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本文通过对向日葵进行不同氮磷钾肥料量级的田间试验,研究分析氮肥、磷肥、钾肥对向日葵产量的影响,从而确定氮、磷、钾肥的合理的用量。试验结果表明:本试验条件下,向日葵的产量与氮磷钾肥的用量有良好的相关性,由氮效应一元二次方程的拟合得出,最佳推荐氮肥用量为9.000kg/667m2;对磷肥效应的线性加平台分析,推荐的最佳施磷量为4.000kg/667m2;钾肥效应的线性加平台分析,推荐的最佳施钾量为3.000kg/667m2;推荐施肥与传统施肥相比可增加利润429.7元/667m2。从氮磷钾肥料对向日葵产量和效益2项指标看,以施氮、确凿、钾肥料分别为9.000、4.000、3.000kg/667m2的产量最佳。
In this paper, different levels of nitrogen, phosphorus and potassium fertilizers on sunflower field trials to study the impact of nitrogen, phosphorus and potassium on the yield of sunflowers to determine the rational use of nitrogen, phosphorus and potassium fertilizer. The results showed that under the experimental conditions, the yield of sunflower had a good correlation with the amount of NPK fertilizers, and the best nitrogen fertilizer dosage was 9.000kg / 667m2 by fitting the quadratic equation of nitrogen effect. The linear regression analysis of the effect and the recommended optimum phosphorus application rate is 4.000kg / 667m2. The recommended potassium application efficiency is 3.000kg / 667m2 by linear plus platform analysis. The recommended fertilization can be increased compared with the traditional fertilization Profit 429.7 yuan / 667m2. Nitrogen, phosphorus and potassium fertilizer on the yield and benefits of sunflower two indicators to nitrogen, conclusive, potash fertilizer were 9.000,4.000,3.000kg / 667m2 yield the best.