烟草蚜传病毒病发生的主要因子及预测预报模型

MAIN FACTORS AND THE MODEL FOR FORECASTING OF TOBACCO VIRAL DISEASES TRANSMITTED BY APHIDS

试验结果表明,陕西烟田蚜传病毒病的介体和初侵染毒源均来自当地冬油菜田;蚜传病毒病的主要种类有CMV、TEV和PVY;有翅桃蚜迁入烟田有2个高峰期,第1高峰期出现在5月中旬,第2高峰期出现在6月中旬;各品种之间存在着不同的耐病性,其中MsB07、MsG02耐病;以陕西泾阳1994～1998年5年的烟草病情资料、当地气象资料和相关资料建立了烟田蚜传病毒病发病率(Y)预测预报模型:r=-6.909+0.011528 X_4+0.0026 X_5+0.001785 X_(12)+0.448X_(13)。

The winter rape was the most important primary virus and aphid vector source for tobacco in Shaanxi Province. The main species of tobacco aphid-transmitted virus were cucumber mosaic virus (CMV), tobacco etch virus (TEV) and potato virus Y (PVY) . There were two aphids migration peak to tobacco field, respectively in mid-May and June. The tobacco varieties MsB07 and Ms G02 have good tolerance to virus diseases. A forecasting model was established as the occurrence of the virus disease Y = -6.909 + 0.011528X4+ 0.0026X5 + 0.001785X12 + 0.448X13, using five-year data from Jingyang experimental station.