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A southern red soil improver based on mine tailings and its application method

A soil improver and improver technology, applied in the direction of chemical instruments and methods, applications, and other chemical processes, can solve the problems of low production cost, increase crop yield, etc., to increase the ability to adjust heat, increase the content range, The effect of increasing the absorption of nutrients

Active Publication Date: 2020-06-16
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there is no domestic use of industrial waste such as tailings in rare earth mining areas mixed with zeolite, palygorskite, shuangfei powder, and quinine, and adding crop straw to prepare biochar to neutralize soil acidity and increase the porosity of red soil. Technical records of soil amendments that supplement soil nutrients, increase crop yields, and have low production costs

Method used

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  • A southern red soil improver based on mine tailings and its application method

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Effect test

Embodiment 1

[0030] For the target red soil pH<5, in this plan, the mass fraction of the mixture of Shuangfei powder and quinine is 17%, and the mass fraction of biochar is 35%; for the target red soil porosity in the range of 30%~39%, the soil conditioner is selected The mass fraction of tailings is 30%, and the mass fraction of the mixture of zeolite and palygorskite is controlled at 18%. Then, the Southern Red Soil Improver based on mine tailings is composed of the following components in terms of mass fraction: 30% rare earth mine tailings, 18% mixture of zeolite and palygorskite, 17% shuangfei powder and quinine Mixture, 35% biochar, the preparation method is as follows: according to the total weight of 100kg of improver, the washed and dried 55kg of wheat or corn stalks are shredded, put into a pulverizer for preliminary crushing, and the crushed The straw was passed through a 9-mesh sieve, and the sieved straw was placed in a carbonization furnace for pyrolysis and carbonization at ...

Embodiment 2

[0034]For the target red soil pH<5, in this plan, the mass fraction of the mixture of Shuangfei powder and quinine is 18%, and the mass fraction of biochar is 40%; for the target red soil porosity in the range of 30%~39%, the soil conditioner The mass fraction of the tailings is 25%, and this scheme controls the mass fraction of the mixture of zeolite and palygorskite at 20%. Then, the southern red soil amendment based on mine tailings, according to the mass fraction, consists of the following components: 25% rare earth mine tailings, 20% mixture of zeolite and palygorskite, 18% shuangfei powder and quinine Mixture, 40% biochar, the preparation method is as follows: according to the total weight of 100kg of improver, the washed and dried 60kg of wheat or corn stalks are shredded, put into a grinder for preliminary crushing, and the crushed Straw was passed through a 10-mesh sieve, and the sieved straw was placed in a carbonization furnace for pyrolysis and carbonization at a t...

Embodiment 3

[0037] For the target red soil pH<5, in this plan, the mass fraction of the mixture of Shuangfei powder and quinine is 20%, and the mass fraction of biochar is 35%; for the target red soil porosity in the range of 30%~39%, the middle tail The mass fraction of sand is 25%, and this scheme controls the mass fraction of the mixture of zeolite and palygorskite at 25%. Then, the southern red soil modifier based on mine tailings, according to the mass fraction, consists of the following components: 25% rare earth mine tailings, 25% mixture of zeolite and palygorskite, 20% shuangfei powder and quinine Mixture, 35% biochar, the preparation method is as follows: according to the total weight of 100kg of improver, the washed and dried 55kg of wheat or corn stalks are shredded, put into a pulverizer for preliminary crushing, and the crushed The straw was passed through an 8-mesh sieve, and the sieved straw was placed in a carbonization furnace for pyrolysis and carbonization at a tempera...

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Abstract

The invention relates to a southern red soil improver based on mine tailings and an application method of the southern red soil improver, which belongs to the technical field of ecological environmentrestoration. The southern red soil improver is prepared by uniformly mixing the following substances by weight percent: 25 to 35 percent of rare-earth mine tailings, 15 to 25 percent of zeolite and palygorskite mixture, 15 to 20 percent of calcium carbonate powder and quinamicine mixture, and 30 to 40 percent of charcoal. The ratio and use amount of components in the improver are adjusted according to porosity and pH of the soil, so that the red soil improver provided by the invention can effectively solve the problems of low crop yield and poor quality caused by low soil texture, low pH value, concentrated aluminum oxides, low mineral nutrients, and low organic carbon content in red soil regions of China, and also ensures the security of the agricultural production in the acidified red soil region.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and relates to a southern red soil improver based on mine tailings and a use method thereof. Background technique [0002] The area of ​​red soil area in southern my country is 2.18 million hm 2 , accounting for about 22.7% of the country's land area. Most of the red soil is distributed on the gentle slopes of mountainous areas and mid-mountainous areas. The red soil area is an important production base of cash crops and grain crops in China, and occupies a pivotal position in agricultural development. However, the red soil developed under hot and humid conditions has a heavy texture, strong acidity, enrichment of aluminum oxides, and low mineral nutrients and organic carbon content. In recent years, people have used chemical nitrogen fertilizers in large quantities in pursuit of economic benefits, and acid rain deposition has led to increased acidification of red soil. Due to the lon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/06C05G3/80C09K109/00
CPCC05D3/02C05G3/80C09K17/06C09K2109/00C05D9/00C05D9/02C05G1/00
Inventor 吴代赦李建龙范博况琴
Owner NANCHANG UNIV
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