植物源农药防治烟草花叶病试验

Effects of Plant Pestcide on Control of Tobacco Mosaic Disease

为探寻防治烟草花叶病的理想药剂 ,经大量试验筛选 ,利用商陆、甘草、连翘等几种植物抽提物配制而成的复配剂 MH1 1 - 4,对由 Tobacco mosaic virus(TMV)和 Cucumber masaic virus(CMV)引起的烟草花叶病进行了室内和田间小区防治试验 .室内盆栽试验结果表明 ,MH 1 1 - 42 0 0倍液对 TMV和 CMV的病株抑制率分别为 6 1 .9%和5 6 .9% ,体外钝化效果分别为 86 .0 2 %和 98.80 % ,防治效果分别为 74.7%和 70 .3% ;田间小区试验表明 ,MH1 1 - 42 0 0 ,30 0倍液的平均防效分别为 88.4% ,86 .5 %

MH11 4,a plant pestcide made from extractive from phytolacca,liquorice and forsythia,showed not only strong effects on the inhibition of tobacco affected by TMV and CMV(61.9% and 56.9% respectively) and on the inactivation of TMV and CMV in vitro(86.02% and 98.80% respectively),but also great effects on control of tobacco mosaic diseases caused by TMV and CMV in greenhouse(74.7% and 70.3% respectively).Field tests showed that MH11 4 200 and MH11 4 300 had an average control of 88.4% and 86.5% respectively on tobacco mosaic disease.