How to fertilize scientifically and reasonably?

Scientific and rational fertilization can affect the growth of crops, how to fertilize scientifically and reasonably?

Formulated fertilization must follow the combination of organic and inorganic, large, medium and trace elements, the combination of land and land, the principle of balance between input and output, and adopt scientific and rational fertilization measures. Linyi Fertilizer Network Copyright
Deep application of soil. If the application of nitrogen fertilizer is deep, it can effectively prevent nutrient loss and increase the utilization rate of nitrogen fertilizer. According to the test, the underground deep utilization rate of ammonium bicarbonate is 50%, the utilization rate of ground surface application is only about 28%; the utilization rate of urea underground deep application is between 35% and 50%, and the utilization rate of surface application is much lower. . Linyi Fertilizer Network Copyright
Change the blind fertilization to see the sky, see the land, and see the crops fertilized. “Looking at the sky” means watching whether climate factors such as temperature, humidity, rainfall, and light have any effect on the fertilizer. When the temperature is high, it is advisable to apply urea. When the temperature is low, it is better to apply ammonium bicarbonate. "Looking at the ground" is to fertilize the soil. For example, the clay soil has strong fertility, and the nitrogen can be used at a large amount; the sand loam soil has poor fertilizer-preserving ability, and the topdressing should be carried out according to the principle of “less eating and more meals”. “Looking at crops” is based on the demand for nutrients in different crops, finding out the factors that affect the yield in the soil and the peak demand for fertilizers in various crops, and formulating fertilization in combination with fertilizer characteristics. Linyi Fertilizer Network Copyright
The fertilizer was applied as a single application of NPK fertilizer. According to the fertilization performance of different soils, the fertilizer requirement of crops and the utilization rate of chemical fertilizers, the ratio of nitrogen, phosphorus and potassium fertilizers is reasonable. The two elements of nitrogen and phosphorus required for crop growth are most closely related and mutually reinforcing. Linyi Fertilizer Network Copyright
Organic fertilizer and chemical fertilizer are combined. The organic fertilizer has complete nutrients and long-lasting fertilizer; the fertilizer and fertilizer are single, but the content is high and the effect is quick. The combination of the two can complement each other and improve fertilizer efficiency. According to the test, the poultry circle fertilizer combined with ammonium bicarbonate, phosphorus superphosphate and potassium sulfate increased the yield by more than 10% compared with the single application of chemical fertilizer. Linyi Fertilizer Network Copyright
Concentrated application. For example, if the phosphate fertilizer has poor mobility in the soil, it is easy to be fixed by iron, aluminum and calcium in the soil and loses its fertilizer effect. Therefore, it should be applied to the root layer of the root system, so that the phosphorus is fixed around the seed and root system, which is beneficial to root absorption. Improve fertilizer utilization. Linyi Fertilizer Network Copyright
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