Non-metallic mineral long-acting nitrogenous fertilizer nitrification inhibitor and preparation method thereof

Abstract

The invention discloses a non-metallic mineral long-acting nitrogenous fertilizer nitrification inhibitor and a preparation method thereof. The preparation method is characterized by comprising the following steps: introducing 1-50 parts of the nitrification inhibitor into 100 parts of 25-100 DEG C water so as to make a solution; adding 25-75 parts of nitrification inhibitor solution into every 100 parts of non-metallic mineral powder; and sufficiently stirring and drying so as to obtain the nitrification inhibitor; or a binder accounting for 1-5% of the total weight of the non-metallic mineral and the nitrification inhibitor solution is added, sufficiently stirred, palletized and dried; or a mixture of the non-metallic mineral and the nitrification inhibitor solution or a screened powder product covers the outer surface of the fertilizer. The product is prepared by utilizing the excellent abruption property of the non-metallic mineral, the process is simple, the cost is low, the slow-release effect is better, and the inhibition effect on the activity of soil enzyme is longer; and meanwhile the non-metallic mineral can further provide various beneficial elements to the soil, so that the physicochemical properties of the soil are improved.

Description

technical field [0001] The invention relates to a fertilizer stabilizer, in particular to a long-acting nitrogen fertilizer nitrification inhibitor using non-metallic minerals as an adsorbent and a preparation method thereof, belonging to the field of fertilizer additives. Background technique [0002] Excessive and unreasonable application of fertilizer nitrogen has led to generally low nitrogen use efficiency. The apparent utilization rate of nitrogen fertilizer in my country's agricultural production is only 30-35%, and it is even below 30% in high-yield areas. This has not only caused a huge waste of economy and resources, but also brought huge environmental risks, making the ecological environment security problem has become a major issue affecting the current and long-term agricultural production, agricultural product safety and human health. Therefore, how to regulate the transformation process of fertilizer nitrogen in the soil to promote its effective use, control ...

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Problems solved by technology

[0006] The object of the present invention is to provide a nitrogen fertilizer nitrification inhibitor with simple process, sufficient raw materials, low cost and remarkable effect, which is mainly formed by mixed adsorption of an aqueous solution of the nitrification inhibitor and non-metallic mineral powder, and solves the problem of such fertilizer additive carriers in the past. The problem of uneven and incomplete adsorption caused by direct mixing with additives is used to regulate the oxidation rate of ammonium nitrogen in nitrogen-containing fertilizers and reduce the formation of nitrate after fertilization

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