Corn special controlled-release composite fertilizer

A corn-specific, compound fertilizer technology, applied in applications, fertilization devices, fertilizer mixtures, etc., can solve the problems of restricting the popularization and use of controlled-release compound fertilizers, high sales prices, and high production costs, to promote absorption, improve utilization, and The effect of enhancing particle hardness

Inactive Publication Date: 2010-06-02
TIELING LAOKANG FERTILIZER IND
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Problems solved by technology

[0002] Controlled-release compound fertilizer is a kind of chemical fertilizer that can control the nutrient release rate of chemical fertilizer in the soil by adding urease inhibitors, nitrification inhibitors or coating technology to ordinary chemical fertilizers. Its advantage is that the utilization rate of chemical fertilizers is high. Compared with chemical fertilizers, the effect of increasing production is obvious, and the application amount of chemical fertil...

Method used

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  • Corn special controlled-release composite fertilizer
  • Corn special controlled-release composite fertilizer
  • Corn special controlled-release composite fertilizer

Examples

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Embodiment Construction

[0026] The present invention will be described in further detail below by way of examples.

[0027] A special controlled-release compound fertilizer for corn, consisting of components in parts by weight shown in table 6:

[0028] Table 6. A kind of basic raw material proportioning unit of special controlled-release compound fertilizer for corn: parts by weight

[0029]

[0030] Examples 1 and 2 in Table 6 are special controlled-release compound fertilizers for free top dressing type corn, and examples 3 and 4 are special controlled-release compound fertilizers for base fertilizer type corn.

[0031] Table 7 is the component and weight percent of compound control agent in the special controlled-release compound fertilizer for corn of the present invention

[0032] Table 7. Components of the composite control agent unit: weight percent

[0033]

[0034] The raw material urease inhibitor in table 7 is natural humic acid, active humic acid ≥ 55%; Nitrification inhibitor is...

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Abstract

The invention discloses a corn special controlled-release composite fertilizer which comprises the following ingredients in parts by weight of: 120 to 180 parts of potassium chloride, 150 to 180 parts of diammonium phosphate, 100 to 550 parts of large-granule urea, 50 to 120 parts of ammonium sulfate, 110 to 360 parts of granular superphosphate and 8 to 80 parts of composite control agent, wherein the composite control agent contains urease inhibitor, nitrification inhibitor, ammonium sulfate and clay. The corn special controlled-release composite fertilizer releases nutrients aiming at nutritional demand characteristics at various stages of corn growth, is synchronous in fertilizer nutrient supply amount, strength and time as well as corn growth demands, and has low production material cost.

Description

technical field [0001] The invention relates to the field of chemical fertilizers, in particular to a controlled-release compound fertilizer. Background technique [0002] Controlled-release compound fertilizer is a kind of chemical fertilizer that can control the nutrient release rate of chemical fertilizer in the soil by adding urease inhibitors, nitrification inhibitors or coating technology to ordinary chemical fertilizers. Its advantage is that the utilization rate of chemical fertilizers is high. Compared with chemical fertilizers, the effect of increasing production is obvious, and the application amount of chemical fertilizers is small. However, due to its high production cost, its sales price is high. At present, it is only used for ornamental plants such as flower seedlings, which limits the promotion of controlled-release compound fertilizers in field crop production. In the prior art, there is no special controlled-release compound fertilizer for the release of n...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 康庄
Owner TIELING LAOKANG FERTILIZER IND
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