孜然根腐病田间药效试验

孜然根腐病大田防治试验使用了11种化学药剂和枯草芽孢杆菌B1、B2进行拌种和拌种+喷药两种处理。在两种处理中,3%苯醚甲环唑悬浮种衣剂、50%异菌脲可湿性粉剂、25%丙环唑乳油、70%代森锰锌+2.5%咯菌腈乳油、50%多菌灵+2.5%咯菌腈乳油(1∶1)、枯草芽孢杆菌B1(10倍)液、枯草芽孢杆菌B1(30倍)液和50%多菌灵+B1(20倍)液+B2倍(20倍)液]拌种处理均与对照存在显著性差异;各处理的相对防效均不同,25%丙环唑乳油、枯草芽孢杆菌B1(10倍)液和50%多菌灵+2.5%咯菌腈乳油(1∶1)相对防效达到41.87%～58.83%,与其它处理间存在极显著差异。在拌种处理后喷施53%精甲霜灵对孜然根腐病也有一定防治效果。

Study on the Root Rot of Cucuminum cyminum L. in Field Trials

In field trials, the treatments of spraying and seed dressing of 11 pesticides and Bacillus subtilis B1, B2 controlled root rot pathogen of Cucuminum cyminum L.. In the treatments of 3% difenoconazole, 50% iprodione, 25% propiconazol, 70% mancozeb and 2,5% fiudioxonil, 50% carbendazim and 2.5% fiudioxonil, Bacillus subtilis B1 （10x）, Bacillus subtilis B1 （30 x）, 50% carbendazim and Bacillus subtilis B1 （20 x）＋ B2 （20 x ）], there were obvious differences in their production compared with the CK after seed dressing. The relative control efficacy of 25% propiconazol, Bacillus subtilis B i （10x）, 50% carbendazim and 2.5% fludioxonil, on root rot of Cucuminum cyminum L. was up to 41,87% to 58.83% and had significant differences compared with other treatments. After the seed dressing, spraying metalaxyl-M had a certain control efficacy on the root rot ofCucuminum cyminum L..