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Water-retention type grease-coated slow-release rice fertilizer and preparation method thereof

A film-coated slow-release, water-retaining technology, applied in layered/coated fertilizers, organic fertilizers, ammonium salt fertilizers, etc., to achieve the effect of improving water retention

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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Examples

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Embodiment Construction

[0015] A water-retaining oil-coated slow-release rice fertilizer, made of the following raw materials in parts by weight (kg):

[0016] Waste oil 20, elemental iodine 0.05, talc 10, fish scale 100, urea 80, straw 20, rice bran 19, potassium fulvic acid 0.4, zinc methionine 0.3, auxin 0.1, yeast waste liquid 5, sodium alginate 2, 0.4mol / L sodium hydroxide solution 800, glutaraldehyde 5, strong ammonia water amount, microbial powder 0.4, bentonite 18.

[0017] The preparation method of described grease-coated slow-release 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 obtain talc powder;

[0020] (3) Wash the fish scales with water to...

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PUM

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Abstract

The invention discloses water-retention type grease-coated slow-release rice fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 20-22 parts of waste grease, 0.05-0.06 part of elementary substance iodine, 10-11 parts of talc, 100-110 parts of fish scale, 80-85 parts of urea, 20-22 parts of straw, 19-20 parts of rice chaff, 0.4-0.5 part of BSFA, 0.3-0.4 part of zinc methionine, 0.1-0.2 part of auxin, 5-6 parts of waste yeast solution, 2-3 parts of sodium alginate, 800-820 parts of 0.4mol / L sodium hydroxide solution, 5-6 parts of glutaric dialdehyde, a defined amount of stronger ammonia water, 0.4-0.5 part of microorganism bacteria powder and 18-20 parts of bentonite. According to the water-retention type grease-coated slow-release rice fertilizer, the waste grease is modified and can be solidified in a normal temperature when being coated, after the fish scale is soaked and degummed by sodium hydroxide, generated hydroxyapatite is of a porous structure, and the hydroxyapatite can serve as a carrier to absorb the urea in channels. In addition, the water-retention type grease-coated slow-release rice fertilizer can improve water retention of soil.

Description

technical field [0001] The invention relates to the technical field of fertilizer processing, in particular to a water-retaining oil-coated slow-release 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 of the matter...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/00C05G3/90
CPCC05B17/00C05G3/00C05G3/90C05G5/30C05C3/00C05C9/00C05C11/00C05D9/00C05F5/002C05F5/008C05F11/00C05F11/02C05F11/08
Inventor 高祥吴金水
Owner 当涂县南北圩水稻种植专业合作社
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