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采集烟区9种主要类型的土壤,连续进行4次烟草盆栽试验.结果表明,烟草总吸钾量与缓效钾量相关极显著(r=0.985~(**)n=9),为烟草的主要钾源.与EUF-K_(0-35)相关极显著(r=0.872~(**) n=9),是评定烟区土壤钾素供应状况的理想指标.从供钾强度、容量及缓冲容量综合考虑,本区供钾能力以淋溶褐土潮褐土、普通褐土、普通棕壤较好,其它几种壤则较差.为了提高烟草的品质,均应考虑施用化学钾肥.
Nine main types of soils were collected and four successive tobacco pot experiments were conducted.The results showed that the total amount of potassium absorbed was significantly correlated with the amount of slow-acting potassium (r = 0.985 ** ** n = 9) (R = 0.872 ** ** n = 9), which is the main source of potassium for EUF-K_ (0-35), is an ideal indicator for assessing the availability of potassium in tobacco soil.From the perspectives of potassium supply, And buffering capacity, the potassium supply capacity in this area is leaching brown cinnamon soil, ordinary cinnamon soil, common brown soil is better, while the others are poor. In order to improve the quality of tobacco, we should consider the application of chemical potassium fertilizer .