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Oil-coated slow-release rice fertilizer capable of preventing soil hardening and preparation method thereof

A coating slow-release and hardening technology, which is applied in the direction of layered/coated fertilizers, fertilizers made from biological waste, and fertilizer forms to improve the slow-release effect and prevent soil hardening

Inactive Publication Date: 2016-12-07
MAANSHAN SHENGNONG GRAIN IND PRODUCTIVITY PROMOTION CENT CO LTD
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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

Experimental program
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Effect test

Embodiment Construction

[0015] A kind of grease-coated slow-release rice fertilizer that can prevent soil compaction 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, soybean hull 20, bone 11, sorghum bran 14, spirulina 4, ε-polylysine 0.2, gelatin 2, leaf humus 10, river sand 9. 0.4mol / L sodium hydroxide solution 800, glutaraldehyde 5, concentrated ammonia water, microbial powder 0.4, bentonite 18.

[0017] The preparation method of the described grease-coated slow-release rice fertilizer that can prevent soil caking 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 tal...

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Abstract

The invention discloses an oil-coated slow-release rice fertilizer capable of preventing soil hardening. The fertilizer is prepared from the following raw materials in parts by weight: 20-22 parts of waste oil, 0.05-0.06 part of simple substance iodine, 10-11 parts of talcum, 100-110 parts of fish scale, 80-85 parts of urea, 20-22 parts of soybean hull, 11-12 parts of bone, 14-15 parts of sorghum bran, 4-5 parts of Spirulina, 0.2-0.3 part of epsilon-polylysine, 2-3 parts of gelatin, 10-11 parts of leaf mold, 9-11 parts of river sand, 800-820 parts of 0.4 mol / L sodium hydroxide solution, 5-6 parts of glutaric dialdehyde, a right amount of stronger ammonia water, 0.4-0.5 part of microbial powder and 18-20 parts of bentonite. The waste oil is modified, so that the modified waste oil can be cured at normal temperature in the coating process; the fish scales are immersed in sodium hydroxide for degumming to generate hydroxyapatite with a porous structure, and the hydroxyapatite can be used as a carrier to adsorb urea in the pores; and besides, the fertilizer can prevent soil hardening.

Description

technical field [0001] The invention relates to the technical field of fertilizer processing, in particular to an oil-coated slow-release rice fertilizer capable of preventing soil compaction 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. ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G5/00C05G3/80
CPCC05C9/00C05G3/80C05G5/30C05D9/00C05F1/002C05F1/005C05F5/002C05F11/00C05F11/08
Inventor 陈世勇
Owner MAANSHAN SHENGNONG GRAIN IND PRODUCTIVITY PROMOTION CENT CO LTD
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