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Preparation method of loss-control fertilizer taking rice straws as raw material

A technology for rice straw and fertilizer loss control, applied in the field of fertilizer loss control, can solve problems such as high price and environmental risks, and achieve the effects of controlling loss, improving crop quality and low cost

Inactive Publication Date: 2017-11-24
CHINA NAT RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These chemical-based materials are expensive, and undecomposed or decomposed monomers in the soil may sometimes bring environmental risks. How to prepare safe, efficient and environmentally friendly loss-controlling fertilizers has become an urgent problem to be solved

Method used

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  • Preparation method of loss-control fertilizer taking rice straws as raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pretreatment of rice straw to prepare rice straw powder: the rice straw is naturally air-dried and then cut by a cutting machine. The length of the processed rice straw raw material is less than 3cm, and the moisture content is controlled at less than 15%. Wash it with distilled water, boil it in boiling water for 3 hours, and dry it in an oven. Pulverize with a universal pulverizer to obtain straw powder with a particle size of less than 180 μm;

[0021] (2) Preparation of rice straw lignin and cellulose: Weigh the rice straw powder prepared in step (1), add it to a clean Erlenmeyer flask, then slowly add acetic acid-ethanol mixed organic solvent to the Erlenmeyer flask, the rice straw The solid-to-liquid mass ratio of powder and acetic acid-ethanol mixed organic solvent is 1:2. After soaking for 50 minutes, heat to 95°C with a heating mantle and react for 3.5 hours. After the reaction is completed and cooled to room temperature, the Erlenmeyer flask and the filte...

Embodiment 2

[0028](1) Pretreatment of rice straw to prepare rice straw powder: the rice straw is naturally air-dried and then cut by a cutting machine. The length of the processed rice straw raw material is less than 3cm, and the moisture content is controlled at less than 15%. Wash it with distilled water, boil it in boiling water for 4 hours, and dry it in an oven. Pulverize with a universal pulverizer to obtain straw powder with a particle size of less than 180 μm;

[0029] (2) Preparation of rice straw lignin and cellulose: Weigh the rice straw powder prepared in step (1), add it to a clean Erlenmeyer flask, then slowly add acetic acid-ethanol mixed organic solvent to the Erlenmeyer flask, the rice straw The solid-to-liquid mass ratio of powder and acetic acid-ethanol mixed organic solvent is 1:3. After soaking for 60 minutes, heat to 95°C with a heating mantle and react for 3 hours. After the reaction is completed and cooled to room temperature, the Erlenmeyer flask and the filter r...

Embodiment 3

[0036] (1) Field experiment design

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Abstract

The invention relates to a loss-control fertilizer taking rice straws as a raw material, a preparation method and an application thereof. The preparation method comprises the following steps of: preparing rice straw powder, preparing rice straw lignin and cellulose, preparing lignin nano-functional carbon, preparing a cellulose flocculant, and preparing a nitrogen fertilizer loss-control agent and a compound loss-control fertilizer. The loss-control fertilizer prepared by the method not only can reduce or control loss of fertilizer nutrients, but also can improve the ecological environment of rhizosphere soil of plants and promote balanced absorption of nutrients by the plants. Under the circumstance of reduce chemical fertilizer application, the biomass of the crops can be increased and the quality of the crops can be improved. The method has the advantages of being low in cost, high in efficiency, environment-friendly, convenient to use, easy to process and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to a loss-controlling fertilizer, in particular to a loss-controlling fertilizer with rice straw as a raw material, a preparation method and application thereof. Background technique [0002] In the 1980s, developed countries also caused serious agricultural non-point source pollution problems due to the excessive application of chemical fertilizers. Through the implementation of nutrient management programs such as total nitrogen and phosphorus control, organic nutrient substitution, and limited fertilizer application in the entire watershed, combined with fertilizer selection, improvement of fertilization methods, and timely fertilization to reduce nitrogen and phosphorus emissions from paddy fields, the problem of excessive chemical fertilizer application has been greatly reduced. changed. While significantly reducing the amount of nitrogen and phosphorus fertilizers, adopt technology integration and policy innovation to impro...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05C3/00C05C9/00C05G3/00C05G3/80C05G3/90C05C11/00C05F11/00C05F11/02Y02P60/21
Inventor 张均华金千瑜赵夫涛朱练峰曹小闯禹盛苗
Owner CHINA NAT RICE RES INST
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