论文部分内容阅读
用４０μｇ／Ｌ的ＣＴ，ＥＫ，ＥＨ，ＰＡＰ和ＭＡＰ在体外钝化ＣＭＶ１ｈ后接种，枯斑数依次降低达１５．２％，８８．５％，６４％，２８．１％和６１．６％．在接种ＣＭＶ前２４ｈ喷施８０μｇ／Ｌ的ＣＴ，ＥＫ和ＥＨ，预防效果依次为９２．４％，９０％和８２％，将浓度提高到１００μｇ／Ｌ时３种药剂能完全抵抗ＴＭＶ的摩擦接种和ＣＭＶ的３头蚜虫接种。接种ＣＭＶ２４ｈ后分别喷施８０μｇ／Ｌ的ＣＴ，ＥＫ和ＥＨ，病情指数依次为０．０９，０．２９和０．１１；若间隔喷施２次则能使９３．２％，８９．６％和７４．１％的病株恢复正常。
Inoculation with 40 μg / L CT, EK, EH, PAP and MAP after in vitro passivating CMV for 1 h reduced the number of spots by 15.2%, 88.5%, 64%, 28.1% and 61.6% . The preventive effect of CT, EK and EH at the dose of 80μg / L was 92.4%, 90% and 82% respectively 24h before CMV inoculation. When the concentration was raised to 100μg / L, the three agents could completely resist the frictional inoculation of TMV And 3 aphids of CMV. After inoculated with CMV for 24 h, CT, EK and EH of 80 μg / L were sprayed respectively, and the disease index was 0.09, 0.29 and 0.11, respectively. Spraying twice for 93.7%, 89.6% And 74.1% of the diseased strains returned to normal.