Carbon-based urea fertilizer

Abstract

The invention provides a carbon-based urea fertilizer, which is a fertilizer obtained by mixing biological black carbon, urea, effective microbial inoculum and a synergist. With the carbon-based urea fertilizer, the wastage rate of the urea in soil can be reduced, the fertilizer investment cost is reduced, bad influences on soil and ground water environments are avoided, and the effects of fertilizer reduction and emission reduction are realized simultaneously; the activity of urease in the soil is activated and improved and the urea is transformed into a nitrogen nutrient element which can be directly absorbed and utilized by crops; the bad influences of biuret in the urea on the crops can be greatly reduced; soil hardening caused by only using the urea is avoided; the looseness degree of the soil is improved and the soil hardening phenomenon is relieved; a soil crumble structure is increased, the volume weight of the soil is reduced, the physiological activity of the soil is improved, the soil environment is improved, and the fertilizer storage capacity and the water retaining capacity of the soil are improved; trace elements which are lacked by only applying phosphorus and are needed by crops are supplemented; and therefore, the crops can absorb nutrients in a more balanced way and the obvious production increasing effect can be realized.

Description

technical field [0001] The invention relates to a fertilizer mixed with biological black carbon and urea. Background technique [0002] At present, with the speed of national infrastructure construction and the acceleration of urbanization, the area of ​​arable land is getting smaller and smaller. In order to solve the food problem, people pursue grain yields and use a large amount of chemical fertilizers, causing and existing many adverse consequences: (1) Chemical fertilizers The effectiveness of fertilizers cannot be brought into full play. Part of the chemical fertilizers applied to the field is evaporated, polluting the air, and part of it seeps into the ground, polluting groundwater sources. The actual utilization rate (production rate) of chemical fertilizers is only 35%, especially in large areas of my country. On sandy land, the drip phenomenon is more serious. (2) The long-term use of chemical fertilizers alone to increase production has caused land compaction, and ...

AI Technical Summary

Problems solved by technology

[0002] At present, with the speed of national infrastructure construction and the acceleration of urbanization, the area of ​​arable land is getting smaller and smaller. In order to solve the food problem, people pursue grain yields and use a large amount of chemical fertilizers, causing and existing many adverse consequences: (1) Chemical fertilizers The effectiveness of fertilizers cannot be brought into full play. Part of the chemical fertilizers applied to the field is evaporated, polluting the air, and part of it seeps into the ground, polluting groundwater sources. The actual utilization rate (production rate) of chemical fertilizers is only 35%, especially in large areas of my country. On sandy land, the dripping phenomenon is more serious

(2) The long-term use of chemical fertilizers alone to increase production has caused land compaction, and instead turned the original medium-high-yield fields into medium-low-yield fields

(3) Due to the continuous use of chemical fertilizers, the original fertilizer efficiency of chemical fertilizers is greatly reduced. For the same yield per mu, the amount of chemical fertilizers should be gradually increased.

(4) The amount of chemical fertilizer used in China ranks first in the world, and the production of each ton of chemical fertilizer requires about 2 tons of standard coal. Coal combustion increases carbon dioxide emissions and increases the emission reduction task of the chemical fertilizer industry

(5) Due to the conversion of urea in the soil, a large amount of ammonium ions can be accumulated, which will cause the pH value to increase by 2-3 units. In addition, urea itself contains a certain amount of biuret. When the concentration is 500ppm, it will be harmful to the soil. Crop young roots and shoots act as inhibitors, so urea is not easy to use as seed fertilizer