化学农药与芽胞杆菌M3、S11菌株对西芹黄萎病的防治效果

利用化学药剂与生防菌结合，对由尖孢镰刀菌芹菜专化型引起的西芹黄萎病进行综合防治研究。结果表明：苗期使用50 %多菌灵可湿性粉剂（WP）、50 %福美双?多菌灵WP（活根菌灭）或40 %噁霉灵WP（噁霉敌）灌根均能显著消除育苗基质中的病原菌孢子，孢子下降率达99.00 %以上；大田继续使用上述3种化学药剂或改用生防菌芽孢杆菌S11和M3，都能够显著降低西芹黄萎病发病率，防治效果最高为85.98 %；其中持续单独使用50 %多菌灵WP或苗期使用50 %多菌灵WP、大田改用生防菌芽孢杆菌对西芹的生长没有不良影响。

Control Tests of Celery Yellow Wilt by Fungicides and Bacillus M3 or S11 Strain

Celery yellow wilt is caused by Fusarium oxysporum f. sp. apii. The integrated control of this disease by fungicides and bio-control bacteria were studied. The results showed that the concentration of pathogenic spores in seedling substrate were reduced obviously by treated with 50 % carbendazim WP, 50 % thiram-carbendazim WP or 40 % carbendazim-thiram WP. The elimination rates of spores were over 99.00 %. After the seedlings were transplanted into the fields, the disease incidence of celery yellow wilt were decreased greatly by treated with those 3 fungicides respectively or treated instead of Bacillus strain S11 or M3. The highest control effect was up to 85.98 %. Among these treatments, 50 % carbendazim WP continuous treatment or using Bacillus S11 or M3 instead 50 % carbendazim WP in the filed stage had no negative influence on the height and weight of celery.