Preparing and application method of Arundo donax biological charcoal serving as nitrogenous fertilizer synergist

A nitrogen fertilizer synergist and application method technology, applied in the directions of application, fertilization device, fertilizer mixture, etc., can solve the problems of unreasonable agricultural management measures, waste of economy and resources, single utilization method, etc., and realize the utilization of reed bamboo resources. , the effect of promoting absorption and reducing soil leaching

Inactive Publication Date: 2012-10-03
青岛贝尔卡环境生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to unreasonable agricultural management measures, crops have low nitrogen utilization efficiency
Excessive use of nitrogen fertilizer and low utilization rate of nitrogen fertilizer generally bring about two main problems: one is to cause great waste of economy and resources
Second, serious environmental problems
At present, reed bamboo is generally used to make paper, the utilization method is single, and the economic value is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation and application method of Arundis biochar nitrogen fertilizer synergist are as follows, including two steps:

[0027] One, preparation method, comprises the following steps:

[0028] 1. Harvest the mature reed bamboo and cut it into small pieces of 2-5cm;

[0029] 2. Air-dry the above-mentioned reed bamboo section for later use;

[0030] 3. Pass the reed bamboo segment into an inert protective gas with a flow rate of 200-500mL / min;

[0031] 4. Heating the bamboo segment to 350-650°C at a heating rate of 1-20°C / min for carbonization;

[0032] 5. The heating time is 1 to 6 hours.

[0033] 6. After carbonization, under the protection of inert gas, cool to room temperature to obtain biochar.

[0034] 2. Application method, including the following steps:

[0035] 1. Crush the prepared biochar to 1-5mm particles;

[0036] 2. Sealed in a dry place;

[0037] 3. Apply to the farmland soil according to the mass ratio of biochar to soil of 0.1-8%, and mix we...

Embodiment 1

[0041] Using the above-ground stems of Arundos reeds as raw materials, remove the leaves from the above-ground stems of Arundis, cut into 2 cm sections, air-dry, and store for later use. Put the air-dried Arundis in a tube furnace, feed high-purity nitrogen at a rate of 300mL / min as a protective gas, raise the rate of 10°C / min to 500°C for carbonization for 2 hours, and cool naturally to room temperature under the protection of nitrogen . The soil was collected from a corn field in the suburb of Chengyang District, Qingdao City, Shandong Province. After the soil is recovered, clean up debris, grass roots and other sundries, air-dry, pass through a 2mm soil sieve, and mix the biochar crushed to 2mm with the soil evenly at a ratio of 2%. 3 / g bulk density into the leaching column. In order to study the effect of Phyllostachys reed biochar synergist on nitrogen utilization under the condition of high fertilization rate, ammonium nitrogen fertilizer was added to the soil accordi...

Embodiment 2

[0043]Use the above-ground stems of Arundos reeds as raw materials, remove the leaves from the above-ground stems of Arundos reeds, cut into small sections of 0.1-2cm×2-5cm, air-dry, and store for later use. Put the air-dried Arundis in a tube furnace, feed high-purity nitrogen at a rate of 300mL / min as a protective gas, raise the rate of 10°C / min to 400°C for carbonization for 2 hours, and cool naturally to room temperature under the protection of nitrogen . The soil was collected from a corn field in the suburb of Chengyang District, Qingdao City, Shandong Province. After the soil is recovered, clean up debris, grass roots and other sundries, air-dry, pass through a 2mm soil sieve, and mix the biochar crushed to 2mm with the soil evenly at a ratio of 5%. 3 / g bulk density into the leaching column. At the same time, nitrate nitrogen fertilizer was added to the soil in an amount of 400mgN / kg soil. Corn was planted in the soil column, and after the corn germinated, leaching ...

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Abstract

The invention provides a preparing and application method of an Arundo donax biological charcoal serving as a nitrogenous fertilizer synergist. The preparing and application method comprises the steps of: harvesting mature-stage Arundo donax, shearing into small segments of 2-5cm, and air-drying for later use; heating the Arundo donax segments to 350-650 DEG C at a heating rate of 1-20 DEG C/min under the protection of inert gas at a flow rate of 200-500mL/min for charring for 1-6h; after charring is finished, cooling to room temperature under the protection of inert gas; crushing prepared biological charcoal into particles of 1-5mm, sealing, and storing in a drying place for later use; and applying the crushed biological charcoal to agricultural soil at a ratio of 0.1-8%, and sufficiently mixing to be uniform, wherein the soil moisture content is kept at 60-80%. The preparing and application method is simple in operation, low in cost and significant in effect, and is suitable for the situation of China; and by using the method, the nitrogenous fertilizer absorption of the crop is promoted, the nitrogenous fertilizer loss is reduced and the nitrogenous fertilizer utilization efficiency of the crop is improved.

Description

technical field [0001] The invention relates to the field of synergistic utilization of agricultural nutrients, in particular to a method for preparing and applying a reed bamboo biochar nitrogen fertilizer synergist. Background technique [0002] Nitrogen is one of the nutrient elements necessary for the normal growth and development of plants, and it is also one of the most limited nutrient elements for agricultural production and ecosystem growth and development. At present, my country is the country with the largest consumption of chemical fertilizers in the world. However, due to unreasonable agricultural management measures, crops have a low utilization rate of nitrogen fertilizer. Excessive use of nitrogen fertilizer and low utilization rate of nitrogen fertilizer will generally bring about two main problems: one is to cause great waste of economy and resources. The second is to cause serious environmental problems. In the process of fertilizer production, a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
CPCY02P60/21Y02A40/22
Inventor 宿兴华
Owner 青岛贝尔卡环境生物工程有限公司
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