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Method for preparing biochar and improving carclazyte by utilizing mulberry or perennial jasmine branches

A technology of biochar and jasmine, applied in the direction of biofuels, chemical instruments and methods, applications, etc., can solve the problems of poor water and fertilizer retention performance, easy hardening, and low crop yield, so as to improve fertilizer utilization rate and soil pH value , the effect of increasing crop yield

Inactive Publication Date: 2020-08-25
GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] White pulp soil has poor plasticity, small soil particle size, poor water permeability, air permeability and fertilizer permeability, poor water and fertilizer retention performance, easy to harden in drought, easy to bond after heavy rain, poor drought and waterlogging resistance, and difficult for crops to grow and break. Absorption of water and fertilizer, low crop yield, poor quality of agricultural products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In March 2019, 2-year-old mulberry branches were trimmed, mulberry leaves were removed, dried in the sun until the water content was 30%, cut to 2.0cm, and stacked in a square cement tank. The front, rear, left, and bottom of the cement tank were brick structures It is hardened with cement, the top is completely open, the height in the tank is 2m, and the material stacking height is 1.6m. It is ignited and burned, and carbonized at a temperature of 80°C-90°C. During the carbonization process, water is continuously sprayed to keep the moisture content of the material at 48%-52. %, regularly stirred evenly, and the bottom of the material in the whole carbonization process was exhausted with an exhaust fan, and the power of the exhaust fan was 3KW.

[0028] Add 5% of dolomite powder to the obtained biochar according to the weight ratio, and stir evenly to obtain the compound soil improving agent.

[0029] On the white pulp soil of a farm in Shangsi County, Guangxi, the soi...

Embodiment 2

[0032] In March 2019, 2-year-old mulberry branches were trimmed, mulberry leaves were removed, dried in the sun until the water content was 30%, cut to 2.0cm, and stacked in a square cement tank. The front, rear, left, and bottom of the cement tank were brick structures It is hardened with cement, the top is completely open, the height in the tank is 2m, and the material stacking height is 1.6m. It is ignited and burned, and carbonized at a temperature of 80°C-90°C. During the carbonization process, water is continuously sprayed to keep the moisture content of the material at 48%-52. %, regularly stirred evenly, and the bottom of the material in the whole carbonization process was exhausted with an exhaust fan, and the power of the exhaust fan was 3KW.

[0033] Add 5% of dolomite powder to the obtained biochar according to the weight ratio, and stir evenly to obtain the compound soil improving agent.

[0034]On the white pulp soil of a farm in Shangsi County, Guangxi, the soil...

Embodiment 3

[0037] In March 2019, 2-year-old mulberry branches were trimmed, dried in the sun to a moisture content of 30%, and cut to 2.0 cm.

[0038] The obtained mulberry branches are added with 5% of dolomite powder according to the weight ratio, stirred evenly, and used as a soil improving agent.

[0039] On the white pulp soil of a farm in Shangsi County, Guangxi, the soil improvement test was carried out when it was sunny for many consecutive days and the field water holding capacity of the soil was 40%. 2 tons / mu, rake the surface evenly, plow (depth 30cm), rake the surface, and spread compound soil improvement agent 2 tons / mu, rake the surface evenly; Ridge and open deep trenches (30cm) to promote drainage.

[0040] The cabbage was planted on the white pulp soil after soil improvement. The results showed that compared with the control area without soil improvement, the soil in the soil improvement area became looser, and the bulk density increased from 1.30g / cm 3 Reduced to 1.26...

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Abstract

The invention discloses a method for preparing biochar from mulberry or perennial jasmine branches, which comprises the following steps: using mulberry or perennial jasmine branches as a raw material,drying the raw material in the sun, cutting, and carbonizing to obtain the product. According to the invention, Dolomite powder is added into the biochar to form the composite soil modifier, and thecomposite soil modifier can be used for improving carclazyte. Accordingly, the inventor further establishes a method for improving the carclazyte, and the method integrates the technical measures of deep ploughing and deep scarification, biochar returning to the field, acid soil modifier combined application, flood drainage and the like. Practical application shows that the invention is easy to operate, mulberry branches or perennial jasmine branches are rich in source, moderate in branch size, high in lignin content and good in cohesiveness with carclazyte broken soil, and the carclazyte soilimprovement and crop yield increase effects are remarkable.

Description

technical field [0001] The invention belongs to the technical field of biochar preparation and soil improvement, and in particular relates to a method for preparing biochar by using mulberry or perennial jasmine branches and improving white pulp soil. Background technique [0002] The planting area of ​​mulberry or jasmine in our country is very large, and they need to be pruned every year, resulting in a large number of branches, which are piled up in large numbers in the fields, resulting in pollution and waste of resources. [0003] After searching, there are many reports on the preparation of biochar and its application in soil, but there is no report on the use of mulberry or jasmine branches as biochar raw materials. [0004] In the Chinese patent application "soil improvement material and its preparation method" (patent application number 201410158389.2 publication date 2015.10.28), a soil improvement material is disclosed, which consists of 50%-75% by weight of rice ...

Claims

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Application Information

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IPC IPC(8): C10B53/02C09K17/06C09K17/02C09K109/00
CPCC09K17/02C09K17/06C09K2109/00C10B53/02Y02E50/10Y02P20/133
Inventor 苏天明何铁光秦芳李嘉维苏利荣李琴曾成城李忠义朱桂宁张野王瑾王吉平谢育利曾向阳
Owner GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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