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Waste-free and full-utilization method for preparing foliar fertilizer by using phosphorus-potassium method

A foliar fertilizer, phosphorus and potassium technology, applied in the field of foliar fertilizer preparation by phosphorus and potassium method, can solve pollution and other problems, achieve the effect of increasing NPK content, solving industrial problems, and simple operation

Inactive Publication Date: 2019-01-11
威海迪普森生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a method for preparing foliage fertilizer by using the phosphorus and potassium method without waste and full utilization, which can not only realize the full utilization of shrimp shells, but also solve the industrial problem of serious pollution in the prior art due to its zero-emission and pollution-free process characteristics , has a good role in promoting the sustainable development of chitosan oligosaccharide and foliar fertilizer production industry

Method used

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  • Waste-free and full-utilization method for preparing foliar fertilizer by using phosphorus-potassium method
  • Waste-free and full-utilization method for preparing foliar fertilizer by using phosphorus-potassium method
  • Waste-free and full-utilization method for preparing foliar fertilizer by using phosphorus-potassium method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing foliar fertilizers by using the phosphorus and potassium method without waste, such as figure 1 shown, including the following steps:

[0048] (1) extract chitin:

[0049] Shrimp shells were dried and crushed to 100 mesh, 100 g was taken, and 1 L of phosphoric acid solution with a mass concentration of 4% was added according to the material ratio of 1:10, reacted at room temperature for 30 minutes, and centrifuged at 4800 r / min for 15 minutes to obtain supernatant 1 and precipitate 1;

[0050] Add 1L of potassium hydroxide solution with a mass concentration of 4% in the precipitation 1 according to the material ratio of 1:10, react at 70°C for 60 minutes, and centrifuge at 4800r / min for 15 minutes to obtain the supernatant 2 and chitin;

[0051]The chitin was dried, and the supernatant liquid 1 and the supernatant liquid 2 were mixed uniformly at a volume ratio of 1:1 to obtain a waste liquid mixture.

[0052] (2) prepare chitosan:

[0053] Tak...

Embodiment 2

[0069] (1) extract chitin:

[0070] Shrimp shells were dried and crushed to 100 mesh, 100 g was taken, and 600 mL of phosphoric acid solution with a mass concentration of 3% was added according to the material ratio of 1:6, reacted at room temperature for 30 min, and centrifuged at 4800 r / min for 15 min to obtain supernatant 1 and precipitate 1;

[0071] Add 600mL of potassium hydroxide solution with a mass concentration of 3% in precipitation 1 according to the material ratio of 1:6, react at 70°C for 30 minutes, and centrifuge at 4800r / min for 15 minutes to obtain supernatant 2 and chitin;

[0072] The chitin was dried, and the supernatant liquid 1 and the supernatant liquid 2 were mixed uniformly at a volume ratio of 1:1 to obtain a waste liquid mixture.

[0073] (2) prepare chitosan:

[0074] Take 1g of dried chitin, add 15mL of potassium hydroxide solution with a mass fraction of 45% according to the material ratio of 1:15, react with microwave at 600W for 8min, and cent...

Embodiment 3

[0090] Dilute the foliage fertilizer obtained in Examples 1 and 2 by 200 and 400 times respectively, spray cucumber seedlings, spray once every 5 days, and apply 2 times in total, manage normally after spraying, harvest and weigh after maturity . As shown in Table 3, compared with the application of foliar fertilizers sold in the market, the foliar fertilizers in Examples 1 and 2 can effectively increase the cucumber yield.

[0091] Table 3. Effect of foliar fertilizer application

[0092]

[0093]

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Abstract

The invention discloses a waste-free and full-utilization method for preparing a foliar fertilizer by using a phosphorus-potassium method, comprising the following steps: (1) extracting chitin; (2) preparing chitosan; (3) preparing chitosan oligosaccharide by using chitosan; (4) using a waste liquid mixture for microbial fermentation of soybean meal, and extracting a fermentation product after fermentation; and (5) mixing the fermentation product with the chitosan solution, and chelating the mixture with trace meter to obtain a foliar fertilizer. According to the method, by recovering the waste liquid in the process of preparing chitosan oligosaccharide from shrimp shell and mixing with soybean meal for fermenting, the content of the fermentation product NPK can be increased; and the fermentation product is compounded with chitosan oligosaccharide and trace metal to obtain the foliar fertilizer, which can improve the plant growth-promoting effect. The method is simple to operate, no waste liquid, waste gas or waste solid is discharged, and full utilization of shrimp shell is realized.

Description

technical field [0001] The invention relates to the technical field of fertilizers, and more specifically relates to a method for preparing foliar fertilizers by using the phosphorus and potassium method without waste. Background technique [0002] The main components of shrimp shell are protein, inorganic salt and chitin, and chitosan can be obtained after deacetylation of chitin. The degraded oligosaccharides of chitosan are chitosan oligosaccharides. Oligochitosan has strong water solubility, broad-spectrum bacteriostasis, and can induce plant disease resistance; however, its application function in agriculture is single, and its use alone cannot meet the nutritional requirements of plants in each growth period. It needs to be combined with N, P It is used after compounding with K element. [0003] In traditional industrial production, desalination of shrimp shells with hydrochloric acid, deproteinization and deacetylation with sodium hydroxide are mainly used, and chit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00C05G3/00
CPCC05B7/00C05F17/00C05G3/00C05G5/23C05D1/02C05D5/00C05D9/02C05F1/005C05F5/002C05F11/00C05F11/08Y02W30/40
Inventor 牟海津朱琳付晓丹
Owner 威海迪普森生物科技有限公司
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