Special high-yield disease-resistant controlled-release fertilizer for potatoes and application thereof

By using double-layer microbial agent coating to enhance the effect of controlled-release urea and controlled-release potassium-magnesium fertilizer, combined with modified sulfur coating technology and microbial agent loading in the inner and outer membrane layers, the problem of unreasonable nutrient ratio in potato-specific fertilizers has been solved, achieving high yield and disease resistance in potatoes, and improving potato yield and quality.

CN121135522APending Publication Date: 2025-12-16INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Patent Information

Application Number
CN202511462762.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-14
Publication Date
2025-12-16

AI Technical Summary

Technical Problem

The nutrient ratio in existing potato-specific fertilizers is unreasonable, making it difficult to meet the nutrient requirements of potatoes during their growth period, and they are also unable to effectively control diseases, resulting in a decline in yield and quality.

Method used

Enhanced controlled-release urea and controlled-release potassium-magnesium fertilizer, coated with double-layer microbial agents, achieve precise supply of nitrogen, potassium, and magnesium through modified sulfur coating technology and microbial agent loading on both inner and outer membranes. They also provide beneficial microbial agents during the critical growth stages of potatoes, enhancing plant resistance and disease control.

Benefits of technology

It improves potato yield and quality, reduces disease occurrence, optimizes nutrient utilization, lowers labor costs, is suitable for one-time fertilization in northern regions, and meets the nutrient requirements of potatoes during their growth period.

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Abstract

The invention discloses a potato high-yield disease-resistant controlled-release special fertilizer and application thereof, and relates to the technical field of fertilizer production. The high-yield disease-resistant controlled-release fertilizer special for the potatoes is prepared by adopting synergistic controlled-release urea coated with double-layer microbial agents and a controlled-release potassium-magnesium fertilizer as raw materials, wherein the synergistic controlled-release urea coated with the double-layer microbial agents is prepared by performing double-layer coating on urea through a micro-capsule loaded microbial agent. The fertilizer prepared by the invention has an optimized nutrient proportion of high potassium, medium and high nitrogen and low phosphorus, and the nutrient type and dosage accord with the nutrient requirement rule of the potatoes on macroelements. Meanwhile, the controlled release effect is realized by adopting a modified sulfur coating technology, so that the nutrient requirements of the potatoes in the key growth period are met. Through the comprehensive nutrient controlled release and inner and outer film layer fungicide loading technology, the nutrient utilization efficiency can be greatly improved, the potassium and magnesium absorption rate and the plant resistance of the potatoes are improved, diseases are reduced, the yield of the potatoes per unit area is remarkably improved, and the fertilization amount and the fertilization frequency can be reduced.
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