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Talk About Nitrification Inhibitor

Quality

Nitrogenous fertilizer synergist is also called nitrification inhibitor. Its composition is a class of organic chemicals. Its actual properties are some fungicides. Mixing them with nitrogen fertilizer in farmland can reduce the loss of nitrogen fertilizer caused by denitrification and denitrification, thus improving the efficiency of nitrogen fertilizer.

Action principle

They can selectively inhibit the activity of nitrifying bacteria in soil, thus slowing down the reaction rate of ammonium nitrogen to nitrate nitrogen in soil. Ammonium nitrogen can be absorbed by soil colloid without loss. However, under the condition of soil permeability, ammonium nitrogen can be converted to nitrate nitrogen under the action of microorganisms. This process is called nitration. The rate of reaction depends on soil moisture and temperature. When the temperature is below 10 ℃, the nitration reaction is slow; when the temperature is over 20 ℃, the reaction is quick. In addition to some crops such as rice which can absorb ammonium nitrogen directly under irrigation, most crops absorb nitrate nitrogen. However, nitrate nitrogen is easy to be lost in soil, controlling the nitrification reaction rate by rational use of nitrification inhibitors can reduce the loss of nitrogen, and improve the efficiency of nitrogen fertilizer. Nitrification inhibitors are usually mixed with nitrogen fertilizer before application.

Scope of application 

Some lessons learned in production. When used in irrigating land and food crops, most show increased production, a small number show flat production or reduced production. It is unsteady when used in vegetables. It show reduced production for leguminous crops. From the perspective of soil conditions, the fertilizer efficiency of paddy field is better than that of dry land. All of the above experience has reference value.

Applications in agriculture

The application of nitrification inhibitors extends the retention time of ammonium in the soil, thus reducing the loss of nitric nitrogen leaching and nitrification , which results in the loss of nitrous oxide gas emissions. Similarly, urea is the largest amount of nitrogen fertilizer in China at present. After it is applied into the soil, it also forms a large amount of ammonium nitrogen through biochemical hydrolysis, and then it is transformed into nitrate nitrogen. In current agricultural production, obvious denitrification and denitrification gas loss may occur in areas with more rainfall, irrigated farmland or paddy fields. Therefore, in view of the above conditions, the addition of nitrification inhibitors in common nitrogen fertilizer will achieve a result of relatively high efficiency and relatively little nitrogen loss.

The application of nitrogen fertilizer synergist should emphasize pertinence. Only when the situation is targeted and selective, there will be a satisfactory effect. When, you choose the right situation, it will have a satisfactory effect. It is not needed and valid at any time, place and time. The reason is that nitrification inhibitors are mainly used to prevent nitrogen loss. If there is no possibility of nitrate nitrogen loss, the addition of inhibitors is meaningless and will not affect the efficiency of nitrogen fertilizer. In addition, it can do nothing if NO3- loss occurs when the inhibitory effect of the inhibitor disappears.
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