Determination of fertilizer application amount
Probiotics Powder,Bifidobacterium Adolescentis,Lactobacillus Salivarius,Lactobacillus Casei Xi'an Sentian Biotechnology Co., Ltd. , https://www.sentianbio.com
Fertilizer application should be based on a scientific formula recognized by Chinese authorities: (Crop's Required Fertilizer Quantity - Soil's Fertilizer Supply Capacity) ÷ Fertilizer Utilization Rate = The Actual Amount of Each Nutrient to Be Applied in the Field. When determining the fertilizer needs of crops, it is essential to consider the total amount of nutrients absorbed throughout the entire growth cycle under normal development conditions. Additionally, elements that function like catalysts or enzymes must also be taken into account.
When assessing soil fertility, it’s important to analyze not only the levels of various nutrients but also factors such as soil solution pH, moisture content, cation exchange capacity (CEC), electrical conductivity (EC), redox potential (EH), the balance of anions and cations, and salt bases. Interactions between inorganic nutrients and other environmental factors—such as parent material, microbial activity, organic matter, water, air, light, and temperature—must all be considered to accurately determine the actual fertility of the soil.
When evaluating fertilizer utilization, attention must be given to how the soil solution pH, CE, CEC, EH, nutrient availability, and ion balance change after fertilizer application. The effectiveness of fertilizers is influenced by many factors, including biological activity, soil structure, and environmental conditions. After the new balance is established, the actual fertilizer use efficiency can be calculated based on the percentage of nutrients absorbed by the crop.
In summary, scientific fertilizer application should follow several key principles. First, when deciding which fertilizers to use, it is crucial to identify which nutrients are lacking in the soil. Is the deficiency real, or are there limitations preventing the plant from utilizing available nutrients? What methods can be used to overcome these barriers to ensure the right type of fertilizer is applied?
Second, farmers should develop an ecological awareness. Overuse of chemical fertilizers can increase costs and cause environmental pollution. It’s important to apply fertilizers efficiently and sustainably.
Third, there should be a strong sense of land stewardship and long-term sustainability. By regularly applying organic fertilizers and micronutrient supplements, and by continuously adjusting soil pH, moisture, and CEC, the interactions between nutrients can shift from antagonistic to synergistic. This helps improve soil structure and promotes a more balanced and sustainable soil ecosystem, allowing the land to produce better yields over time.