Highly efficient and stable liquid urease inhibitor, and preparation method and application thereof

By using a synergistic formulation system of active ingredients, organic solvents, surfactants and stabilizers, the stability and compatibility issues of liquid urease inhibitors have been resolved, achieving efficient inhibition of urea hydrolysis and ammonia volatilization, and improving the utilization rate of urea nitrogen.

CN122404070APending Publication Date: 2026-07-17NANJING XINYI SYNTHETIC TECH CO LTD
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Patent Information

Application Number
CN202610721095.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing liquid urease inhibitors have poor stability, are easily decomposed, and have poor compatibility with liquid fertilizers, resulting in low urea nitrogen utilization and serious ammonia volatilization loss. Furthermore, existing solid formulations are inconvenient to use and do not mix evenly.

Method used

A highly efficient and stable liquid urease inhibitor was prepared by using a synergistic formulation system of active ingredients, organic solvents, surfactants and stabilizers, and controlling the pH value within a weakly acidic range of 3.0 to 5.5, ensuring compatibility with liquid fertilizers and long-term storage stability.

Benefits of technology

It significantly inhibits soil urease activity, delays urea hydrolysis, reduces ammonia volatilization loss by 40% to 60%, increases urea nitrogen utilization rate by 15 percentage points, and maintains an effective component decomposition rate of less than 5% after 2 years of storage at room temperature. It is also stable in the long term when mixed with liquid fertilizer.

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Abstract

本发明属于脲酶抑制剂技术领域,尤其涉及一种高效稳定的液体脲酶抑制剂,以总质量100份计,包括以下质量份数的组分:活性成分5~30份,有机溶剂30~60份,表面活性剂5~20份,稳定剂0.5~5份,酸化剂补足至100份;所述液体脲酶抑制剂的pH值稳定在3.0~5.5范围内。本发明通过活性成分、有机溶剂、表面活性剂、稳定剂和酸化剂的五组分协同配方体系,并将pH值稳定在3.0~5.5的弱酸性范围,解决了现有液体脲酶抑制剂储存不稳定、易分解、与肥料相容性差的技术问题。所得产品常温储存2年有效成分分解率低于5%,与常见液体肥料混合30天有效成分损失率小于3%,能显著抑制土壤脲酶活性,使尿素水解高峰推迟5~7天,氨挥发累积损失量减少40%~60%,作物氮肥利用率提高15个百分点以上。
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