Nutritional soil water retention composition as well as preparation method and application thereof

A nutritional and compositional technology, which is applied in the field of nutritional soil water-retaining compositions, can solve the problems of no nutritional water-retaining agents, etc., and achieve the effects of easy large-scale production, low production costs, and increased service life

Active Publication Date: 2021-09-17
烟台凯多海洋生物研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is no report on the preparation of nutritional water-retaining agents using the microporous structure of the specific particle size of oyster shells and the water-retaining agent of the three-dimensional grid structure.

Method used

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  • Nutritional soil water retention composition as well as preparation method and application thereof
  • Nutritional soil water retention composition as well as preparation method and application thereof
  • Nutritional soil water retention composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare the nutritional soil water retention composition, the steps are as follows:

[0045] (1) After cleaning the surface of the oyster shell, soak it in tap water for 48 hours, and change the water twice during the period; then immerse it in 10wt% hydrochloric acid solution for 48 hours; the acid-treated oyster shell is cleaned with water, and after drying, it is coarsely crushed, and then Carry out ultrafine pulverization with a universal pulverizer, pass through a 30-mesh and 100-mesh sieve, and collect particles with a particle size between 30 and 100 mesh for later use.

[0046] (2) Mix the oyster shell powder obtained in step (1), sodium polyacrylate and water evenly to form a suspension; the addition of sodium polyacrylate is 10wt% of the oyster shell powder, and the addition of water is based on oyster shell powder 70wt%.

[0047] (3) Put the suspension obtained in step (2) in an autoclave at 130°C and 1.5MPa, mix and heat for 8h, cool, dry at 70°C until the mo...

Embodiment 2

[0050] Prepare the nutritional soil water retention composition, the steps are as follows:

[0051] (1) Wash the surface of the oyster shell and soak it in tap water for 48 hours, changing the water twice during the period; then immerse it in 10wt% hydrochloric acid solution for 48 hours; clean the acid-treated oyster shell with water, coarsely crush it after drying, and then Carry out ultrafine pulverization with a universal pulverizer, pass through a 30-mesh and 100-mesh sieve, and collect particles with a particle size between 30 and 100 mesh for later use.

[0052] (2) The oyster shell powder obtained in step (1), sodium polyacrylate and water are mixed evenly to form a suspension; the addition of sodium polyacrylate is 15wt% of the oyster shell powder, and the addition of water is based on oyster shell powder 70wt%.

[0053] (3) Put the suspension obtained in step (2) in an autoclave at 150°C and 1.8MPa, mix and heat for 6h, cool, dry at 70°C until the moisture content i...

Embodiment 3

[0056] 1. Prepare the nutritional soil water retention composition, the steps are as follows:

[0057] (1) Wash the surface of the oyster shell and soak it in tap water for 48 hours, change the water twice during this period, and then immerse it in 10wt% hydrochloric acid solution for 48 hours; the acid-treated oyster shell is cleaned with water, coarsely crushed after drying, and then Carry out ultrafine pulverization with a universal pulverizer, pass through a 30-mesh and 100-mesh sieve, and collect particles with a particle size between 30 and 100 mesh for later use.

[0058] (2) Mix the oyster shell powder obtained in step (1), sodium polyacrylate and water to form a suspension; the addition of sodium polyacrylate is 20wt% of the oyster shell powder, and the addition of water is 70wt of the oyster shell powder %.

[0059] (3) Put the suspension obtained in step (2) in an autoclave at 140°C and 1.6MPa, mix and heat for 7h, cool, dry at 70°C until the moisture content is lo...

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Abstract

The invention discloses a nutritional soil water retention composition, which is prepared from the following ingredients in parts by weight: 30 to 70 parts of oyster shell-water retention agent mixtures, 1 to 10 parts of hydroxypropyl methyl cellulose and 10 to 20 parts of dehydrated xylitol residues. The oyster shell-water retention agent mixture comprises the following components: oyster shell powder and a water retention agent, wherein the use amount of the water retention agent is 1-20wt% of the mass of the oyster shell powder. The invention further discloses a preparation method of the nutritional soil water-retention composition and an application of the nutritional soil water-retention composition in soil improvement. The nutritional water-retention agent provided by the invention not only can provide elements such as calcium, magnesium, strontium and the like required by soil, but also has a synergistic effect with the water-retention agent with a three-dimensional grid structure, so that the prepared nutritional water-retention agent plays a stronger role in water and fertilizer retention, improves the soil environment and increases the crop yield.

Description

technical field [0001] The invention belongs to the field of soil improvers, and in particular relates to a nutritional soil water retention composition, its preparation method and application. Background technique [0002] my country is a country seriously short of water resources. The total area of ​​arid and semi-arid areas is 5.08 million square kilometers, accounting for 53% of the total land area. Among them, agricultural water occupies a large proportion of my country's water resources utilization. Water resources The crisis has gradually become one of the resource and environmental problems we are facing. Especially in the northwestern region of my country, the drought is generally more serious. At present, the relatively mature technologies are only engineering technologies such as micro-irrigation and drip irrigation with large investment, while water-retaining agents with low investment and good water-saving performance are rarely popularized and applied. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80A01B79/02A01B79/00
CPCC05G3/00C05G3/40C05G3/80A01B79/02A01B79/00C05F1/005C05F5/00
Inventor 常大勇张在花孙明明王琳丁玮琳贾朝佩李恩广廖俊彦
Owner 烟台凯多海洋生物研究院有限公司
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