腰烂病和低头黑是严重为害烟草的病害,也传染别的茄科植物,如马铃薯、茄子、辣椒等。山东滕县专区虽然栽烟年限并不太久,也发生不少,一年的损失平均在百分之十五左右,个别严重户竟达百分之百。根据山东省一九五一年,不完整的调查,发病率占总植烟面积万分之二十以上,减产甚巨。为了提高单位面积产量,争取烟草的普遍丰收,首先要消灭这二 Loin rot and bow black is a serious disease of tobacco damage, but also transmitted to other Solanaceous plants, such as potatoes, eggplant, peppers and so on. Shandong Tengxian area, although not too long ago, also occurred a lot, one year’s loss averaged about 15%, as few as 100% of serious cases. According to an incomplete survey conducted in 1951 in Shandong Province, the incidence rate accounted for more than 20% of the total area planted with smoke, yielding huge losses. In order to increase the yield per unit area for the general good harvest of tobacco, we must first eliminate these two