stage.In addition,treatment with 230 g/L imidacloprid·difenoconazole·fludioxonil FS could remarkably increase the wheat yield.