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Complex environmental-friendly fertilizer synergist and preparation method and application thereof

A fertilizer synergist, fertilizer technology, applied in the application, fertilization device, fertilizer mixture and other directions, to achieve the effect of improving the utilization rate, prolonging the validity period, and improving the utilization rate of chemical fertilizers

Active Publication Date: 2016-03-30
INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no compound environmentally friendly fertilizer technology with both slow release and loss control functions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Use gamma rays (2MeV, 10kGy) to irradiate attapulgite (5kg) for 5 minutes (packed in a snakeskin bag, the thickness is controlled at 5cm), and then use microwave (1kW) to treat it for 20 minutes (packed in snakeskin bag), make the attapulgite rod crystals fully dispersed for later use;

[0042] (2) Mix 3-aminopropyltriethoxysilane with the attapulgite obtained in (1) according to the ratio of 1ml: 3g, then add water to make a suspension, so that the concentration of attapulgite is 8g / L . Then, at 40 degrees Celsius, stir (100 rpm) for 3 hours, centrifuge (4000 rpm) for 5 minutes, and discard the supernatant, thereby modifying the surface of the attapulgite rod crystals with 3-aminopropyltriethoxysilane. Then add tap water to make the attapulgite concentration 8g / L.

[0043] (3) add humic acid (it is provided by weathered coal, wherein humic acid content is 40%) in the suspension liquid obtained in (2) and make its concentration be 1.6g / L, stir 10 minutes at 30 degre...

Embodiment 2

[0047] (1) Utilize gamma rays (5MeV, 50kGy) to irradiate attapulgite (10kg) for 20 minutes (packed in a snakeskin bag, the thickness is controlled at 10cm), then utilize microwave (2kW) to treat for 40 minutes (packed in snakeskin bag), make the attapulgite rod crystals fully dispersed for later use;

[0048] (2) Mix 3-aminopropyltriethoxysilane with the attapulgite obtained in (1) according to the ratio of 2ml:5g, then add water to make a suspension, so that the concentration of attapulgite is 16g / L . Then, at 60 degrees Celsius, stir (500 rpm) for 1 hour, centrifuge (10000 rpm) for 10 minutes, and discard the supernatant, thereby modifying the surface of the attapulgite rod crystal with 3-aminopropyltriethoxysilane. Then add tap water to make the concentration of attapulgite at 16g / L.

[0049] (3) add humic acid (it is provided by weathered coal, wherein humic acid content is 70%) in the suspension liquid that obtains in (2) and make its concentration be 2.8g / L, stir 30 mi...

Embodiment 3

[0056] (1) Use gamma rays (2MeV, 10kGy) to irradiate attapulgite (5kg) for 5 minutes (packed in a snakeskin bag, the thickness is controlled at 5cm), and then use microwave (1kW) to treat it for 20 minutes (packed in snakeskin bag), make the attapulgite rod crystals fully dispersed for later use;

[0057] (2) Mix 3-aminopropyltriethoxysilane with the attapulgite obtained in (1) according to the ratio of 1ml: 3g, then add water to make a suspension, so that the concentration of attapulgite is 8g / L . Then, at 40 degrees Celsius, stir (100 rpm) for 3 hours, centrifuge (4000 rpm) for 8 minutes, and discard the supernatant, thereby modifying the surface of the attapulgite rod crystals with 3-aminopropyltriethoxysilane. Then add tap water to make the attapulgite concentration 8g / L.

[0058] (3) add humic acid (it is provided by weathered coal, wherein humic acid content is 40%) in the suspension liquid obtained in (2) and make its concentration be 1.6g / L, stir 10 minutes at 30 deg...

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Abstract

The present invention discloses a fertilizer synergist and a preparation method thereof. The fertilizer synergist is prepared by the method comprising the following steps: (1) using gamma-ray for radiation of attapulgite placed in a snake leather bag, and treating the irradiated attapulgite with microwave; (2) mixing a silane coupling agent, the treated attapulgite and water for reaction to obtain silane-coupling-agent modified attapulgite; (3) mixing humic acid and the silane-coupling-agent modified attapulgite obtained by the step (2) for reaction to obtain a humic acid-attapulgite complex; and evenly mixing the humic acid-attapulgite complex and sodium carboxymethyl cellulose and sodium polyacrylate to obtain the fertilizer synergist. The fertilizer synergist allows the slow-release of fertilizer nutrients, but also can control nutrient loss. The fertilizer synergist can effectively improve the utilization rate of the fertilizer nutrients, reduces environmental pollution and promotes agricultural production increase.

Description

technical field [0001] The invention belongs to the field of preparation of chemical fertilizer synergists, and in particular relates to a novel high-efficiency chemical fertilizer synergist and its preparation method and application. Background technique [0002] my country is a big producer and consumer of chemical fertilizers. At present, my country's fertilizer utilization rate is very low, nitrogen, phosphorus, and potassium fertilizers are 25% to 30%, 10% to 25%, and 35% to 50%, respectively. At present, my country uses 240 kilograms of chemical fertilizer per hectare, and the amount of fertilizer per unit area is 1.6 times the world average. The utilization rate of chemical fertilizers in my country is much lower than that of developed countries, and the use efficiency of chemical fertilizers is showing a downward trend. The annual loss of nitrogen due to fertilization in the country reaches 16.5 million tons, and the economic loss is nearly 100 billion yuan. The mo...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 仲乃琴蔡冬清董彦旭吴正岩吴丽芳赵盼
Owner INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
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