寒地水稻品种龙盾104吸肥量及施肥技术研究

为探索寒地水稻品种龙盾104的吸肥量和施肥技术,以控灌灌排技术开展了不同施肥水平试验。结果表明:龙盾104的植株地上部分的全氮、全磷、全钾吸肥量分别在116.5～204.0、76.5～109.5、178.5～223.5 kg/hm2。植株地上部分吸收全氮、全磷、全钾的比例是2.0∶1.0∶2.3,每生产100 kg稻谷需要平均吸收全氮1.856 kg、全磷0.909 kg、全钾2.065 kg。在土壤肥力较高和合理施肥情况下,龙盾104在240 kg/hm2施肥水平条件下,可达到9 000 kg/hm2以上较高产量水平。

Study on Uptake and Fertilization Fechnique of Rice Variety Longdun104 in Cold Area

In order to study the uptake and fertilization fechnique of rice variety longdun104 in cold area,different fertilizer levels experiment was carried out based on controlled irrigation.By analyzing experiment data,the result showed that the fertilizer uptake of total nitrogen、total phosphorus、total potassium of above-ground plants of Longdun104 were among 116.5～204.0、76.5～109.5、178.5～223.5 kg/hm2 total nitrogen、total phosphorus、total potassium uptake proportion of above-ground plants were 2.0∶1.0∶2.3,total nitrogen、total phosphorus、total potassium uptake of per 100 kg rice production were 1.856、0.909、2.065 kg.In the condition of higher soil fertility and adequate fertilizer,the yield of longdun104 could reach above 9 000 kg/hm2 under the fertilizing amount of 240 kg/hm2.