[Effect of different fertilization system on soil nutrient budget]

Area of Science:

• Agricultural Science
• Soil Science
• Environmental Science

Background:

• Long-term experiments are crucial for understanding sustainable agricultural practices.
• Nutrient recycling and reutilization are key components of ecological farming.
• Soil nutrient budgets require careful management to maintain productivity and environmental health.

Purpose of the Study:

• To investigate the impact of nutrient recycling on crop yield and soil nutrient budgets over ten years.
• To assess the balance of Nitrogen (N), Phosphorus (P), and Potassium (K) in soil under nutrient recycling.
• To determine if integrated nutrient management prevents environmental nutrient losses.

Main Methods:

• A ten-year field experiment was conducted on damp palm soil.
• Crop nutrient transfer and soil nutrient budgets (N, P, K) were quantified.
• Fertilizer application was adjusted based on soil nutrient supplying ability.

Main Results:

• Nutrient recycling combined with appropriate fertilization supported high crop yields.
• The soil nutrient budget for N, P, and K was balanced.
• No significant surplus of nutrients, particularly inorganic nitrogen, accumulated in the soil.

Conclusions:

• Sustainable farming systems can achieve high productivity through nutrient recycling.
• Integrated nutrient management balances crop needs and soil health.
• This approach effectively minimizes nutrient losses to the environment, reducing pollution risks.