氮磷钾肥配施对玉米产量的影响

以玉米品种吉单27为试材,针对目前农田施肥增产能力降低问题,进行了氮磷钾肥不同用量配比施用试验,旨在探索玉米氮、磷、钾养分施用最佳用量,为指导大田生产提供科学依据。结果表明：氮磷钾肥不同配比施用对玉米的产量和肥效有明显的影响。最佳施肥量为N 135kg.hm-2、P 75kg.hm-2、K 90kg.hm-2,N∶P2O5∶K2O=1.00∶0.56∶0.67。试验亦得出氮肥是决定玉米产量的主要因素,而钾肥、磷肥也是不可缺少的。所以科学施肥,合理搭配N、P、K肥不仅可以提高化肥利用率,同时也是玉米增产增收的保证。

Effect of Applying Nitrogen, Phosphorus, Potassium Together on the Yield of Maize

Taking maize variety of Jidan 27 as experimental material,aiming at the descending of fertilizer to yield increasing ability in farmland at present,the experiment of applying different ratios of nitrogen,phosphorus and potassium was conducted to explore the optimal application and provide scientific reference for production.The results showed that it had obvious effect on the yield of maize with different ratios of nitrogen phosphorus potassium.The optimum level was N 135 kg·hm-2,P2O5 75 kg·hm-2,K2O 90 kg·hm-2,N∶P2O5∶K2O=1.00∶0.56∶0.67.It also concluded that nitrogen was the key factor,but phosphorus and potassium were indispensable.So scientific fertilizer could promote fertilizer availability,but also guarantee the yield and income increasing.