Slow release type azophoska compound fertilizer and production method thereof

A compound fertilizer, nitrogen-phosphorus-potassium technology, applied in urea compound fertilizer, nitrogen fertilizer, potash fertilizer and other directions, can solve the problems of unreasonable adjustment of fertilizer components, pollution of soil and natural environment, unsatisfactory slow-release effect, etc., and achieve low manufacturing cost. , the effect of improving soil and protecting the environment
CN101503322BActive Publication Date: 2012-03-07SHIKEFENG CHEM IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHIKEFENG CHEM IND CO LTD
Publication Date
2012-03-07

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Abstract

The invention relates to a slow-release type nitrogen-phosphorus-potassium composite fertilizer and a production method thereof, belonging to a composite fertilizer with slow-release type nutrient. The composite fertilizer is characterized by comprising the following components by weight portions: 5 to 50 of slow-release composition of phosphogypsum and fly ash, 10 to 40 of urea, 10 to 45 of hydrochloric acidified phosphate rock powder, 10 to 35 of mixed potassic fertilizer, 0.5 to 2.0 of slow-release agent and 1 to 5 of trace element compound. The raw materials are mixed evenly, the conventional auxiliary materials are added for granulation, and then lamination is carried out so as to obtain the composite fertilizer. The invention provides an ideal slow-release type nitrogen-phosphorus-potassium composite fertilizer which has comprehensive nutrients, scientific and reasonable matching and slow rate of fertilizer decomposition and nutrient release, is in conformity with the absorptionrate of plants for nutrients, can improve the yield and quality of agriculture product, improve utilization rate of fertilizer, reduce rate of fertilizer application and agricultural production cost,and is beneficial to protection of soil and natural environment and a production method thereof.
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Description

technical field

[0001] The invention relates to a slow-release nitrogen, phosphorus and potassium compound fertilizer and a production method thereof. It is a mixed fertilizer with slow release of nutrients. Background technique

[0002] Chemical fertilizers provide the necessary nutrients for the growth of crops, play a vital role in the yield and quality of agricultural products, occupy a large share in the investment in the agricultural industry, and tend to have adverse effects on the soil environment and the natural environment. Therefore, the combination of nutrients is scientific and reasonable to match the growth needs of plants; the nutrients are released slowly to adapt to the absorption rate of nutrients by plants; the rate of fertilizer degradation and nitrification is slowed down to reduce fertilizer leaching and NO, NO 2 , NH 3 The gas form enters the atmosphere, thereby improving the utilization rate of fertilizers; chemical fertilizers and their manufacturi...

Claims

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