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调查表明 ,固镇县烟草脉斑病发生流行与马铃薯等茄科作物及蔬菜和传毒介体蚜虫的大量存在有直接关系 ,烟田距马铃薯作物越近则发病越重 ,烟田距马铃薯作物 1 0 0m、2 5 0m、35 0m、5 0 0m的烟株发病率分别为 91 %、6 8%、2 7%、1 4% ;病情指数分别为46 .5、34 .0、1 0 .5和 6 .0。与品种、育苗方式、施肥水平、移栽期和茬口也有一定关系。
The survey shows that the prevalence of tobacco leaf spot disease in Guzhe County is directly related to the large number of solanaceous crops such as potato and aphids in vegetables and the transmission mediator. The closer the tobacco crop is to the potato crop, the heavier incidence is. The tobacco crop is away from the potato crop The incidence rates of tobacco plants of 1 0 0m, 250m, 35 0m and 500m were 91%, 68%, 27% and 14%, respectively. The disease indices were 46.5, 34.0, .5 and 6 .0. And varieties, nursery methods, fertilization levels, transplanting and stubble also have some relations.