Abstract: A maize cultivar, Jinshan 27, was used as the test material to study the effects of different potassium levels (K₂O 0, 150, 300 kg/ha) and application methods (All the base fertilizer and postponing potassium application) on potassium absorption, accumulation and translocation in high-yield spring maize.The results showed that the potassium content and accumulation in plant of postponing potassium application were lower than all the base fertilizer, and more notable more postponing potassium, and its different was remarkable at early-growth.Except form germination to jointing stage, absorption amount of potassium each growth stage of postponing potassium application were lower than all the base fertilizer, and more notable more postponing potassium, and it was significant differences from jointing to large bell stage.Potassium absorption percentage of postponing potassium application were lower than all the base fertilizer from jointing to large bell stage, and it was contrary from large bell to silking stage.Potassium absorption amount and contribution rate to grain of postponing potassium application before silking and after silking were lower than all the base fertilizer, and more notable more postponing potassium, the different of potassium absorption amount were remarkable at silking, the different of contribution rate to grain were notable at before silking.Amount of translocation and translocation rate of leaf of postponing potassium application were not significant differences, and which of stalk were lower than all the base ferti lizer, and more significant more postponing potassium.

Key words: Spring maize, Fertilizer methods, Potassium, Accumulation, Translocation

CLC Number: 

• S315