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Soda type saline-alkali soil modifier and preparation method thereof

A technology of improver and soda, which is applied in the direction of soil conditioning materials, chemical instruments and methods, and other chemical processes, can solve the problems of general effect, high cost, and limited sources of waste gypsum, and achieve low prices, increase organic matter and nutrition, The effect of improving soil water retention capacity

Inactive Publication Date: 2012-06-13
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 200510064463.5 discloses a soil conditioner, which uses zeolite as the main raw material and is improved after acidification and oxygenation and calcining, but the cost is high and the effect is general
Chinese patent 200810017565.5 discloses a modifier using power plant desulfurization gypsum as the main raw material, but the source of waste gypsum is limited and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 According to the proportioning ratio, take respectively 30% sulfuric acid, 30% furfural slag, 29% rice husk powder, 6% fertilizer, 2.5% water retention agent and 2.5% organic complexing agent gluconic acid, mix Uniformly, obtain soda type saline-alkali soil improver; The mass percentage concentration of described sulfuric acid is 20%; The particle diameter of described furfural slag is 0.5-2mm, and moisture content is 10%; The particle diameter of described rice husk powder is 0.5-2mm; the fertilizer is a mixed fertilizer composed of 40% urea, 35% monoammonium phosphate and 25% potassium chloride; the water retaining agent is humic acid-starch grafted acrylic acid copolymer.

[0035] With the soda saline-alkali soil improver that embodiment 1 makes, the heavy saline-alkali land of 10 hectares of PH=10.5 in Tongyu County, Baicheng City, Jilin Province has carried out corn planting test, and the soda saline-alkali soil improver consumption is 1.8 tons / mu; The...

Embodiment 2

[0038] Embodiment 2 is to get respectively the sulfuric acid of 20.5% by mass percentage, 35% of furfural slag, 35% of rice husk powder, 6% of fertilizer, 2.0% of water retaining agent, 1.5% of organic complexing agent tartaric acid and mix homogeneously, Obtain a soda-type saline-alkali soil improver; the mass percent concentration of the sulfuric acid is 20%; the particle size of the furfural slag is 0.5-2mm, and the water content is 6%; the particle size of the rice husk powder is 0.5-2mm. 2mm; the described water-retaining agent is humic acid-starch grafted acrylic acid copolymer (2); the described fertilizer is made up of 40% urea, 35% monoammonium phosphate and 25% potassium chloride by mass percentage compost.

[0039] With the prepared soda-type saline-alkali soil improver, a corn planting test was carried out in 10 hectares of PH=9.3 moderate saline-alkali land in Fuxian Town, Shuangliao County, Siping City, Jilin Province. The soda-type saline-alkali soil improver wa...

Embodiment 3

[0042] Embodiment 3 According to the proportioning ratio, take 30% phosphoric acid, 27% furfural slag, 30% rice husk powder, 8% fertilizer, 3% water-retaining agent and 2% organic complexing agent gluconic acid, mix Evenly, soda-type saline-alkali soil improver is obtained; the mass percent concentration of phosphoric acid is 20%; the particle diameter of the furfural slag is 0.5-2mm, and the water content is 5%; the particle diameter of the rice husk powder 0.5-2mm; the water-retaining agent is humic acid-starch grafted acrylic acid copolymer; the fertilizer is 40% by mass of urea, 35% by mass of monoammonium phosphate, and 25% by mass Mixed fertilizer composed of potassium chloride.

[0043] With the prepared soda-type saline-alkaline soil improver, a corn planting test was carried out in 10 hectares of PH=8.1 mild saline-alkali land in Bajilei Township, Nong'an County, Changchun City, Jilin Province. The application method is: spread the soda-type saline-alkaline soil amen...

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Abstract

The invention relates to a soda type saline-alkali soil modifier and a preparation method thereof. The soda type salt affected soil modifier comprises the following components in percentage by mass: inorganic acid 10-50, furfural residue 20-40, rice hull powder 10-40, fertilizer 5-10, water-retaining agent 0.1-5.0 and organic complexing agent 0.1-2.5. The furfural residue, the rice hull powder, the water-retaining agent, the fertilizer and the organic complexing agent are mixed, the inorganic acid is sprayed onto the mixture, and the mixture and the inorganic acid are mixed uniformly to obtain the soda type saline-alkali soil modifier which is suitable for modifying saline-alkali soil of which the PH value is between 8.0 and 10.5. When the modifier is used in severe saline-alkali soil, the average unit yield of corns is 3,651 kilograms per hectare which is increased by 69.3 percent; when the modifier is used in medium saline-alkali soil, the average unit yield of corns is 4,450 to 4.530 kilograms per hectare, which is increased by 57.0 to 62.8 percent; and when the modifier is used in slight saline-alkali soil, the average unit yield of corns is 5,268 kilograms per hectare which is increased by 40.3 percent.

Description

technical field [0001] The invention relates to a soda-type saline-alkali soil improver and a preparation method thereof. Background technique [0002] The large area of ​​saline-alkali soil in our country has seriously affected the development of agriculture and forestry in our country. Chinese patent 200910117235.8 discloses a saline-alkali soil improver, which is mixed with furfural slag, weathered coal, straw powder and organic fertilizer in a certain proportion. The improvement effect on soil with severe salinity (PH=10) is general. Chinese patent 200510064463.5 discloses a soil conditioner, which uses zeolite as the main raw material, and is improved after acidification and oxygenation and calcining, but the cost is high and the effect is average. Chinese patent 200810017565.5 discloses a modifier using power plant desulfurization gypsum as the main raw material, but the source of waste gypsum is limited and the cost is high. [0003] Therefore, it is urgent to prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K109/00
Inventor 张龙秦磊
Owner CHANGCHUN UNIV OF TECH
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