What methods are there to improve fertilizer use efficiency?
How can fertilizer use efficiency be improved? Please explain the methods. To improve fertilizer use efficiency when applying chemical fertilizers, you can refer to the following methods: according to the yield target, carry out balanced fertilization. Within a certain fertilization range, crop yield and fertilizer application rate are positively correlated. Excessively increasing the total amount of fertilizer or the amount of a single nutrient, because...
How can fertilizer use efficiency be improved? Please explain the methods
When applying chemical fertilizers, you can refer to the following methods to improve fertilizer use efficiency:
According to the yield target, carry out balanced fertilization. Within a certain fertilization range, crop yield and fertilizer application rate are positively correlated. Excessively increasing the total amount of fertilizer or the amount of a single nutrient will cause the nutrient environment to lose its ecological balance and may instead lead to reduced yield. Therefore, it cannot be said that the more fertilizer applied, the higher the yield will be. According to measurements, for every 100 kg of rice grain produced, 1.85 kg of nitrogen, 0.85 kg of phosphorus pentoxide, and 2.1 kg of potassium oxide need to be absorbed from the soil. For every 100 kg of ginned cotton produced, 12.0 kg of nitrogen, 4.0 kg of phosphorus pentoxide, and 12.0 kg of potassium oxide need to be absorbed. Of course, when determining the fertilization rate, factors such as climate, soil, and fertility must also be considered.
Persist with deep fertilization and use water to regulate fertilizer. In production, chemical fertilizers should be applied deeply so that the soil covers and protects the fertilizer, reducing volatilization and loss. When soil moisture is insufficient, irrigate appropriately to regulate soil moisture, so as to use water to regulate fertilizer.
Mix in organic fertilizer to enhance adsorption capacity. After chemical fertilizer is mixed with organic fertilizer, the quick-acting nutrients in it can be adsorbed or bound by the organic fertilizer and then gradually released, which both prolongs the fertilizer supply period and reduces unnecessary consumption of nutrients.
Improve fertilizer formulations and regulate the peak of fertilizer supply. First, make single-variety fertilizers into broad-spectrum compound fertilizers; second, make special-purpose fertilizers according to the fertilizer requirements of crops; third, use modification methods to make quick-release fertilizers into slow-release fertilizers; fourth, make inorganic fertilizers and bio-organic fertilizers into granular fertilizers with complementary advantages, and apply them earlier or later so that the peak crop fertilizer demand and the peak fertilizer supply are connected with each other, fully giving play to fertilizer efficiency.
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