期刊论文

中文

湖南农业科学

1006-060X

2016

10

45-48

10.16498/j.cnki.hnnykx.2016.010.014

国家烟草局重大专项（TS-01）； 湖南省烟草公司科技项目（11-14Aa01）； 长沙市烟草公司项目（12218,12231）；

本校为第一机构

以烤烟品种G80为材料，在浏阳烟区研究了施肥量与种植密度对烤烟农艺性状和经济性状的耦合效应。结果表明：烤烟全生育期因施氮量增加而延长5~7 d，随密度增加而略有缩短3~4 d，即低氮高密处理全生育期最短；烤烟农艺性状因施氮量增大与密度降低而有所改善；试验条件下，以施氮量180 kg/hm2和密度16500~18000株/hm2的耦合效应最佳，产量分别为2383.5与2364.0 kg/hm2，增产12.9%~52.3%与12.0%~51.0%；产值分别为63043.5与62622.3元/hm2，增值11.7%~53.7%与10.9%~52.7%。

With flue-cured tobacco variety G80 as material, the coupling effects of nitrogen application rate and planting density on agronomic and economic characters of flue-cured tobacco in Liuyang tobacco area was studied. The results showed that the whole growth duration of flue-cured tobacco was prolonged 5-7days by increment of N rate and shortened 3-4 days by increment of density, that was to say, the whole growth duration in low N and high density treatment was the shortest. The agronomic characters of flue-cured tobacco were improved due to the increase of nitrogen application rate and the decr...