Mixed type soil conditioner and method for preparing same

A soil conditioner and mixed technology, which is applied in the field of mixed soil conditioner and its preparation, can solve the problems of heavy metal pollution remediation and improvement technology is still rare, and the improvement agent progress is slow, so as to improve the soil quality of fertilization soil, The effect of reducing the content of heavy metals and improving the structure of soil aggregates

Inactive Publication Date: 2017-07-28
AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are not many technologies for remediation and improvement of heavy metal pollution in farmland beyond the standard that really bring the passivator from the laboratory to the field, and the progress in the industrialization of the improver is also very slow.

Method used

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  • Mixed type soil conditioner and method for preparing same
  • Mixed type soil conditioner and method for preparing same
  • Mixed type soil conditioner and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figures 1 to 2As shown, a quenching device for quenching calcined shell powder includes a U-shaped treatment box 4 composed of a feed tank 1, a quenching zone 2 and a discharge channel 3, and a hopper 6 with a lifting rod 5. A stirring device 7 is also installed on the side wall of the hopper 6; a feed control valve 8 is provided on the feed tank 1, and a box cover 9 is provided at the upper end of the discharge channel 3; a U-shaped processing box 4 quenching zone 2 A pool 10 is arranged above and a water pipe 11 is arranged below. A connection plate 15 is provided at the end of the lifting rod 5 away from the hopper 6 , and an insertion hole 16 is provided on the connection plate 15 . The stirring device 7 comprises a driving plate 71 and a stirring rod 72 installed on the driving plate 71, the stirring rod 72 is a hollow structure, and the stirring rod 72 is filled with cooling liquid; the case cover 9 is composed of two sub-case covers 91 One end of the s...

Embodiment 2

[0033] A mixed type soil conditioner, comprising 20 parts by weight of cassava residue, 5 parts of rice bran, 0.5 part of selenium powder, 15 parts of shell powder, 25 parts of calcined shell powder, 10 parts of dried sludge, 15 parts of bentonite, 8 parts of sepiolite, 1.5 parts of ferromanganese ore powder. Among them, cassava residue is cassava processing waste peeled by a high-pressure water gun; calcined shell powder is calcined shell powder obtained by grinding at 800° C. for 8 hours, quenched by the above-mentioned quenching device, and then ground. The preparation method of the selenium-enriched high-calcium organic fertilizer comprises the steps of:

[0034] Step a, pretreatment: dehydrate the cassava residue and mix it with dried sludge at a mass ratio of 1.5:1, add rice bran, control the moisture content below 65%, and obtain a pretreatment mixture.

[0035] Step b, trough fermentation: add RW rot accelerator to the mixed material obtained in step a, carry out aero...

Embodiment 3

[0044] Adopt the soil conditioner prepared by embodiment 2 to be applied on the paddy fields of Jinchengjiang District: compared with the contrast, the application of the soil conditioner has effectively improved the yield of paddy rice. Plant height, ear length, number of grains per ear, and number of empty grains were not significantly different. The application of soil conditioner increased the effective number of ears of rice and improved the resistance of rice during the rice growth period. The application of soil conditioner (200 kg / mu) Compared with the control group, the yield of rice was improved by 16.2%.

[0045] Table 2 Effect of soil conditioner on rice yield

[0046]

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Abstract

The invention belongs to the field of soil regulation materials, and particularly provides a mixed type soil conditioner and a method for preparing the same. The mixed type soil conditioner comprises, by weight, 20-25 parts of cassava residues, 5-8 parts of bran coat, 0.3-0.5 part of selenium powder, 15-25 parts of conch meals, 15-25 parts of calcined conch meal, 10-12 parts of dried sludge, 10-20 parts of bentonite, 8-12 parts of sepiolite and 1-3 parts of high-iron manganese ore powder. The mixed type soil conditioner and the method have the advantages that a PH (potential of hydrogen) value of soil can be regulated by the mixed type soil conditioner in a formula, heavy metal in the soil can be passivated, granular structures of the soil can be improved, nutrition supply of trace elements such as iron and selenium in the soil can be increased, the yield of crops can be increased, and the quality of the crops can be improved.

Description

technical field [0001] The invention belongs to the field of soil conditioning materials, and specifically provides a mixed soil conditioning agent and a preparation method thereof. Background technique [0002] At present, the passivating agents widely used by scientists in the in-situ chemical fixation and restoration of heavy metal-contaminated soils in central and southern regions mainly include clay minerals (bentonite, kaolin, sepiolite, zeolite, etc.), phosphates (hydroxyapatite, phosphorus Mineral powder, phosphoric acid, phosphate fertilizer and bone char, etc.), industrial by-products (red mud, fly ash, phosphogypsum, etc.), metal oxides (iron oxides, manganese oxides, aluminum oxides, etc.), organic matter (organic compost, livestock Feces, etc.) and microbial materials, etc. Among these passivators, inorganic passivation restoration agents based on clay minerals, phosphates, and industrial by-products are most widely used in the passivation restoration of heavy m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K17/06C09K109/00C09K101/00
CPCC09K17/06C09K17/40C09K2101/00C09K2109/00
Inventor 刘永贤潘丽萍黄雁飞农梦玲危向峰王道波周彦欧勇鹿士杨
Owner AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI
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