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为了摸清玉米的氮肥、磷肥和钾肥的利用率情况,为测土配方施肥,提高氮肥、磷肥和钾肥利用率的效果提供依据,特进行了多地点的田间氮肥、磷肥和钾肥及缺失对玉米产量影响的对比试验。结果表明,肥料元素缺失对产量影响较大,缺N区产量最低,其次为缺K、P区;说明玉米产量受N、P、K肥缺失影响明显,N肥缺失影响比P、K肥大一些;从肥料利用率结果可知,常规施肥的肥料利用率为N28.57%;P24.2%;K42.64%;配方施肥的肥料利用率为N36.51%;P24.65%;K52.46%,利用率效果分别提高7.94%、0.45%、9.82%。可见,配方施肥可有效提高玉米产量,不仅产值高,而且节省成本。
In order to find out the utilization of maize nitrogen fertilizer, phosphate fertilizer and potassium fertilizer, provide the basis for the effect of soil testing and formula fertilization, and improve the utilization rate of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer, especially conducted multi-site field nitrogen, phosphate and potassium fertilizer and corn Yield contrast test. The results showed that the lack of fertilizers had a great effect on the yield, but the yield in the deficient N was the lowest, followed by the lack of K and P, indicating that the yield of maize was significantly affected by the loss of N, P and K fertilizers. ; From the results of fertilizer utilization, it can be seen that the fertilizer utilization efficiency of conventional fertilization is N28.57%; P24.2%; K42.64%; fertilizer utilization rate of formula fertilization is N36.51%; P24.65%; K52.46 %, Utilization efficiency increased by 7.94%, 0.45%, 9.82%. Can be seen that formula fertilization can effectively improve corn production, not only high output value, but also save costs.