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对芋病毒病及类似病害症状进行调查,其症状表现主要分为羽状花叶、叶片向上卷曲并伴有黄化或花叶、脉间黄化、明亮褪绿黄斑、褪绿斑点(斑驳)及叶片皱缩和叶缘黄化。采用RT-PCR和PCR技术对随机采集的32份表现症状的鄂芋一号样品进行了芋花叶病毒(DsMV)和芋杆状病毒(TaBV)2种病毒的检测,检出率均为68.8%。同时,利用30%毒氟磷可湿性粉剂500倍液和1 000倍液对芋病毒病进行田间药效试验,第一次施药后10 d调查,毒氟磷可湿性粉剂500倍液和1 000倍液的防治效果分别为30.9%和24.9%;第二次施药后15 d调查,500倍液和1 000倍液防治效果分别为72.8%和59.4%。田间药剂试验结果表明,毒氟磷可湿性粉剂500倍液比1 000倍的防治效果好,从田间芋头长势可看出,毒氟磷对芋头生长有明显的促进作用。
Symptoms of the disease and similar disease symptoms were investigated, the symptoms are mainly divided into feathery leaves, leaves curled up and accompanied by yellowing or mosaic, meiosis, bright chlorotic yellow spots, chlorotic spots (mottled) And leaf shrinkage and leaf margin yellowing. The RT-PCR and PCR techniques were used to detect 32 randomly selected samples of E-1 which had two symptoms of taro virus (DsMV) and taro-like virus (TaBV). The detection rates were 68.8 %. In the meantime, the field efficacy test of taro virus disease was carried out with 500 times of 30% toxic fluticasone wettable powder and 1000 times of liquid. After 10 days of the first pesticide application, The control effect of 000 times liquid was 30.9% and 24.9% respectively. After 15 days of the second application, the control efficacy of 500 times and 1000 times liquid were respectively 72.8% and 59.4%. The results of field trials showed that the control efficacy of 500 times of toxic fluorine WP was higher than that of 1000 times. From the growth of taro in the field, it was found that the toxic fluorine could obviously promote the growth of taro.