CAJ | 학술논문

为给合理施用化肥、降低化肥用量提供依据，以 K326和红花大金元为研究材料，在当地推荐用量的基础上进行了纯氮减施试验研究．结果表明：1）与主要经济性状有关的指标是在目前推荐 N 肥用量的基础上减施10％～20％，可以获得较好的经济效益．2）与生长发育有关的几项指标则表现为：（a）纯氮减施10％～30％对烤烟根系和茎秆发育的影响与品种有关，对 K326有较大影响，表现为根系和茎秆鲜质量明显下降，且对前者的影响更明显，但对红花大金元影响不明显；（b）纯氮减施10％～30％对叶片发育的影响较大，其中 K326以推荐 N 肥用量的叶片生长发育最好，而红大则是以减施20％的发育最好；（c）纯氮减施10％～30％对烤烟叶绿素的影响与品种有关，对 K326的影响表现为依次下降的规律明显，而红大则表现为减施10％～20％叶绿素含量增加，减施到30％才显著下降；（d）纯氮减施10％～20％对烤烟主要生育期的影响较小，但减少到30％则会明显推迟红花大金元的现蕾开花时间．
위급합리시용화비、강저화비용량제공의거，이 K326화홍화대금원위연구재료，재당지추천용량적기출상진행료순담감시시험연구．결과표명：1）여주요경제성상유관적지표시재목전추천 N 비용량적기출상감시10％～20％，가이획득교호적경제효익．2）여생장발육유관적궤항지표칙표현위：（a）순담감시10％～30％대고연근계화경간발육적영향여품충유관，대 K326유교대영향，표현위근계화경간선질량명현하강，차대전자적영향경명현，단대홍화대금원영향불명현；（b）순담감시10％～30％대협편발육적영향교대，기중 K326이추천 N 비용량적협편생장발육최호，이홍대칙시이감시20％적발육최호；（c）순담감시10％～30％대고연협록소적영향여품충유관，대 K326적영향표현위의차하강적규률명현，이홍대칙표현위감시10％～20％협록소함량증가，감시도30％재현저하강；（d）순담감시10％～20％대고연주요생육기적영향교소，단감소도30％칙회명현추지홍화대금원적현뢰개화시간．
To provide a basis for reasonable usage of chemical fertilizer and reduce its dosage,two tobacco varieties K326 and Honghuadajinyuan(HD)were used as test material,and a field trial of pure nitrogen reduction was carried out based on the local recommend dosage.The results indicate that 10% to 20% reduction of pure nitrogen could achieve a better economic benefit.Several indexes of growth and development indicate that (a)the affect of 10% to 30% pure nitrogen reduction on the development of roots and stem of flue-cured tobacco is variety-related.It has a great affect on K326,which showed the quality of the roots and fresh stem weight obviously decreased,and the former reduced more significantly.But it has no obviously affect on HD.(b)The affect of 10% to 30%pure nitrogen reduction on leaves development is great:the growth and development of K326 is best at the local recommend dosage;the growth and development of HD is best when pure nitrogen reduced 20%.(c)The affect of 10% to 30% pure nitrogen reduction on the chlorophyll content of flue-cured tobacco is variety-related:the chlorophyll content of K326 obviously decreased along with the reducing amount of chemical fertilizer;the chlorophyll content of HD increased when the pure nitrogen reduced 10 to 20 percent,but decreased significantly when the pure nitrogen reduced 30 percent.(d)10% to 20% of pure nitrogen reduction has no obviously affect on the main growth periods of flue-cured tobacco,but HD delayed obviously in budding when pure nitrogen reduced 30 percent.