Soil improvement material and preparation method thereof

A soil improvement and bentonite technology, applied in the field of green and environmentally friendly soil improvement materials and their preparation, can solve problems such as poor health, secondary pollution, and residues, and achieve the effects of enhancing adsorption performance, reducing emissions, and weakening diffusion and leakage.

Inactive Publication Date: 2015-10-28
苏州中科慧盛生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, with the use of various pesticides during the growth of crops, various pesticides will remain in the soil, and the residual pesticides in the soil will also cause various negative effects on crops, such as reduced yields or inhalation into fruits. People eat this for a long time Fruit-like fruits may have adverse health effects
Existing soil improvement materials are more or less deficient. Although some soil improvement chemical materials degrade and dilute the pesticide residues in the soil, they also further bring secondary pollution

Method used

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  • Soil improvement material and preparation method thereof
  • Soil improvement material and preparation method thereof
  • Soil improvement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of a soil improving material, comprising the steps of:

[0026] Step 1, preparation of rice straw biochar:

[0027] Step A, cutting the rice stalks into small sections of about 5 cm;

[0028] Step B, put the small section of rice straw from step A into a carbonization furnace for carbonization treatment, the carbonization time is 1 hour, and the carbonization temperature is 400 degrees Celsius to produce rice straw biochar;

[0029] Step C, cooling the baked biochar, and sealing and packaging the cooled finished product.

[0030] In order to effectively reduce the emission of greenhouse gases and harmful gases, in the process of preparing rice straw biochar, the step B also includes a flue gas treatment step, and the flue gas treatment step includes setting There is a water cooling device, and the smoke exhaust pipe is connected with the sealed barrel, and the cooled smoke and tar are trapped in the sealed barrel.

[0031] A tail gas purification...

example 1

[0044] Example 1 and its effects:

[0045] In 2010, a 1,000-mu heavy metal-exceeding rice field near a mining area in Jiangxi Province was used as the experimental base. The original heavy metal cadmium and lead pollution of the experimental cultivated land was serious.

[0046]

[0047]

[0048] The area of ​​the experimental base is 1000 mu, and soil samples are randomly collected, and a control group and an experimental group are set up. Use the improved material and technical method of this patent to improve the cultivated land soil, apply 300 kg of improved material per mu each time, once every two months, and measure the cadmium and lead content in the soil after 12 months. The results show that: the improved soil The removal rate of cadmium in medium reaches 85%, and the removal rate of Cd reaches 65.9%. The improvement effect is very obvious.

example 2

[0049] Example 2 and its effects:

[0050] In Jurong, Jiangsu Province, rice straw bio-carbon-based soil improvement materials were used for 300 mu of strawberry fields, and 100 kg of improved materials were applied per mu per season. The test showed that the incidence of strawberry Verticillium wilt dropped from more than 60% to about 10%, improving strawberry The output is more than 30%, the amount of chemical fertilizer is reduced by 15-30%, and the quality of strawberries is significantly improved, with a net increase of 3000-5000 yuan / mu.

[0051] Effects on yield and growth of continuous cropping strawberry (Jurong, 2013)

[0052]

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Abstract

The invention relates to a soil improvement material and a preparation method thereof, and belongs to the technical field of environmental protection and soil improvement. The soil improvement material of the present invention is formed by mixing 50-75% by weight of rice straw biological carbon, 10-20% by weight of bentonite, and 15-30% by weight of coal humic acid. The present invention further provides the method for preparing the improvement material, wherein the preparation method comprises rice straw biological carbon preparation, mixing and crushing treatment, and fermentation. With the technical scheme of the present invention, the emission of greenhouse gas in the atmosphere can be significantly reduced, and characteristics of effective enhancement of adsorption property of polycyclic aromatic hydrocarbons in the soil, weakening of diffusion and leakage of pesticides and other pollutants, reduction of pesticide uptake in crops, reduction of pesticide accumulation in earthworms, and the like are provided.

Description

technical field [0001] The invention relates to the technical fields of environmental protection and soil improvement, in particular to a green and environment-friendly soil improvement material which reduces emissions of carbon dioxide, methane and the like and improves soil properties and a preparation method thereof. Background technique [0002] Rice straw is an important part of agricultural straw. my country is rich in rice straw resources, and returning straw to the field can increase the organic fertilizer of the soil. However, at present, soil returning to the field mainly uses methods such as burning straw or direct burial, and these methods have shortcomings. Among them, burning straw often produces a large amount of carbon dioxide emissions and causes serious pollution to the environment; Greenhouse gas emissions also have a negative impact on the environment. [0003] In addition, with the use of various pesticides during the growth of crops, various pesticides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B01J20/24C09K101/00
Inventor 夏金华
Owner 苏州中科慧盛生物科技有限公司
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