2015年夏玉米氮磷钾肥利用率试验研究

Study on Utilization Rate of Nitrogen,Phosphorus and Potassium in Summer Maize in 2015

进行夏玉米氮磷钾肥利用率试验,结果表明:较之缺素处理,氮磷钾处理的产量明显升高,缺氮处理的产量居末位,养分元素对玉米产量的影响力由高到低的顺序为氮、磷、钾;而氮磷钾配合施用增产效果最佳,且配方施肥比常规施肥增产6.27%。就氮、磷、钾肥利用率而言,其在配方施肥、常规施肥中的数值分别为27.8%、30.0%、30.2%,25.4%、10.3%、13.5%。

The summer maize nitrogen, phosphorus and potassium utilization tests were made. The results showed that compared with the nutrient deficiency treatments,the yields of N,P and K treatments significantly increased,yields of nitrogen deficiency ranked the bottom,the influence of nutrient elements on maize yields from high to low in order for nitrogen, phosphorus and potassium;and with the nitrogen, phosphorus and potassium increase effect of the application was the best,and formula fertilization than conventional fertilization increased by 6.27%. In terms of nitrogen, phosphorus and potassium fertilizer use efficiency, the numerical value of the formula fertilization and conventional fertilization were 27.8%, 30.0%, 30.2%, 25.4%, 10.3%, 13.5%, respectively.