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帚用高粱炭疽病防治药剂筛选

Agrochemicals(2022)

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Abstract
[目的]筛选出防治帚用高粱炭疽病的高效药剂.[方法]采用菌丝生长速率法和分生孢子萌发抑制法测定了23种杀菌剂对高粱炭疽菌的室内生物活性,并选用5种抑菌效果较好的药剂进行田间试验.[结果]250 g/L吡唑醚菌酯EC、250g/L嘧菌酯SC、50%多菌灵WP室内抑菌效果较好,对菌丝的EC50值分别为0.0029、0.0143、0.0054mg/L;对分生孢子的EC50值分别为0.0039、0.0586、0.1887 mg/L.末次喷施3种药剂10 d后的田间防效分别为91.00%、66.20%、60.26%,分别增产4.80%、5.96%、11.75%.[结论]250 g/L吡唑醚菌酯EC、50%多菌灵WP、250 g/L嘧菌酯SC可应用于田间防治高粱炭疽病.
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