植保抗生素阿扎霉素对白菜根肿病的防治效果

摘要

In order to provide guidance for the development of azalomycin,control effect of azalomycin 12.5％ AS to Plasmodiophora brassicae were carried out under greenhouse and field conditions.The results showed that azalomycin had a good control effect to clubroot disease.The optimum concentration was 500 times-1 000 times.The optimum first using period was 5 days after sowing,and then applied every 7 d for 3 times.The maximum control effect in greenhouse pot experiment was 87.58％,while that in field experiment was 80.62％.The control effect of azalomycin to Plasmodiophora brassicae was significantly different from fluazinam 500 g/L SC.Azalomycin has the potential to develop into new fungicide for clubroot disease control.%采用盆栽试验和田间试验相结合的方法,测定了12.5％阿扎霉素水剂不同质量浓度对白菜根肿病的防治效果.试验结果表明:采用12.5％阿扎霉素水剂500～1 000倍,在大白菜播种后5d第一次用药,之后每间隔7d施药1次,共施药3次,温室盆栽试验最高防治效果为87.58％,田间试验最高防治效果为80.62％,其与对照药剂500 g/L氟啶胺悬浮剂的防治效果间差异显著.植保抗生素12.5％阿扎霉素水剂对白菜根肿病具有较好的防治效果,具备开发成防治根肿痛新型杀菌剂的潜力.