Biological coated film time controlled fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of agricultural fertilizers, and discloses a biological coated film time controlled fertilizer and a preparation method thereof. The preparation method comprises the steps that nitrocellulose, castor oil extract and an organic high-molecular polymer are adopted, and the biological coated film time controlled fertilizer is prepared from the components inparts: 10-14 parts of nitrocellulose, 8-12 parts of castor oil extract and 6-10 parts of the organic high molecular polymer; nitrogen particles are first sieved into 3-5 mm diameter particles, then combined with a film coating material for use, then enter a fluidized bed for spraying and finally are sub-packaged; and the synthetic film coating material is divided into normal temperature synthesisand low-temperature synthesis. According to the biological coated film time controlled fertilizer and the preparation method thereof, biodegradable materials are used as raw materials, the problem ofwhite pollution caused by fertilizer control materials during film coating is effectively solved, fertilizer required amount is increased gradually as the ground temperature increases, the phenomenonof waste of the fertilizer effect in the process of fertilization is avoided, fertilizer efficiency and utilization of fertilizer are improved, and healthy growth of crops is promoted.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a bio-coated time-controlled fertilizer and a preparation method thereof. Background technique [0002] The use of chemical fertilizers has made an important contribution to the improvement of my country's grain production. However, in recent years, the problem of unscientific and irrational use of chemical fertilizers has become increasingly prominent. The average utilization rate of chemical fertilizers is only 20% to 35%, which leads to soil ecological balance, nutrient balance and There are problems with food security, and at the same time, the loss of fertilizers has also caused environmental pollution. [0003] The chemical fertilizers currently used in agricultural production are prone to leaching, chemical fixation, and volatilization reactions in the soil, resulting in serious loss of fertilizer nutrients and serious environmental pollution. I...

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Problems solved by technology

[0002] The use of chemical fertilizers has made an important contribution to the improvement of my country's grain production. However, in recent years, the problem of unscientific and irrational use of chemical fertilizers has become increasingly prominent. The average utilization rate of chemical fertilizers is only 20% to 35%, which leads to soil ecological balance, nutrient balance and There is a problem with food security, and at the same time, the loss of fertilizers also causes environmental pollution

[0003] The chemical fertilizers currently used in agricultural production are prone to leaching, chemical fixation, and volatilization reactions in the soil, resulting in serious loss of fertilizer nutrients and serious environmental pollution. In order to improve the utilization rate of fertilizers, there are Coated fertilizers, but due to the instability of ground temperature, ordinary coated fertilizers have low sensitivity to temperature, which is easy to cause waste of fertilizer efficiency, and the coating material is a synthetic polymer material that is not easy to degrade, containing certain benzenes and chloride ions Harmful substances, not only increase the production cost but also pollute the land environment, making it difficult to promote and use in the market