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通过玉米推荐施肥量的研究，旨在提出合理的施肥计划。试验结果表明，不同的目标产量均应有相应的氮、磷、钾化肥施用量。不同肥料的配合及不同施肥方式对玉米产量、化肥利用率和肥效都有直接的影响。产量顺序为ＮＰＫ有机肥＞ＮＰＫ＞ＮＰ＞ＮＫ＞Ｎ＞ＰＫ＞ＣＫ；深施ＮＰＫ有机肥＞深施ＮＰＫ＞常规施ＮＰＫ＞表施ＮＰＫ。玉米４００～５００ｋｇ／６６７ｍ２的施肥量为：纯Ｎ素９．０～１７．２ｋｇ，Ｐ２Ｏ５５．１～９．７ｋｇ，Ｋ２Ｏ６．０～１１．４ｋｇ或有机肥１０００ｋｇ，纯Ｎ素４．７～１３．０ｋｇ，Ｐ２Ｏ５２．７～７．３ｋｇ，Ｋ２Ｏ３．１～８．６ｋｇ。
Through corn recommended fertilizer research, aims to propose a reasonable fertilization plan. The test results show that different target yields should have corresponding nitrogen, phosphorus and potassium fertilizer application rates. Different fertilizers with different methods of fertilization and maize yield, fertilizer utilization and fertilizer efficiency have a direct impact. The order of NPK organic fertilizer> NPK> NP> NK> N> PK> CK; deep NPK fertilizer> NPK> NPK> NPK. The fertilization amount of 400 ~ 500kg / 667m2 for corn is 9.0 ~ 17.2kg of pure N, P2O55.1 ~ 9.7kg, K2O6.0 ~ 11.4kg or organic fertilizer of 1000kg, pure N is 4.7 ~ 13 .0kg, P2O52.7 ~ 7.3kg, K2O3.1 ~ 8.6kg.