Synonyms:Slow-release urea

Standard:Q/NDR 011-2001

Usage:Mainly used as fertilizer.In urea as nitrification inhibitor to applied in upgrade the efficiency of nitrogen in urea.And suitable for plants whose growths require nitrogen.It has remarkable effects on plants with longer growth period.

Package:Packed in net 50kg plastic woven bag with plastic bag inside.

Storage and transportation:Stored in dry and ventilated warehouse.Handle with care when transportation,loading and unloading.Away from rain and sunlight.

photo

Urea is the kind of nitrogen fertilizer that is widely used in the agriculture. Its output and application are being increased year by year. It is estimated the volume of application in the 21 century will reach 20 million tons. However the efficacy of nitrogen of urea is only 30-40%, which is much lower than that of 50-60% in the developed countries. The low efficacy of nitrogen led to the cost increase, resources waste and environment pollution like volatilization of NH3, emission of oxide of nitrogen and oxygen. So it is of crucial importance to improve the efficiency of urea.

Qiangli urea is made of urea and calcium cyanamide. Calcium cyanamide is also called lime nitrogen. Molecular formula is CaCN₂with 20% nitrogen. It can be used as nitrogen fertilizer and meanwhile it can act as pesticide and weedicide. In the soil calcium cyanamide reacts with H₂O and CO₂ to form the Cyanamid and then is changed into NH₄, which can be absorbed easily. Free Cyanamid formed in a series of reactions, will finally turn into dicyandiamide through polymerization, which is good nitrification inhibitor. Adding it into urea will extend the efficiency period and efficacy of the nitrogen of urea in terms of transformations of calcium cyanamide.