Saline-alkali soil conditioner, and preparation method and application thereof

A technology of improving agent and saline-alkali land, applied in the field of soil conditioning substances and preparation

Active Publication Date: 2014-01-01
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the gypsum treatment, the chemical properties of the saline-alkali land have changed significantly, and the content of sodium bicarbonate has been significantly reduced, making the sodium colloid into calcium colloid, improving the calcium nutritional conditions of the saline-alkali soil, and playing an ion replacement role. In addition, gypsum is a Calcium fertilizer can improve the drought resistance of plants, but the cost of using gypsum to control saline-alkali land is too high, it is difficult to popularize, and it cannot change the fertilizer efficiency of saline-alkali land; in some saline-alkali lands, a large amount of sodium bicarbonate exists, the pH is high, and the solubility of calcium carbonate becomes smaller. It is easy to produce sedimentation, causing soil compaction, affecting the effect of replacement and improvement of soil
In recent years, improving soil with organic amendments has become a hot topic in soil improvement research, because the common characteristics of saline-alkali land are low organic matter content, poor soil physical and chemical properties, many anions and cations harmful to crop growth, low soil fertility, and difficult for crops to grow. seedling growth

Method used

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  • Saline-alkali soil conditioner, and preparation method and application thereof
  • Saline-alkali soil conditioner, and preparation method and application thereof
  • Saline-alkali soil conditioner, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: A saline-alkali soil improver and its preparation method, wherein the carrier components are pumice powder (120 mesh), medical stone powder (120 mesh), vermiculite powder (120 mesh), desulfurized gypsum (120 mesh), steelmaking steel slag (120 mesh ) composition, the mass percentage content is respectively 20%, 15%, 10%, 20% and 35%. Among them, the microbial active components are composed of niacin, p-aminobenzoic acid, inositol, serine, vitamin B1, vitamin B2 and glucose, and the mass percentages are 2%, 2%, 3%, 2%, 1%, 1% respectively and 89%. The production process is as follows: Dilute the bioactive components with water at a mass fraction of 10%, adjust the pH to 3.0 with phosphoric acid, put the carrier components into the mixer according to the above ratio and stir evenly, after the carrier components are stirred evenly, press the carrier components Slowly add the diluent of biologically active components while stirring in an amount of 10% by mass. ...

Embodiment 2

[0020] Example 2: A saline-alkali soil improver and its preparation method, wherein the carrier components are pumice powder (120 mesh), medical stone powder (120 mesh), vermiculite powder (120 mesh), desulfurized gypsum (120 mesh), steelmaking steel slag (120 mesh ) composition, and the mass percentage contents are respectively 25%, 20%, 10%, 20% and 25%. Among them, the microbial active components are composed of niacin, p-aminobenzoic acid, inositol, serine, vitamin B1, vitamin B2 and glucose, and the mass percentages are 5%, 3%, 4%, 3%, 2%, 2% respectively and 81%. The production process is as follows: Dilute the biologically active components with water at a mass fraction of 12%, adjust the pH to 3.5 with phosphoric acid, put the carrier components into the mixer according to the above ratio and stir evenly, after the carrier components are stirred evenly, press the carrier components 12% of the mass of the bioactive component is slowly added while stirring, and after ...

Embodiment 3

[0022] Example 3: Utilize the improver of embodiment 2, carry out field test, test site is located in Jiangsu Province Yancheng Dafeng Marine Biology Industrial Park. The test plant is Salicornia—the seeds of Salicornia are evenly sown in every test plot. A total of three concentration gradients were set up for the improver, and each gradient had 2 repetitions. A total of 6 plots were set up in the test field, and each plot was 4*3=12m 2 , three concentration gradients are set for the saline soil amendment: A 1 (0kg / community), A 2 (18kg / community), A 3 (54kg / plot), the test carried out the measurement of soil conductivity twice, with a one-month interval between the two measurements, and a portable conductivity meter was used for the measurement. The change of soil salinity is characterized by measuring the change of soil electrical conductivity. During the measurement, the measurement was carried out at two depths of 5cm and 10cm, and seven measurement points were rand...

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Abstract

The invention relates to a saline-alkali soil conditioner, and a preparation method and application thereof. The saline-alkali soil conditioner is composed of a carrier component and a biological active component, wherein the carrier component comprises pumice stone powder, medical stone powder, vermiculite powder, desulfurized gypsum and steel slag in steel making; microbial active components comprise niacin, p-aminobenzoic acid, inositol, serine, vitamin B1, vitamin B2 and glucose which are uniformly mixed to form the biological active component; and the mass of the microbial active components accounts for 8-12% of the mass of the carrier component. The saline-alkali soil conditioner can reduce the concentration of saline alkali around a plant root system, and also can inhibit the circulating damage to a crop root system after the underground deep saline alkali returns upwards, thus creating a favorable ecological environment for the crop root system.

Description

technical field [0001] The invention belongs to a soil regulating substance and a preparation method, in particular to a saline-alkali soil improver, a preparation method and an application thereof. [0002] Background technique [0003] Soil is one of the basic elements of the environmental ecosystem and the material basis for human survival. Saline-alkali soil and acidic soil are the two main types of low-yielding soil. With the development of industry, the area of ​​irrigated land and facility cultivation continues to expand, and seawater intrusion into seashores and tidal flats has a tendency to expand saline-alkali land. Soil salinization has become a worldwide resource and ecological problem. According to statistics from the Food and Agriculture Organization of the United Nations and UNESCO, there are about 1 billion hectares of various saline soils in the world 2 , accounting for 10% of the world's land area, widely distributed in more than 100 countries and region...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/42A01G1/00C09K109/00C09K101/00
Inventor 隆小华刘莉萍叶更新张天构刘兆普
Owner NANJING AGRICULTURAL UNIVERSITY
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