Corn "steady increase control supplement" four-character formula
Stable application of nitrogen fertilizer in high-yield fields with a yield of more than 500 kg, the nitrogen application per acre should be stabilized at 9-12 kg; for medium-production fields with a yield of 300-500 kg, the nitrogen application per acre should be stabilized at 7-10 kg. For low-yield fields with a yield of less than 300 kg, nitrogen application per mu should be stabilized at 6 to 8 kg. At the same time, rationally adjust the application period and method to improve the effect of nitrogen fertilizer utilization.
Increasing the application of potassium fertilizer As the available potassium in the soil decreases year by year, the area of ​​potassium deficiency continues to expand. In order to meet the needs of potassium for corn growth, it is necessary to increase the application of potassium fertilizer in an all-round way. The suitable potassium fertilizer application rate in high-yield fields is about 8 kg per mu, about 7 kg in middle-yield fields, and about 6 kg in low-yield fields. The application ratio of nitrogen, phosphorus, and potassium should be 1:0.5:0.6.
Controlled application of phosphate fertilizer In the fields of high, middle and low yield, the appropriate amount of phosphorus applied per acre should be controlled within the range of 7 kg, 6 kg and 5 kg, respectively. Spring corn phosphate fertilizer is generally applied as a base fertilizer, and summer corn can be applied with nitrogen fertilizer. Application of phosphate fertilizer should emphasize deep application and early application.
The supplement of micro-fertilizers can spray special foliar fertilizers for corn in the corn seedling stage to comprehensively supplement various trace elements, especially zinc, to promote the healthy growth of crops and root development, so as to achieve the purpose of increasing production and income.
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