Method for producing acid soil modifier by using agricultural waste

A technology for agricultural waste and acidic soil, applied in the field of producing acidic soil conditioner, can solve the problems of easy calcification of effective nutrients, damage to soil aggregate structure, adverse effects on soil, etc., and achieves low product cost, improved soil aggregate structure, and improved Effects of soil conditions and microflora

Inactive Publication Date: 2013-11-20
QIONGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] People are accustomed to using lime to improve acidic soil. Applying lime is a more effective and classic method to improve acidic soil and eliminate aluminum toxicity, but there are many shortcomings: one is that it will make the soil harden and the soil quality will deteriorate; the other is that it is effective Nutrients are prone to calcification, resulting in waste of fertilizers; the third is to destroy the aggr

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  • Method for producing acid soil modifier by using agricultural waste

Examples

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Example Embodiment

[0015] Example 1

[0016] The rice straw is crushed into powder with a diameter of less than 2mm, and 60% of it is heated to 300°C under the condition of isolating air for 4 hours to obtain biomass charcoal powder; the above biomass charcoal powder and the remaining 40% rice straw powder , Together with the above two substances, 10% of the total volume of limestone powder (passed through a 40-mesh sieve), mixed, and stirred evenly. Apply this product to improve acidic soil, the application rate is 200-500kg per mu.

Example Embodiment

[0017] Example 2

[0018] The corn stalks are crushed into powder with a diameter of less than 2mm, and 50% of them are heated to 400°C under the condition of isolating air for 3 hours to obtain biomass charcoal powder; the above biomass charcoal powder and the remaining 50% corn stalk powder , Together with the limestone powder (passing 40 mesh sieve) of 20% of the total volume of the two substances mentioned above, mix and stir evenly to obtain. Apply this product to improve acidic soil, the application rate is 200-300kg per mu.

Example Embodiment

[0019] Example 3

[0020] The dry cow dung is crushed into powder with a diameter of less than 2mm, and 70% of it is heated to 600°C under the condition of isolating air for 2.5 hours to obtain biomass charcoal powder; the above biomass charcoal powder and the remaining 30% are dried The cow dung powder is mixed with 50% limestone powder (passed through a 40-mesh sieve) of the total volume of the above two substances, and the mixture is evenly stirred. Apply this product to improve acidic soil, the application rate is 50-150kg per mu.

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Abstract

The invention relates to a method for producing an acid soil modifier by using agricultural waste. The method comprises: crushing agricultural waste, and heating one part of the crushed agricultural waste in the absence of air to obtain biomass carbon powder; and mixing the biomass carbon powder, the other part of the crushed material, and limestone powder, and uniformly stirring to obtain the finished product. With application of 50-500 kg of the soil modifier on per mu of soil, soil acidity can be effectively reduced, physical and chemical properties of soil can be improved, and economic values of crops can be increased. In addition, the acid soil modifier has characteristics of wide raw material source, low product cost, simple production process, no toxicity and no harm, is a green soil modifier, and has good ecological and social benefits.

Description

technical field [0001] The invention relates to a method for producing an acidic soil conditioner by using agricultural waste, and belongs to the field of agricultural technology or the technical field of agricultural waste utilization. Background technique [0002] Soil acidification is a process in which the concentration of protons in the soil gradually increases. Soil acidification can be caused by natural or human factors. Natural factors such as soil parent material itself is acidic, high temperature and rainy environmental conditions, acidic substances produced by plant roots or soil microbial metabolic activities; human factors such as large-scale application of chemical fertilizers, acid rain, etc. my country has about 200,000 km 2 The pH of the soil is less than 5.0, showing serious acidification. Soil acidification has a great impact on the planted crops, which will inhibit the development of crop roots, resulting in the obstruction of calcium, magnesium, potas...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00C09K109/00
Inventor 赵牧秋史云峰
Owner QIONGZHOU UNIVERSITY
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