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Silicon-containing oil-coated slow-released compound rice fertilizer and preparation method thereof

A slow-release and oil-coated technology, which is applied in the preparation of organic fertilizers, urea compound fertilizers, layered/coated fertilizers, etc., to achieve good fertilization effects and soil improvement effects

Inactive Publication Date: 2016-11-16
当涂县南北圩水稻种植专业合作社
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Waste oil is easy to obtain, degradable in soil, non-polluting, and there are few reports on its application in the agricultural field

Method used

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Embodiment Construction

[0015] A silicon-containing oil-coated slow-release compound rice fertilizer is made from the following raw materials in parts by weight (kg):

[0016] Waste oil 20, elemental iodine 0.05, talc 10, fish scale 100, urea 80, oyster shell 9, bran 12, weathered coal 8, peat soil 7, earthworm powder 13, ferrous fumarate 1, chitosan 1, silicon sodium hydroxide 1.2, 0.4mol / L sodium hydroxide solution 800, glutaraldehyde 5, concentrated ammonia water amount, microbial powder 0.4, bentonite 18.

[0017] The preparation method of the silicon-containing grease-coated slow-release compound rice fertilizer comprises the following steps:

[0018] (1) Add elemental iodine to the waste oil, heat it to 180°C under the protection of nitrogen, and react at a constant temperature for 2.5 hours, continue to pass through nitrogen for protection and let it stand and cool to 22°C to obtain conjugated modified oil;

[0019] (2) Grinding talc into powder to make the particle size reach 0.01mm to obtai...

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Abstract

The invention discloses a silicon-containing oil-coated slow-released compound rice fertilizer. The rice fertilizer is prepared from, by weight, 20-22 parts of waste oil, 0.05-0.06 part of iodine, 10-11 parts of talc, 100-110 parts of fish scales, 80-85 parts of urea, 9-10 parts of oyster shells, 12-13 parts of bran, 8-9 parts of weathered coal, 7-8 parts of peat soil, 13-14 parts of earthworm powder, 1-1.1 parts of ferrous fumarate, 1-2 parts of chitosan, 1.2-1.3 parts of sodium silicate, 800-820 parts of 0.4 mol / L sodium hydroxide solution, 5-6 parts of glutaraldehyde, an appropriate amount of strong ammonia water, 0.4-0.5 part of microbial powder and 18-20 parts of bentonite. According to the silicon-containing oil-coated slow-released compound rice fertilizer, the waste oil is modified and can be cured just at normal temperature when coating is conducted, the fish scales are soaked with the sodium hydroxide solution for degumming, and generated hydroxyapatite has a porous structure and can serve as a carrier to adsorb the urea in pore passages; in addition, the compound rice fertilizer is rich in silicon and good in fertilization effect.

Description

technical field [0001] The invention relates to the technical field of fertilizer processing, in particular to a silicon-containing oil-coated slow-release composite rice fertilizer and a preparation method thereof. Background technique [0002] Slow-release fertilizer is a type of fertilizer that releases fertilizer nutrients slower than conventional water-soluble fertilizers after the fertilizer is applied to the soil. Two categories. At present, the film material of coated slow-release fertilizer produced industrially is mainly composed of synthetic high polymer resin, and the fluidized bed spraying method is adopted, and the process is complicated. Although slow-release fertilizers have achieved great development worldwide, the commercial price is 3-8 times that of ordinary fertilizers, which greatly limits the popularization and application. Therefore, the development and utilization of new efficient and low-cost slow-release coating materials is a solution. the crux ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05F17/00C05G3/80
CPCC05B7/00C05F17/00C05G3/00C05G3/80C05G5/30C05C9/02C05F1/00C05F1/005C05F5/002C05F11/02C05F11/08Y02W30/40
Inventor 李孝良曹玉洪
Owner 当涂县南北圩水稻种植专业合作社
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