Acid soil conditioner based on tropical agricultural by-products and preparation method thereof

A technology of agricultural by-products and acidic soil, which is applied in the field of acidic soil conditioner and its preparation, which can solve the problems of direct utilization of shell powder, easy loss with rainwater, strong soil erosion and low utilization rate of organic materials, etc., to improve soil Aeration status, reducing nutrient leaching loss, and increasing the effect of soil aggregates

Active Publication Date: 2020-09-11
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are still some problems in the research on the comprehensive utilization of agricultural by-products in the above-mentioned areas. For example, shell powder is mainly composed of calcium carbonate and a small amount of organic matter, which is an alkaline material and has the potential to improve acidic soil. The erosion effect is relatively large, and the direct use of shell powder is easy to be lost with rainwater, the improvement effect is not ideal, and it is not conducive to the improvement of soil structure; the microbial activity in the soil is strong, and the applied organic fertilizer is partly fixed by the soil before it is effectively used. , part of it is lost with rainwater, coupled with high-intensity microbial activities, resulting in low utilization of organic materials, resulting in waste of resources and environmental pollution

Method used

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  • Acid soil conditioner based on tropical agricultural by-products and preparation method thereof
  • Acid soil conditioner based on tropical agricultural by-products and preparation method thereof
  • Acid soil conditioner based on tropical agricultural by-products and preparation method thereof

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preparation example Construction

[0027] In some preferred embodiments, the preparation method of biochar includes the following steps: chop the raw materials for biochar production into small pieces with a length of 1-5 cm, dry them and place them in a muffle furnace at 400-600 °C Cracking at low temperature for 3-5 hours, cooling down, grinding, that is.

[0028] In some preferred embodiments, the mesh of the biochar is ≤20 mesh; further preferably, the mesh of the biochar is selected from one of 20 mesh, 18 mesh, 16 mesh and 10 mesh. The inventor found in the research that controlling the mesh number of the biochar not to be higher than 20 mesh can ensure the easy processing of the biochar and the convenient application of the conditioner, while retaining the microporous structure in the biochar, so that the soil conditioner has excellent Adsorption properties.

[0029] The method for measuring the mesh number herein can be any one known to those skilled in the art, such as sieving method.

[0030] alka...

Embodiment 1

[0052] Example 1 provides an acidic soil conditioner based on tropical agricultural by-products. In parts by weight, its preparation raw materials include 55 parts of biochar, 45 parts of alkaline materials, 2 parts of nano-titanium dioxide, and 150 parts of glue.

[0053] The biochar is a mixture of pineapple leaf biochar, banana stalk biochar and coconut bran biochar with a weight ratio of 2:2.5:1.

[0054] The alkaline material is a mixture of egg shell powder and oyster shell powder with a weight ratio of 2:2.5.

[0055] The nano-titanium dioxide is anatase with a particle size of 15nm.

[0056] The glue is an aqueous solution of sodium alginate, wherein the weight ratio of sodium alginate to water is 0.5:200.

[0057] This example also provides the preparation method of above-mentioned acidic soil conditioner, comprises the following steps:

[0058] Step (1): chop pineapple leaves, banana stalks, and coconut peat into 2cm lengths, and dry them for later use;

[0059] S...

Embodiment 2

[0066] Example 2 provides an acidic soil conditioner based on tropical agricultural by-products. In parts by weight, its preparation raw materials include 55 parts of biochar, 55 parts of alkaline materials, 2 parts of nano-titanium dioxide, and 150 parts of glue.

[0067] The biochar is a mixture of pineapple pomace biochar, bagasse biochar and coconut bran biochar with a weight ratio of 1.5:2:2.

[0068] The alkaline material is a mixture of egg shell powder, pearl shell powder and sea rainbow shell powder, with a weight ratio of 2.5:2:1.

[0069] The nano-titanium dioxide is anatase with a particle size of 15nm.

[0070] The glue is an aqueous solution of sodium alginate, wherein the weight ratio of sodium alginate to water is 0.5:200.

[0071] This example also provides the preparation method of above-mentioned acidic soil conditioner, comprises the following steps:

[0072] Step (1): chop pineapple peel, bagasse, and coconut peat into 2cm lengths, and dry for later use;...

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Abstract

The invention discloses an acid soil conditioner based on tropical agricultural by-products. The acid soil conditioner is prepared from the following raw materials in parts by weight: 20-70 parts of biochar, 20-80 parts of an alkaline material, 1-5 parts of nano oxide and 120-180 parts of a glue solution. According to the soil conditioner, the sodium alginate glue solution is used, so that the powdery alkaline material is compounded with the granular charcoal, and runoff and infiltration of nutrients and alkaline materials along with rainwater are reduced; with the degradation of the glue, thecomposite amendment material can continuously and effectively neutralize soil acidity, improve soil structure and increase soil organic matter content, so that ideas and ways are provided for resource utilization of tropical agricultural by-products and soil fertility improvement in a hot area.

Description

technical field [0001] The invention relates to the technical field of soil improvement and restoration, in particular to an acidic soil conditioner based on tropical agricultural by-products and a preparation method thereof. Background technique [0002] my country's Guangdong Province, Hainan Province, and southern Yunnan Province all have a tropical climate. Due to climatic conditions such as sufficient sunshine, abundant water sources, and suitable temperatures, these areas produce a wide variety of tropical fruits, such as pineapples, bananas, jackfruit, and sugarcane. After harvesting, a large amount of agricultural by-products will be produced, and the recycling rate of such resources is extremely low. Take pineapple leaves as an example, which has a waxy layer on the surface, which makes it difficult to quickly degrade and integrate with the soil, so it cannot be used like rice and corn stalks. Agricultural and sideline products can be directly turned over and returned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 宋书会杨子明焦静李普旺杨艳刘运浩何祖宇周闯王超吕明哲
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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