【摘要】 [目的]评价250 g/L丙环唑乳油对太子参根腐病的室内生物活性和田间防效。[方法]采用生长速率法进行室内生物活性测定及灌根法开展田间防治研究。[结果]室内生测结果表明：250 g/L丙环唑乳油的EC₅₀为33.62 mg/L。田间试验结果表明：250 g/L丙环唑乳油的制剂用量450、600、750 mL/hm²处理的防效为60.23%～75.16%。[结论]250 g/L丙环唑乳油对太子参根腐病具有较好的防效，且对太子参生长安全，可用于田间太子参根腐病防治。更多还原

【Abstract】 [Aims] To evaluate the laboratory biological activity and field efficacy of propiconazole 250 g/L EC against root rot of Pseudostellaria heterophylla. [Methods] The laboratory biological activity was studied with the mycelial growth rate method, and the field trial was carried out by root irrigation. [Results] The results of the laboratory biological activity showed that the EC₅₀of propiconazole 250 g/L EC was 33.62 mg/L. The field trial results showed that the control efficiency of propiconazole 250 g/L EC was 60.23%-75.16% at 450, 600 and750 mL/ha. [Conclusions] Propiconazole 250 g/L EC has good control efficacy on the root rot of P. heterophylla,with good safety on its growth. It can be used to prevent the root rot of P. heterophylla in the field.更多还原