摘要
研究表明，在皖北地区，采用一次性单行条施全部氮肥易导致在旺长前地上部分生长过旺、下部叶前后半片厚度差异明显，肥料淋溶损失大、肥效降低，烟田明显无后劲。同时在干旱气候条件下移栽根系受肥料灼伤的风险。采用单株定量侧穴施肥、基施和追施相结合，因肥料局部集中且烤烟生长前期降水不足导致烟株早期生长缓慢，肥效明显向延迟。采用基施（NH4－N）和追施（NO_3－N）相结合基肥为单株定量环穴施肥，与剪叶育苗技术、“旱地培土”技术相配套，则很好地克服了前两者的缺点，且提高了烟叶品质和肥料的利用率。因而是皖北烟区目前最适宜的施肥方法。
篢he latter period fertilizer was supplied in Wanbei tobacco area with one, single row nitrogen fertilizer．It could improve quality of tobacco leave and utility of fertilizer that a tobacco strain was fertilized by certain quality，round dibbing manue which comined base manue （NH_4-N） and application （NO_3-N），which reveled best method of fertilization in Wanbei tobacco area．
