What fertilizer do you need to grow corn?

From/0/0 day before heading to 25-30 days after heading, maize was in the stage of rapid accumulation of substances and high fertilizer absorption, absorbing 70-75% nitrogen, 60-70% phosphorus and 65% potassium.

Corn plants contain 16 elements, which should be absorbed from the soil except for C. Among them, nitrogen, phosphorus, potassium, sulfur, calcium and magnesium are in great demand, while iron, manganese, zinc, copper and barium are in small demand.

The demand for nutrients in the whole growth cycle of maize is nitrogen, followed by potassium and phosphorus, and a proper amount of mineral elements is needed. The ratio of nitrogen, phosphorus and potassium is 1:0.49:0.9, and the yield is good and high.

Extended data:

Matters needing attention in corn fertilization:

1, the principle of paying equal attention to organic fertilizer and chemical fertilizer, applying base fertilizer before, applying phosphorus and potassium fertilizer early and topdressing by stages is adopted. Applying organic fertilizer can not only provide nutrients continuously, but also improve soil quality. About 2 tons of fully decomposed livestock manure organic fertilizer can be applied per mu.

2. It is recommended to apply an appropriate amount (about 65438±00kg) of diammonium phosphate or compound fertilizer as seed fertilizer. When applying fertilizer, attention should be paid to the isolation and safety of seed fertilizer, and it should be applied horizontally (5 cm) deeply, preferably in layers.

3. The application period of fertilizer should be reasonable. Because of the long growth period of spring corn, if the fertilization method of "one bombardment" or "heavy before light" (a large amount of base fertilizer and a small amount of topdressing) is adopted, it will easily lead to premature aging in the early stage. It is suggested that topdressing should be done once at jointing stage or big bell mouth stage, and the topdressing should be mainly available nitrogen fertilizer. At the same time, we should pay attention to make good use of natural rainfall in time, and it is best to cover the soil in time after fertilization to improve fertilizer efficiency.

4. Trace elements make up for lack. According to the law of corn fertilizer demand and soil nutrients, the principle of supplementing it is adopted. Part of the land in corn planting area may be short of zinc or boron, so it is suggested to supplement it appropriately.

Fertilization Technology of Baidu Encyclopedia-journal of maize sciences Magazine

Baidu encyclopedia-corn fertilization