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为探明豌豆生产中氮磷钾肥最优化施肥参数,采用“3414”不完全正交回归设计肥料效应试验方案,利用沙培基质盆栽试验对豌豆品种科豌6号的氮磷钾肥料效应进行了研究,明确了豌豆对氮磷钾的真实需求量,并筛选适宜的肥料配方。结果表明:适宜氮磷钾肥用量及其配施能显著改善豌豆的经济性状,提高豌豆产量。氮和钾是限制豌豆产量的主要养分因子,施氮钾的增产效果明显,其次是磷。通过建立肥料与产量效应函数方程并结合经济效益分析得出,豌豆的最高产量施肥量为N 160.35kg/hm~2、P_2O_5 124.35kg/hm~2、K_2O 57.45kg/hm~2,最大效益施肥量为N 169.95kg/hm~2、P_2O_5 4.50kg/hm~2、K_2O 21.15kg/hm~2。因此,科豌6号施肥时要重施氮肥,适配磷钾肥。
In order to find out the optimum fertilization parameters of NPK fertilizers in pea production, we designed the experiment of fertilizer effect by using “3414” incomplete orthogonal regression. A study was carried out to clarify the actual demand of peas for NPK and to screen suitable fertilizer formulas. The results showed that suitable NPK fertilizers and their combination could significantly improve economic traits of pea and increase pea yield. Nitrogen and potassium are the main nutrient factors that limit the yield of pea. The effect of nitrogen and potassium fertilization is obvious, followed by phosphorus. Through the establishment of fertilizer and yield function equation and economic analysis, the highest yield of peas was N 160.35kg / hm ~ 2, P_2O_5 124.35kg / hm ~ 2 and K_2O 57.45kg / hm ~ 2. The amount of N 169.95kg / hm ~ 2, P 2 O 5 4.50kg / hm ~ 2, K_2O 21.15kg / hm ~ 2. Therefore, the Pei-6 fertilizer to re-application of nitrogen fertilizer, phosphorus and potassium fertilizer.