Corn "stabilizes and controls" four words
Stable application of nitrogen fertilizer in high-yield fields with yields of more than 500 kilograms per unit, nitrogen application rate per acre should be stable at 9 to 12 kilograms; for medium yield fields with a unit yield of 300 to 500 kilograms, nitrogen application per acre should be stabilized at 7 to 10 kilograms. For low-yielding fields with a yield of less than 300 kilograms, the nitrogen applied per acre should be stabilized at 6-8 kilograms. At the same time, reasonable adjustment of the application period and methods to improve the use of nitrogen fertilizer. With the increase of potash fertilizer, the available potassium is decreasing year by year, and the area of ​​potassium deficiency is continuously expanding. In order to meet the demand of corn for the growth of potassium, potassium fertilizer must be applied in an all-round way. The suitable amount of potash fertilizer in high-yielding fields is about 8 kg per mu, the middle production field is about 7 kg, and low-yielding fields are about 6 kg, and the ratio of nitrogen, phosphorus, and potassium should be 1:0.5:0.6. Controlled application of phosphate fertilizer in high-yield and low-yield fields, the appropriate amount of phosphorus per acre should be controlled within the range of 7 kg, 6 kg and 5 kg respectively. Spring corn phosphorus fertilizer is generally used as base fertilizer, and summer corn can be applied with nitrogen fertilizer. Phosphate fertilizer application should emphasize deep application and early application. The supplemental trace fertilizer can be used to spray maize special foliar fertilizers at the seedling stage of maize to fully supplement various trace elements, especially zinc, to promote the healthy growth of the crop and the development of the root system, so as to achieve the purpose of increasing production and income. Longtail tuna,long tail tuna eating quality,longtail tuna eating quality Zhoushan Boda Aquatic Products Co.,Ltd , https://www.baida-aquatic.com