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A kind of value-added urea capable of activating soil and its preparation method
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A urea and soil technology, applied in the direction of urea compound fertilizer, calcium fertilizer, application, etc., can solve problems such as unreachable, achieve the effect of reducing consumption, reducing non-point source pollution, and improving fertilizer utilization rate
Active Publication Date: 2021-01-08
SHENZHEN BATIAN ECOTYPIC ENG
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Abstract
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Problems solved by technology
[0009] The above-mentioned patented technology is still not enough, and it cannot achieve multiple functions such as activating the soil and improving the utilization rate of urea.
Method used
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Embodiment 1
[0036] The preparation of embodiment 1 value-added urea
[0037] A preparation method of value-added urea capable of activating soil, comprising the following steps:
[0038] (1) Put 80kg of urea into the melting tank for melting, and control the temperature at 115°C;
[0039] (2) Put 15kg of humic acid, 16kg of alginic acid, 2.5kg of HEDP, and 3.6kg of PVA into the urea melting tank, and stir for 2 minutes;
[0040] (3) Add 6.8 kg of zincoxide into the melting tank, stir for 15 minutes, and then spray it into the prilling tower through a special nozzle for granulation to obtain value-added urea 1.
Embodiment 2
[0042] A preparation method of value-added urea capable of activating soil, comprising the following steps:
[0043] (1) Put 60kg of urea into the melting tank for melting, and control the temperature at 115°C;
[0044] (2) Put 16kg of brown humic acid, 20kg of alginic acid, 5.5kg of PAM, and 3.5kg of DTPMP into the urea melting tank, and stir for 2 minutes;
[0045] (3) Add 2 kg of zincoxide, 3 kg of calciumoxide, and 4 kg of magnesium oxide into the melting tank, stir for 15 minutes, and then spray into the prilling tower through a special nozzle for granulation to obtain value-added urea 2.
Embodiment 3
[0047] A preparation method of value-added urea capable of activating soil, comprising the following steps:
[0048] (1) Put 70kg of urea into the melting tank for melting, and control the temperature at 115°C;
[0049] (2) Put 8 kg of fulvic acid, 5 kg of chitosan, 2.5 kg of gluconic acid, 3.5 kg of PVA, and 1.5 kg of PAM into the urea melting tank, and stir for 3.5 min;
[0050] (3) Add 3 kg of zinc oxide and 4 kg of iron oxide into the melting tank, stir for 15 minutes, and then spray into the prilling tower through a special nozzle for granulation to obtain value-added urea 3 .
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Abstract
The invention provides value-added urea capable of activating soil. The value-added urea is composed of, by weight, 40-100 parts of urea, 5-50 parts of high-activity organic matter, 0.05-20 parts of a chelating agent and 0.5-15 parts of medium trace elements in oxidation state. The invention also provides a preparation method and application of the value-added urea. The high-activity organic matter and the chelating agent added in the product can have a good urease inhibition effect, inhibit generation of ammoniumnitrogen and nitratenitrogen, increase utilization rate of fertilizers, improve granular structure of soil, regulate moisture, fertilizer, gas and heat of soil, and improve riphzosphere environment of crops.
Description
technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a value-added urea capable of activating soil and a preparation method thereof. Background technique [0002] Urea is a nitrogenfertilizer with high nitrogen content, large dosage and convenient application in the process of agricultural production in my country. However, because it is applied to the soil and subjected to the action of urease, the fertilizer effect is very short and the utilization rate is low. On the other hand, the status quo of fertilization in my country is heavy application of macronutrients and light application of medium and trace element fertilizers. However, the grain output continues to increase, the yield per unit area continues to increase, and the trace elements taken away by crops from the soil are also increasing, resulting in medium and trace element fertilizers in the soil. The continuous reduction of trace elements has seriously affected t...
Claims
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Application Information
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