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皖北砂姜黑土烟区土壤有机质含量适宜 ,水解氮、速效磷含量较高 ,速效钾含量偏低。肥料试验结果表明 :烤烟适宜的施氮量为 75 kg/hm2 ,N∶ P2 O5 ∶ K2 O以 1∶ 1.2∶ 3为宜
The soil organic matter content in the smoky lime soil in North Anhui Province was suitable, with higher contents of hydrolyzed nitrogen, available phosphorus and lower available potassium. Fertilizer test results show that: suitable nitrogen application rate for flue-cured tobacco is 75 kg / hm2, N: P2 O5: K2 O is 1: 1.2: 3