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Calcareous soil salt alkali improver and preparation method thereof

A calcareous soil and improver technology, applied in chemical instruments and methods, other chemical processes, applications, etc., can solve the problems of plant growth stress, plant growth obstruction, increase of sodium salt, etc., to reduce soil bulk density and improve soil water retention Effects of fertilizer retention, pH reduction and alkalinity reduction

Inactive Publication Date: 2018-11-09
北京绿之梦生态农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the publication number CN1317539A discloses a saline-alkali soil improver, which is mixed with polymaleic acid, sodium alkylbenzene sulfonate and water in a certain proportion, and the alkylbenzene sulfonic acid in the composition is The addition of exogenous sodium will inevitably increase the sodium salt that is seriously harmful to saline-alkaline soil. High concentrations of sodium salt will stress plant growth, resulting in stunted plant growth and even dead seedlings

Method used

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  • Calcareous soil salt alkali improver and preparation method thereof
  • Calcareous soil salt alkali improver and preparation method thereof

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Effect test

Embodiment 1

[0045] A kind of calcareous soil salinity improver of the present implementation, described improver is made up of acrylic acid 10kg, maleic anhydride 10kg and water 10kg.

[0046] The preparation method of the described calcareous soil conditioner of the present embodiment, comprises the steps:

[0047] (1) take by weighing according to the weight of each component for subsequent use;

[0048] (2) standby maleic anhydride is dissolved in water, stir evenly, heat;

[0049] (3) Add ammonium persulfate and acrylic acid under stirring at a constant temperature of 65°C, the concentration of ammonium persulfate is 90g / L, control the speed of adding acrylic acid, and control the dropwise addition in 2.5 hours;

[0050] (4) Heating after the dropwise addition, keeping a constant temperature of 80°C for 3.5 hours to obtain the described calcareous soil saline-alkali improver.

Embodiment 2

[0052] A kind of calcareous soil salinity improver of the present implementation, described improver is made up of acrylic acid 15kg, maleic anhydride 10kg and water 20kg.

[0053] The preparation method of the described calcareous soil conditioner of the present embodiment, comprises the steps:

[0054] (1) take by weighing according to the weight of each component for subsequent use;

[0055] (2) standby maleic anhydride is dissolved in water, stir evenly, heat;

[0056] (3) Add ammonium persulfate and acrylic acid under stirring at a constant temperature of 70°C, the concentration of ammonium persulfate is 100g / L, control the speed of dripping acrylic acid, and control the dropwise addition in 2.7 hours;

[0057] (4) Heating after the dropwise addition, keeping a constant temperature of 85°C for 3.7 hours to obtain the described calcareous soil saline-alkali improver.

Embodiment 3

[0059] A kind of calcareous soil salinity improving agent of this implementation, described improving agent is made up of acrylic acid 45kg, maleic anhydride 40kg and water 40kg.

[0060] The preparation method of the described calcareous soil conditioner of the present embodiment, comprises the steps:

[0061] (1) take by weighing according to the weight of each component for subsequent use;

[0062] (2) standby maleic anhydride is dissolved in water, stir evenly, heat;

[0063] (3) Add ammonium persulfate and acrylic acid under stirring at a constant temperature of 75°C, the concentration of ammonium persulfate is 110g / L, control the speed of dropping acrylic acid, and control the dropwise addition in 3.0 hours;

[0064] (4) Heating after dropwise addition, keeping a constant temperature of 90 DEG C for 4.0 hours to react, to obtain the described calcareous soil saline-alkali improver.

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Abstract

The invention discloses a calcareous soil salt alkali improver and a preparation method thereof. The improver is prepared from acrylic acid, maleic anhydride and water. The salt alkali improver prepared by the invention can rapidly reduce the pH value of soil, reduce the soil alkalization degree, enhance the soil desalination capacity, improve the soil granular structure, reduce the soil bulk density, enhance the soil permeability, increase the soil calcium fertilizer content, and improve the soil function of moisture and fertility retention; the addition of the improver does not cause secondary pollution to the soil environment; the composition of the improver is simple, the preparation method is convenient, the use is convenient, and the improver is sprayed by adding water, is dripped with water or conducts drip irrigation with water-saving irrigation technique.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil improvement, in particular to a calcareous soil saline-alkali improver and a preparation method thereof. Background technique [0002] Calcareous soil, also known as alkaline soil, is a general term for calcareous soils containing calcium carbonate or calcium bicarbonate in the soil profile. Mainly distributed in temperate, warm temperate semi-humid, semi-arid and arid regions. In my country, it is mainly distributed in North China and Northwest China, including the west side of the Songliao Plain, the hilly plain at the eastern foot of the Greater Khingan Mountains, the eastern and central parts of the Inner Mongolia Plateau, the Ordos Plateau, the Bashang area of ​​Hebei, the northern edge of the Datong Basin in Shanxi, and Qinghai, Gansu, and Xinjiang Vertical bands and intermountain basins in part of the mountains. According to the statistics of the second national soil census, und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/20C08F222/06C08F220/06C09K101/00C09K109/00
CPCC09K17/20C08F220/06C08F222/06C09K2101/00C09K2109/00
Inventor 秦文斌杨玲王京梁王志勇习桂荣
Owner 北京绿之梦生态农业科技有限公司
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