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Special slow release fertilizer for corn zinc power and preparation method thereof

A technology for slow-release fertilizer and corn, which is applied to the field of slow-release fertilizer for corn and its preparation, can solve the problems of unacceptable, low fertilizer utilization rate, and high fertilizer price, etc., and achieve balanced nutrient distribution, high fertilizer utilization rate, and increased production. good effect

Inactive Publication Date: 2012-06-13
STANLEY AGRI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The price of fertilizers that can better achieve delayed release is expensive, several times that of ordinary fertilizers, and it is difficult for ordinary people to accept;
[0005] 2. Ordinary slow-release fertilizers lack zinc, which can easily lead to zinc deficiency in crops and affect growth;
[0006] 3. The nutrient release law of ordinary slow-release fertilizers cannot match the absorption law of corn, resulting in low fertilizer utilization efficiency

Method used

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  • Special slow release fertilizer for corn zinc power and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0053] To prepare the special slow-release fertilizer for corn zinc power, the contents of nitrogen, phosphorus pentoxide and potassium oxide are 28%, 6% and 6% respectively, which are percentages by mass.

[0054] Take 580kg of small granule urea, 140kg of monoammonium phosphate, 100kg of potassium chloride, 10kg of EDTA chelated zinc, 2kg of urease inhibitor, 2kg of nitrification inhibitor, and 166kg of bentonite as raw materials;

[0055] Accurately measure the above-mentioned raw materials, and use the tower melt granulation process for spray granulation production: use urea melt to mix with raw materials such as monoammonium phosphate and potassium chloride strictly measured according to the formula to form a low eutectic melt with good fluidity The solid suspension mixed slurry, and through the granulation nozzle, the mixed slurry is sprayed into the granulation tower, so that it exchanges heat with the rising air flow during the gravity fall process, cools and solidifies...

Embodiment 2

[0056] Embodiment 2: prepare special slow-release fertilizer for corn zinc power, nitrogen, phosphorus pentoxide, potassium oxide content are respectively 30%, 5%, 5%, are mass percent;

[0057] Get 630kg of small granule urea, 110kg of monoammonium phosphate, 85kg of potassium chloride, 10kg of EDTA chelated zinc, 2kg of urease inhibitor, 2kg of nitrification inhibitor, and 161kg of bentonite;

[0058] The above-mentioned raw materials are accurately measured, and the preparation process is the same as in Example 1.

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Abstract

The invention which discloses a special slow release fertilizer for corn zinc power and a preparation method thereof relates to the technical field of slow release fertilizers. The preparation method which follows a nutrient absorption rule of corn comprises the following steps: burdening heated short grained urea, monoammonium phosphate, potassium chloride, chelated zinc, a urease inhibitor, a nitration inhibitor and bentonite according to a prescribed ratio, fusing urea at a high temperature, mixing, nozzle-granulating, cooling, screening, metering, and packaging. The special fertilizer has the advantages of reasonable nutrient distribution ratio, corn photosynthesis promotion, effective improvement of the absorption utilization rate of the fertilizer, and production cost saving.

Description

technical field [0001] The invention relates to the technical field of slow-release fertilizers, in particular to a slow-release fertilizer for corn and a preparation method thereof. Background technique [0002] Corn is one of the main food crops in my country, and it is also an important feed crop. Maize has a high biological yield and requires a large amount of fertilizer. Scientific and rational fertilization is an important aspect of high-yield, high-quality and efficient development of maize production. Zinc is an essential nutrient for crop growth. When zinc is deficient in corn, the photosynthesis of the leaves will be weakened, the growth will be inhibited, the leaves will shrink and twist, the mesophyll tissue of the leaves will become thinner, and the chlorosis or albinism between the veins will easily occur. Mosaic disease will affect the crop yield. . Zinc deficiency has become the bottleneck of increasing crop production and a worldwide problem in increasing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08A01C21/00C05G3/90
CPCY02P60/21
Inventor 高进华陈大印周丽解学仕
Owner STANLEY AGRI GRP CO LTD
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