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在田间试验条件下研究了施肥对“秦油二号”杂交油菜氮、磷、钾营养及其产量的影响,结果表明:单施氮肥,增加植株氮、磷、钾吸收强度和植株含氮浓度,但对植株磷、钾浓度无明显影响。氮磷配施既能显著提高植株氮、磷、钾吸收强度,也能增加植株氮、磷、钾浓度。在施用氮、磷肥料基础上配施氯化钾肥,降低了植株氮、磷吸收强度和氮浓度。施肥使油菜氮,磷营养吸收高峰推迟。吸氮高峰期在油菜苔期,吸磷高峰期在油菜花角期。在本试验条件下,氮肥与磷肥配合施用油菜产量和经济效益最高,比单施氮肥增产23.2％,比氮磷钾配施增产11.4％,每亩增收三十无以上。
The effects of fertilization on nitrogen, phosphorus and potassium nutrition and yield of Qinyou No.2 hybrid rape were studied in the field experiment. The results showed that nitrogen application could increase the absorption of nitrogen, phosphorus and potassium and plant nitrogen concentration , But no significant effect on plant phosphorus and potassium concentration. The combination of nitrogen and phosphorus can not only significantly increase the absorption intensity of nitrogen, phosphorus and potassium, but also increase the concentration of nitrogen, phosphorus and potassium in the plant. In the application of nitrogen and phosphorus fertilizers based on the application of potassium chloride fertilizer, reducing plant nitrogen and phosphorus absorption and nitrogen concentration. Fertilization to rape nitrogen and phosphorus postponed the peak of nutrient absorption. Nitrogen uptake peak in the rapeseed period, peak phosphorus uptake period in the rape. Under the experimental conditions, the yield and economic benefit of the combination of nitrogen fertilizer and phosphate fertilizer were the highest, which increased by 23.2% compared with the single nitrogenous fertilizer and increased by 11.4% than the combined NPK.