First, the principle of fertilization:
In the whole growth period of corn, the absorption of pure n2.57kg, p2o50.86kg, k2o2.14kg, and the absorption ratio of nitrogen, phosphorus and potassium are 3:1:2.5 for every 100kg of grain.
According to the soil monitoring situation in recent years in our city, the soil organic matter content in our city is relatively high, the soil is rich in fertilizer and water retention capacity, and the corn production potential is almost above 500kg. It is necessary to achieve the target yield of 500-600kg, and apply organic per acre. Fertilizer 2000-3000 kg, urea 35-45kg, superphosphate 40-50kg, potassium chloride 15-25 kg, zinc sulfate 2-3 kg, borax 1-2 kg.
Second, the fertilization method:
Organic fertilizer, phosphorus and potassium fertilizer, zinc and boron fertilizer should be applied at the time of sowing or seedling. Nitrogen fertilizer should be applied in a proportion of 30-40% of seedling fertilizer (including seed fertilizer and seedling fertilizer) and 60-70% of panicle fertilizer (leaf age index 55-60%, that is, 11-12 pieces of whole leaf). Individual high-yield areas can quickly extract 20% of the nitrogen fertilizer from the panicle fertilizer and apply the attacking fertilizer after the corn tassel.
If corn fertilizer is used as the base fertilizer, if a certain nutrient is insufficient, supplement with simple fertilizer.
Maize is sensitive to potassium and zinc fertilizers. According to the survey: most of the grain fields in our city are deficient in potassium and zinc deficiency. Therefore, attention should be paid to the application of potassium fertilizer and zinc fertilizer. Conditional, it is best to carry out balanced fertilization of soil testing formula.
Third, note:
When applying fertilizer, it is necessary to plant and isolate the fertilizer to prevent burning.
In the whole growth period of corn, the absorption of pure n2.57kg, p2o50.86kg, k2o2.14kg, and the absorption ratio of nitrogen, phosphorus and potassium are 3:1:2.5 for every 100kg of grain.
According to the soil monitoring situation in recent years in our city, the soil organic matter content in our city is relatively high, the soil is rich in fertilizer and water retention capacity, and the corn production potential is almost above 500kg. It is necessary to achieve the target yield of 500-600kg, and apply organic per acre. Fertilizer 2000-3000 kg, urea 35-45kg, superphosphate 40-50kg, potassium chloride 15-25 kg, zinc sulfate 2-3 kg, borax 1-2 kg.
Second, the fertilization method:
Organic fertilizer, phosphorus and potassium fertilizer, zinc and boron fertilizer should be applied at the time of sowing or seedling. Nitrogen fertilizer should be applied in a proportion of 30-40% of seedling fertilizer (including seed fertilizer and seedling fertilizer) and 60-70% of panicle fertilizer (leaf age index 55-60%, that is, 11-12 pieces of whole leaf). Individual high-yield areas can quickly extract 20% of the nitrogen fertilizer from the panicle fertilizer and apply the attacking fertilizer after the corn tassel.
If corn fertilizer is used as the base fertilizer, if a certain nutrient is insufficient, supplement with simple fertilizer.
Maize is sensitive to potassium and zinc fertilizers. According to the survey: most of the grain fields in our city are deficient in potassium and zinc deficiency. Therefore, attention should be paid to the application of potassium fertilizer and zinc fertilizer. Conditional, it is best to carry out balanced fertilization of soil testing formula.
Third, note:
When applying fertilizer, it is necessary to plant and isolate the fertilizer to prevent burning.
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