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Preparation method of ecological chelated straw fertilizer

A straw fertilizer, chelation technology, applied in organic fertilizers, fertilization devices, fertilizer mixtures, etc., can solve the problems of harming crops in the next season, difficult decay time, difficult farmers' application, etc., to achieve waste utilization, reduce mobility and biological efficiency. Effectiveness, the effect of increasing soil organic matter content

Active Publication Date: 2016-07-06
YANCHENG YOUPU ENVIRONMENTAL PROTECTION TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the amount of straw retting and returning to the field is very small, and it is difficult for farmers to accept and apply the straw to the field due to labor-consuming and time-consuming and the difficulty of cultivating the season after the straw is returned to the field. Pests and pathogens, direct return to the field will bring these diseases and insect pests into the soil, endangering the next season's crops

Method used

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Examples

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Effect test

preparation example Construction

[0016] The preparation method of the ecological chelated straw fertilizer of the present invention comprises the following steps: (a) fermenting the straw to obtain a fermentation mixture, (b) adding carbon disulfide to the fermentation mixture to react under alkaline conditions. By adding carbon disulfide to the fermentation mixture and reacting under alkaline conditions, the final product can not only be used for soil fertilization, but also can chelate heavy metal ions in the soil, especially the adsorption of cadmium ions, which realizes waste Utilization has the effect of environmental protection; and step (a) and step (b) are not mutually isolated steps, but are interrelated; in step (a), the straw is fermented to degrade cellulose and lignin, and is transformed into inorganic Nitrogen can slowly increase the nitrogen content in farmland, and at the same time release nitrogen free radicals to enhance the stability of heavy metal chelation. The prepared ecological chelate...

Embodiment 1

[0022] The present embodiment provides a kind of preparation method of ecological chelated straw fertilizer, it comprises the following steps:

[0023] (a) Fermenting the straw to obtain a fermentation mixture, specifically: collecting the straw, drying in the air, crushing to form fine particles with a particle size of about 3 cm, and then cooking for 2 hours; adding ligninase and fiber of the straw mass (dry weight) after cooling Sulfase (0.56CBU / g ligninase and 1FPU / g cellulase), placed in an airtight container and fermented at room temperature for 3 days to obtain a fermentation mixture;

[0024] (b) Take 1 kg of the fermentation mixture, then add 0.3 kg of sodium hydroxide and 22 g of carbon disulfide to it in sequence and react at 45° C. for 4 hours.

Embodiment 2

[0026] This embodiment provides a preparation method of ecological chelated straw fertilizer, the operation steps of which are basically the same as those in Example 1, the difference is: in step (b), before adding sodium hydroxide and carbon disulfide, the fermentation mixture is added Add organic amine to react. Specifically: take 1kg of fermentation mixture, add 16g of ethylenediamine to it, react at 90°C for 2.5 hours, then add 0.3kg of sodium hydroxide, 22g of carbon disulfide and react at 45°C for 4 hours.

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Abstract

The invention relates to a preparation method of an ecological chelated straw fertilizer. The preparation method comprises the following steps: (a) fermenting straws to obtain a fermented mixture; (b) adding carbon disulfide into the fermented mixture for reaction under an alkaline condition. The carbon disulfide is added into the fermented mixture for reaction under the alkaline condition, so that a final product can be used for both fertilizing soil and chelating heavy metal ions in the soil, particularly adsorbing cadmium ions; therefore, utilization of wastes is realized, and an effect of protecting the environment is achieved.

Description

technical field [0001] The invention relates to a preparation method of straw fertilizer, in particular to a preparation method of ecological chelated straw fertilizer. Background technique [0002] Crop straw contains a certain amount of plant nutrition. Traditionally, as a fertilizer source, it is often returned to the field by stacking, lapping, etc., or directly returned to the field to increase soil nutrients, improve soil physical properties, and improve soil fertility. However, at present, the amount of straw retting and returning to the field is very small, and it is difficult for farmers to accept and apply the straw to the field due to labor-consuming and time-consuming and the difficulty of cultivating the season after the straw is returned to the field. Pests and germs, returning directly to the field will bring these pests into the soil and harm the next season's crops. [0003] The current remediation of contaminated soil is mainly through the transfer, adsorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05F11/00C05G3/80
CPCC05F11/00C05G3/00C05G3/80Y02W30/40
Inventor 王文丰郭晓稚孙昌春
Owner YANCHENG YOUPU ENVIRONMENTAL PROTECTION TECH CO LTD
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