Soil conditioner as well as preparation method and application thereof

A soil conditioner and soil technology, applied in the field of soil conditioner and its preparation, can solve the problems of weak adsorption capacity, insignificant effect of increasing yield, single function, etc. The effect of heavy metal content

Inactive Publication Date: 2019-07-19
北京日宏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These soil conditioners have simple ingredients and relatively single functions, especially the relatively weak adsorption capacity for heavy metals, and the effect of increasing production is not significant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. At 80±5°C, at a liquid-solid ratio of 5:1, use sulfuric acid with a concentration of 60% by weight to pickle the diatomite with a particle size of 0.1mm for 2.5 hours, separate, and then use a concentration of 1mol / L Wash and neutralize with aqueous NaOH solution to obtain acid-modified diatomite.

[0046] 2. Calcining the acid-modified diatomite at 900° C. for 2 hours to obtain modified diatomite.

[0047] The specific surface area of ​​modified diatomite was measured by scanning electron microscope, which was 1130m 2 / g. Measurement of SiO by X-ray fluorescence spectroscopy 2 The content is 89.5% by weight.

[0048] 3 First, add 40 parts by weight of modified diatomite prepared in step 2, 30 parts by weight of calcium carbonate, 10 parts by weight of humic acid, 5 parts by weight of Magnesium chloride, 2 parts by weight of ammonium molybdate and 3 parts by weight of boric acid were granulated. Then, add 10 parts by weight of composite microbial inoculum to coa...

Embodiment 2

[0050] 1. At 80±5°C, at a liquid-solid ratio of 4:1, use sulfuric acid with a concentration of 70% by weight to pickle the diatomite with a particle size of 0.25mm for 2.5 hours, separate, and then use a concentration of 1mol / L Wash and neutralize with aqueous NaOH solution to obtain acid-modified diatomite.

[0051] 2. Calcining the obtained acid-modified diatomite at 1000° C. for 2 hours to obtain modified diatomite.

[0052] Using a scanning electron microscope to measure the specific surface area of ​​modified diatomite, it is 1025m 2 / g. Measurement of SiO by X-ray Fluorescence Spectroscopy 2 The content is 86.7% by weight.

[0053] 3 First, at a speed of 50 rpm, add 30 parts by weight of modified diatomite prepared in step 2, 30 parts by weight of calcium carbonate, 10 parts by weight of humic acid, 5 parts by weight of Magnesium chloride, 2 parts by weight of ammonium molybdate and 3 parts by weight of boric acid were granulated. Then, add 20 parts by weight of com...

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Abstract

The invention provides a soil conditioner. The soil conditioner comprises: 30-40% by weight of modified diatomite, 30-40% by weight of calcium salt, 10-20% by weight of humic acid, 5-10% by weight ofmagnesium salt, 2-5% by weight of ammonium molybdate, 3-10% by weight of boric acid and 10-20% by weight of composite microbial agent, wherein the composite microbial agent contains 2*10<8>-1*10<9> cuf/g of composite microbial bacteria, and the composite microbial bacteria contain bacillus cereus, bacillus subtilis, trichoderma and phosphate solubilizing bacteria. The invention also provides a preparation method and application of the soil conditioner. The soil conditioner disclosed by the invention can be used for remarkably reducing the content of heavy metals in soil and increasing the yield.

Description

technical field [0001] The invention relates to a soil conditioner and its preparation method and application. Background technique [0002] Soil quality is directly related to the sustainable development of agriculture in our country. Due to the excessive application of chemical fertilizers and other factors, such as the loss of heavy metals after mining, the soil quality in my country has deteriorated seriously in the past period of time. Firstly, it is manifested as serious soil acidification. The soil pH in southern my country is only about 4. Soil acidification will increase soil acidity, accelerate soil nutrient loss, inhibit crop growth and even cause crop death. According to relevant reports, the total area of ​​acidic soil in my country accounts for about 21% of the cultivated land area. Secondly, the content of heavy metals in the soil has increased seriously. According to conservative data, the total soil point exceeding rate in the country is 16.1%, and the are...

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 李元友李大伟赵秀娟
Owner 北京日宏科技有限公司
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