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Preparation method of collagen gel/bentonite double coated slow-release compound fertilizer

A collagen, double-layer coating technology, applied in layered/coated fertilizers, fertilizer mixtures, chemical instruments and methods, etc., can solve the problems of low utilization rate of fertilizers, environmental pollution, waste of resources, etc., to avoid burning seedlings , to avoid the loss of fertilizer, no residual effect

Active Publication Date: 2017-06-13
CHINA THREE GORGES UNIV
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Problems solved by technology

The low utilization rate of fertilizers not only causes a huge waste of resources, but also causes serious pollution to the environment on which human beings depend.

Method used

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  • Preparation method of collagen gel/bentonite double coated slow-release compound fertilizer
  • Preparation method of collagen gel/bentonite double coated slow-release compound fertilizer

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Embodiment 1

[0024] A collagen gel / bentonite double-layer coated slow-release compound fertilizer is composed of fertilizer granules and a gel inner layer and an outer layer wrapped on the surface of the fertilizer granules, and the granule fertilizer is N:P 2 o 5 : K 2 O is the compound fertilizer of 15: 6: 9, the constituent materials of the inner layer gel include pigskin, pepsin, glacial acetic acid, citric acid, absolute ethanol, distilled water; the outer layer wrapping is the adsorption mineral bentonite .

[0025] A preparation method of a double-layer coated slow-release compound fertilizer, the method steps are as follows:

[0026] Preparation of collagen gel:

[0027] (1) After washing and depilating 10 parts of fresh pigskin, chop them up, soak them in absolute ethanol and glacial acetic acid for degreasing, add 5.5 parts of pepsin and 0.52 parts of acetic acid solution with pH=2.5, seal with plastic wrap, and put them in the After being treated in a refrigerator at 4°C for...

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Abstract

The invention discloses collagen gel / bentonite double coated slow-release compound fertilizer and a preparation method thereof. The collagen gel / bentonite double coated slow-release compound fertilizer is prepared by taking granular compound fertilizer as an inner core, taking gel formed from collagen extracted from pigskin as an inner coating material and taking absorptive mineral bentonite as an outer wrappage. According to the double coated slow-release compound fertilizer, the problems of optimization conditions for preparing a nutrient-preserving coating agent from the collagen gel, preparation technology and parameters of the slow-release fertilizer and evaluation of the slow-release effect of the coated slow-release fertilizer are solved; the preparation technology of the coated fertilizer is simple; raw materials of a coating agent are from organisms, can be completely biodegraded, and are environment-friendly and free of secondary pollution; and the environmental pollution from agricultural production is reduced and relieved while the utilization rate of the fertilizer effect is improved.

Description

technical field [0001] The invention relates to the technical field of slow-release fertilizers, in particular to a collagen gel-coated slow-release fertilizer and a preparation method thereof. Background technique [0002] Fertilizer is one of the main means of production in agriculture. my country's chemical fertilizer consumption accounts for about 20-30% of the world's total chemical fertilizer consumption, ranking first in the world, but the average seasonal utilization rate of nitrogen fertilizer in my country is only 30-35%. The low utilization rate of fertilizers not only causes a huge waste of resources, but also causes serious pollution to the environment on which human beings depend. Slow and controlled release fertilizer is a physical and chemical high-tech product integrating formula fertilization and controlled release technology. It can not only effectively improve fertilizer utilization rate, reduce environmental pollution, but also meet the actual needs of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C12P21/06C07K14/78
CPCC05G5/30C07K14/78C12P21/06
Inventor 黄应平邓小婵方艳芬阮长城
Owner CHINA THREE GORGES UNIV
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