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Inorganic-organic composite soil conditioner and application thereof

A soil conditioner and organic technology, which is applied in the field of inorganic-organic composite soil conditioner preparation, can solve the problems of single effect, difficult promotion, inconvenient spreading, etc., to achieve enhanced self-purification ability, good repair effect, and improved soil structure. Effect

Active Publication Date: 2018-01-19
AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the existing farmland soil remediation agent is a powder, it is inconvenient to spread, the effect is single, and the problem of difficulty in popularization; the purpose of the present invention is to provide an inorganic-organic composite soil conditioner (the present invention is also referred to as soil conditioner) , aiming to provide a granular farmland soil remediation agent that is conducive to popularization and has an excellent heavy metal treatment effect through the compounding idea of ​​materials and material shapes

Method used

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Experimental program
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Effect test

Embodiment 1

[0062] Mix powdery raw materials: 30kg medical stone (150-200 mesh), 15kg sepiolite (150-200 mesh), 10kg slaked lime (150-200 mesh), 10kg iron powder (10-30μm), mix the particles Shaped raw materials: 10kg biochar (1-1.5mm), 15kg potassium humate (1-1.5mm), 10kg calcium magnesium phosphorus compound fertilizer (1.5-2mm) mix evenly, and then spray water into the granular mixture ( The amount of water is calculated by 4% of the total mass) while spraying the powdery mixture, and mixing evenly to obtain 100kg granular inorganic-organic composite soil conditioner.

Embodiment 2

[0064] Mix powdery raw materials: 20kg medical stone (150-200 mesh), 20kg sepiolite (150-200 mesh), 20kg slaked lime (150-200 mesh), 10kg iron powder (10-30μm), mix the particles Shaped raw materials: 10kg biochar (1-1.5mm), 10kg potassium humate (1-1.5mm), 10kg calcium magnesium phosphorus compound fertilizer (1.5-2mm) mix evenly, and then spray water into the granular mixture ( The amount of water is calculated by 4% of the total mass) while spraying the powdery mixture, and mixing evenly to obtain 100kg granular inorganic-organic composite soil conditioner.

Embodiment 3

[0066] Mix powdery raw materials: 40kg medical stone (150-200 mesh), 10kg sepiolite (150-200 mesh), 10kg slaked lime (150-200 mesh), 10kg iron powder (10-30μm), mix the particles Shaped raw materials: 10kg biochar (1-1.5mm), 10kg potassium humate (1-1.5mm), 10kg calcium magnesium phosphorus compound fertilizer (1.5-2mm) mix evenly, and then spray water into the granular mixture ( The amount of water is calculated by 4% of the total mass) while spraying the powdery mixture, and mixing evenly to obtain 100kg granular inorganic-organic composite soil conditioner.

[0067] The soil conditioner that embodiment 1, embodiment 2, embodiment 3 are made adds in 10kg cadmium polluted farmland soil by the mass fraction of 0.15%, mixes and leaves standstill after 5 days and carries out rice pot test, each process repeats three times, simultaneously Set up 3 blank controls (CK). The cadmium content of the rice was detected after the rice was mature, and the effect comparison is shown in Ta...

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Abstract

The invention discloses an inorganic-organic composite soil conditioner. The inorganic-organic composite soil conditioner comprises medical stone, sepiolite, a calcium source, iron powder, biologicalcarbon, humate and a calcium-magnesium-phosphorus compound fertilizer, wherein the calcium source is oxide or hydroxide of calcium; the iron powder has a particle size of 10 to 40 [mu]m; the particlesizes of the medical stone, the sepiolite and the calcium source are 150 to 400 meshes; and the particle sizes of the biological carbon, the calcium-magnesium-phosphorus compound fertilizer and the humate are 1 to 2 mm. The invention also provides a preparation method and an application for the soil conditioner. Through a great amount of studies, the inventor of the invention finds that the inorganic-organic composite soil conditioner with particle morphology can be prepared without the need of an auxiliary granulating additive by compounding components with particle size ranges. The inorganic-organic composite soil conditioner provided by the invention has simple preparation method, is convenient to apply, can repair and treat heavy metal contaminated soil, guarantees the safety of grain,can improve the structure of soil, improves the quality of the grain, and facilitates application and acceptance.

Description

technical field [0001] The invention relates to the treatment and improvement technology of heavy metal polluted farmland soil, in particular to the preparation and application of an inorganic-organic composite soil conditioner. Background technique [0002] Heavy metal pollution in farmland soil has become a serious environmental problem that threatens my country's food safety production, and it has reached a level that cannot be ignored. In April 2014, the country started the restoration and treatment of heavy metal-contaminated cultivated land. After research, pilot and demonstration work in recent years, a large number of soil conditioner products for the restoration of heavy metal-contaminated cultivated land have emerged, but most of the products are powders. For example: the Chinese patent document with the publication number CN 105131961 A discloses a modifier for cadmium-contaminated soil, the disclosed components, the particle size of the medical stone is 110-140 m...

Claims

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Application Information

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IPC IPC(8): C09K17/40C05G3/04A01B79/02C09K101/00C09K109/00C05G3/80
Inventor 刘晓月史学峰刘羽翼邵乐张燕
Owner AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD
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