1. Characteristic 1: a component of urea and nitrogen stabilizer, including: (a) urea； (b) a nitrogen stabilizer composed of a urea inhibitor, a nitrification inhibitor or a combination thereof； and (c) less than 1, The specific urea weight of 8% is calculated according to the total weight of urea components and nitrogen stabilizer. 2. Characteristic 2: a component of urea and nitrogen stabilizer, including: (a) urea； (b) a component of urea inhibitor in a liquid vehicle composed of n-methyl-2-pyridine (NMP)；Based on the total weight of urea components and nitrogen stabilizers, the MFN content is less than 0.1% (weight)； (c) a nitrification inhibitor. Requiremene 15: any urea components and nitrogen stabilizers in the above requirements, including nitrification inhibitors, If he attends the meeting, he will be selected as a group consisting of imine dioxide, hydrogen sulfide, 1-mercato-1,2,4-triazol, 2-amino-4-chloro-6-methylpyridine, 2,4-diamino-6-trichloro-methylcyanogen and 2-Chloro-6 - (trichloromethylpyridine).3,4-dimethylpyridine phosphate (DMP),1H-1 2 4-triazol 3-metilpirazol lila India Juss (Neem) y nitrapirina Reivindicaci n 16 La composici n de urea y estabilizante de nitr geno de cualquiera de las reivindicaciones precedentes que adem s comprende otro componente seleccionado del grupo que consiste en un There's another color D. Claim 26: method of producing a solid urea and nitrogen stabilizer component for any of the above claims, including: (a) forming molten urea； (b) adding such solidified nitrogen component； and (c) cooling the melted urea component and solidified nitrogen to form such component Solid urea composition and nitrogen stabilizer. Claim 41: a system for mixing stable nitrogen components selected from the group, including a urea inhibitor component and a nitration inhibitor component and a mixture thereof；Using melted urea, the system includes a urea synthesis device, a water evaporation device under the urea synthesis device, and at least
