Carbon base long-acting nitrogen fertilizer biochemistry inhibitor and preparation method thereof

Abstract

The present invention discloses a carbon base long-acting nitrogen fertilizer biochemistry inhibitor preparation method, which concretely comprises: preparing a nitrogen fertilizer biochemistry inhibitor such as a urease inhibitor or a nitrification inhibitor into an aqueous solution with a certain concentration, adding the obtained aqueous solution to a carbonaceous absorption agent, uniformly mixing, drying, grinding and screening with a sieve, wherein the used carbonaceous absorption agent has wide sources, and can be active carbon, biological carbon or black carbon, the inhibitor content in the resulting product is 0.4-33.3%, and the obtained product can be directly applied into the soil in the powder form during a nitrogen-containing fertilizer applying process or before or after applying of a nitrogen-containing fertilizer, and can further be mixed into a nitrogen-containing fertilizer after granulation or be adopted as a coating layer to be coated on the outer portion of a particulate nitrogen-containing fertilizer. According to the present invention, the solid-liquid mixing absorption method is applied to ensure absorb the inhibitor to the surface and the internal of the carbonaceous material to the maximal degree, such that a slow-release effect is excellent, and an inhibition effect on soil enzyme activity is long-lasting. In addition, the used carbonaceous material has the wide sources, the cost is low, and the carbon base long-acting nitrogen fertilizer biochemistry inhibitor can be adopted as a carbon fixation manner to increase soil carbon sequestration and improve a soil environment, and is a veritable green fertilizer additive.

Description

technical field [0001] The invention relates to a nitrogen fertilizer biochemical inhibitor, in particular to a method for preparing a nitrogen fertilizer biochemical inhibitor based on adsorption, and belongs to the field of fertilizer additives. Background technique [0002] Nitrogen fertilizer, especially ammonium nitrogen fertilizer or amide nitrogen fertilizer (mainly applied in the form of urea, which is quickly hydrolyzed into ammonium under the action of soil urease after entering the soil) is the most required chemical fertilizer variety in agricultural production. It is important for increasing crop yield and improving agricultural products. quality plays an important role. However, the excessive and unreasonable application of fertilizer nitrogen has led to a generally low utilization rate of nitrogen fertilizer in my country at present. The seasonal utilization rate is only 30-35%, and the nitrogen loss rate in farmland is 30-50%. The loss of nitrogen through oth...

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Problems solved by technology

The difference from the present invention is that most studies or inventions are mainly based on simply mixing soil improvers or fertilizer synergists with carbonaceous mat

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