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从南宁市郊11个病区采集的四季豆枯萎病株标样,经分离培养鉴定和致病性测定,证明其病原菌为尖孢镰刀菌菜豆专化型(Fusarium oxysporum f.sp.phaseoli Kend & Syd)。此病在南宁于4月上中旬四季豆初花期开始发生,5月中下旬盛花至结荚期为发病高峰期。用滤纸碟法进行药效试验的结果,40%灭病威300—500倍液的抑菌圈最大,田间灌根防治也有一定效果。可用种子重量的0.5%多菌灵可湿性粉拌种。品种间抗病性有显著差异,秋抗19号和秋抗6号较抗病。
Fourteen samples of Fusarium oxysporum f. Sp. Strain collected from 11 wards in the suburbs of Nanning were confirmed by isolation, culture and pathogenicity test. The results showed that the pathogen was Fusarium oxysporum f.sp.phaseoli Kend & Syd ). The disease began in early April in mid-April in Nanning flowering early flowering stage, mid-to late May Shenghua to podding stage for the peak incidence. With filter paper plate method for the efficacy test results, 40% off Wei Wei 300-500 times the inhibition zone maximum inhibition of irrigation in the field also have some effect. Available seed weight 0.5% carbendazim wettable powder dressing. There was significant difference in disease resistance between varieties, Qiu-resistant 19 and Qiu-resistant 6 than the disease resistance.