【正文】 .......... 6 土壤 pH 值 ................................................................ 6 土壤氮（ N）素營養(yǎng) ........................................................ 7 土壤磷（ P）素營養(yǎng) ........................................................ 9 土壤鉀 （ K） 素營養(yǎng) ........................................................ 11 與討論 .................................................................. 12 討論 .................................................................... 12 有機(jī)質(zhì)對植煙區(qū)影響 .................................................... 12 土壤 PH 值對植煙區(qū)影響 ................................................. 12 土壤氮素營養(yǎng)對煙草的影響 .............................................. 13 土壤磷素營養(yǎng)對煙草的影響 .............................................. 13 土壤鉀素營養(yǎng)對煙草的影響 .............................................. 13 結(jié)論 ...................................................................... 13 施肥建議 .............................................................. 13 因地制宜，合理調(diào)控氮肥用量 .......................................... 14 適量增施磷肥 ......................................................... 14 增施鉀肥，硫酸鉀與硝酸鉀配合施用 .................................... 14 培肥土壤，改進(jìn)施肥技術(shù) ................................................ 14 保護(hù)優(yōu)質(zhì)烤煙生產(chǎn)的土壤資源，建立土壤監(jiān)測點(diǎn) ............................ 14 3 參考文獻(xiàn) ....................................................................... 15 致謝 ........................................................................... 15 CONTENTS Abstract .................................................................................................................................................. 4 Key words............................................................................................................................................... 4 1 Preface ................................................................................................................................................. 5 2 materials and methods ......................................................................................................................... 5 the sample collection .................................................................................................................. 5 project and measuring method ................................................................................................... 5 analytical method ....................................................................................................................... 5 3 the results and analysis ........................................................................................................................ 6 soil anic matter ...................................................................................................................... 6 soil PH ........................................................................................................................................ 6 soil nitrogen ................................................................................................................................ 7 soil phosphorus ........................................................................................................................... 9 soil potassium ........................................................................................................................... 10 4 conclusion and discussion ................................................................................................................. 12 discussion ................................................................................................................................. 12 the influence of anic matter .............................................................................................. 12 the influence soil PH ............................................................................................................. 12 the influence soil nitrogen ..................................................................................................... 13 the influence soil phosphorus ................................................................................................ 13 the influence soil potassium ..............................