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2006年采用正交试验方法,在连州市主要土壤类型烟田进行不同氮、磷、钾配比试验,结果表明每667m2烤烟的适宜施肥量紫色土旱地为N6 kg、P 6～7 kg、K 12.5 kg,牛肝土水田为N9 kg、P8 kg、K12.5 kg。
In 2006, orthogonal experiment was used to test the ratio of N, P and K in main soil types in Lianzhou. The results showed that the suitable fertilization amount of purple soil for each 667m2 flue-cured tobacco was N6 kg, P6 ~ 7 kg, K 12.5 kg, bovine liver paddy soil N9 kg, P8 kg, K12.5 kg.