烟田实行正确的轮作制度,可以培养地力.改善土壤结构,促进土壤良性循环,减少和预防烤烟病害。烤烟与禾本科作物轮作最好,其次为豆科作物,再次为芝麻。因为这些作物很少和烤烟有共同病害,并且,这些作物对土壤中的氮素吸收较多,对钾肥吸收较少,对提高烤烟质量有利。容易传染烤烟病害的蔬菜作物,尤其是茄科类(番茄、茄子、辣椒、马铃薯等)蔬菜不宜与烤烟轮作。烤烟田的轮作,一般要隔两年以上,实行四年轮作制度,不能重茬、乱茬,否则,容易发生毁灭性的病害。我省烤烟有水田种植和旱地种植两种。水田种植多采用“五年两头种烟”,轮作方式为:烤烟—晚稻—绿肥(油 Tobacco fields to implement the correct rotation system, can cultivate fertility, improve soil structure, promote soil virtuous circle, reduce and prevent flue-cured tobacco disease. Flue-cured tobacco and grasses crop rotation best, followed by leguminous crops, once again for sesame seeds. Because these crops rarely have common diseases with flue-cured tobacco, and these crops on the soil more nitrogen absorption, less absorption of potassium, to improve the quality of flue-cured tobacco. Vegetable crops that are easily infected with flue-cured tobacco diseases, especially solanaceae (tomatoes, eggplants, peppers, potatoes, etc.) Vegetables should not be mixed with flue-cured tobacco. The rotation of flue-cured tobacco fields generally takes more than two years. A four-year crop rotation system can not be adopted. Therefore, it is not possible to re-crop or chaos stubble, otherwise it is prone to devastating diseases. Flue-cured tobacco in our province there are two kinds of paddy fields and dry land cultivation. Paddy field planting more use of “five years of two kinds of tobacco”, rotation mode: flue-cured tobacco - late rice - green manure (oil