Effects of Nitrogen Application Amount during Various Periods on Yield of High Grade Hybrid Rapeseed

不同时期施氮量对甘蓝型优质杂交油菜产量的影响(英文)

[Objective] The paper was to study the nitrogen application amount and nitrogen application model for high grade hybrid rapeseed （Brassica napus L.） to get high yield. [Method] With ＂Youyan 599＂ and ＂Sanbei 98＂ as materials, using quadratic regression orthogonal gyration combination design, the impact of nitrogen application amount during various periods on rapeseed yield was studied. [Result] The combinations of factors to obtain the highest yield index （2 898.211 kg / hm 2 ） of ＂Youyan 599＂ were as follows： living rape fertilizer 89.27 kg / hm 2 , opening fertilizer 120 kg / hm 2 , 12 th lunar month fertilizer 101.12 kg / hm 2 , total nitrogen application amount 310.39 kg / hm 2 . The proportions of living rape fertilizer, opening fertilizer and 12th lunar month fertilizer were 28.76%, 38.66% and 32.58%, respectively. The combinations of factors to obtain the highest yield index （2 870.14 kg/hm 2 ） of ＂Sanbei 98＂ were as follows： living rape fertilizer 120 kg / hm 2 , opening fertilizer 120 kg / hm 2 , 12 th lunar month fertilizer 37.55kg / hm 2 , total nitrogen application amount 277.55 kg / hm 2 . The proportions of living rape fertilizer, opening fertilizer and 12 th lunar month fertilizer were 43.24%, 43.24% and 13.53%, respectively. The combinations of factors to obtain the highest yield index of two combined varieties （2 813.82 kg/hm 2 ）were as follows： living rape fertilizer 120 kg/hm 2 , opening fertilizer 120 kg/hm 2 , 12 th lunar month fertilizer 76.23 kg/hm 2 , total nitrogen application amount 316.23 kg/hm 2 . The proportions of living rape fertilizer, opening fertilizer and 12 th lunar month fertilizer were 37.95% , 37.95% and 24.11% , respectively. [Conclusion] The paper provided theoretical basis for high yield cultivation of high grade hybridized rapeseed.

[目的]研究甘蓝型优质杂交油菜获得高产的施氮量和氮肥运筹模式。[方法]以‘油研599’和‘三北98’为材料,采用三元二次通用正交旋转组合设计方法,对不同时期施氮量对油菜产量的影响进行研究。[结果‘]油研599’获得最高产量指标(2898.211kg/hm2)时的各个因素组合为活棵肥89.27kg/hm2,开盘肥120kg/hm2,腊肥101.12kg/hm2,施氮总量为310.39kg/hm2。活棵肥、开盘肥、腊肥所占比例分别为28.76%、38.66%、32.58%‘;三北98’获得最高产量指标(2870.14kg/hm2)时的各个因素组合为活棵肥120kg/hm2,开盘肥120kg/hm2,腊肥37.55kg/hm2,施氮总量为277.55kg/hm2,活棵肥、开盘肥、腊肥所占比例分别为43.24%、43.24%、13.53%。2个品种合并后获得最高产量指标(2813.82kg/hm2)时的各个因素组合为活棵肥120kg/hm2,开盘肥120kg/hm2,腊肥76.23kg/hm2,施氮总量为316.23kg/hm2,活棵肥、开盘肥、腊肥所占比例分别为37.95%、37.95%、24.11%。[结论]该研究为优质杂交油菜的高产栽培提供理论依据。