【摘要】 以晋油12号为材料,初步探讨氮肥和密度互作对晋北丘陵旱坡地芥菜型春油菜农艺性状和产量的影响。结果表明,肥料与密度互作对春油菜千粒质量有极显著影响;密度对油菜茎粗、分枝数、产量、千粒质量有显著影响;施氮量对油菜株高和千粒质量有显著影响。氮肥和种植密度适度增加能提高油菜产量,且种植密度为55.5万株/hm2,施氮肥150~225 kg/hm~2效果较好。更多还原

【Abstract】 The effects of nitrogen application on the yield of mustard-type spring rape in the hilly sloping fields in northern Shanxi were studied at different densities. The results showed that the density had a significant effect on the yield of rapeseed. The yield differed significantly between fertilization and no-fertilization. The interaction between fertilizer and density had a significant effect on 1 000 grain quality of spring rape. Density had a significant effect on rape stem diameter, branching, yield and 1 000 grain quality. Nitrogen application rate had significant effect on plant height and 1 000 grain quality. The moderate increase of nitrogen and planting density can increase the yield of rape, and when the planting density is 555 thousand/hm~2, and the nitrogen application rate is 150-225 kg/hm~2, the effect is the better.更多还原