Alkaline land soil repair agent

A soil remediation agent, a technology for saline-alkali land, applied in the restoration of polluted soil, soil conditioning materials, organic fertilizers, etc., can solve the problems of high cost, troublesome use, poor remediation effect, etc., to increase yield, reduce environmental pollution, and save energy. The effect of resources

Inactive Publication Date: 2009-04-29
TIANJIN INST OF AGRI RESOURCES & ENVIRONMENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the production process of the liquid soil conditioner is relatively complicated, the cost is high, the use is also relatively troublesome, and the aftereffect is short.
The composition of inorganic solid soil conditioner is relatively single, the effect is poor, and most of them are used to improve alkaline soil, but the effect of improving and repairing saline soil mainly containing salt is poor. When the by-product, desulfurized gypsum, is used as a soil improver, it is mainly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 600kg of desulfurized gypsum with a particle size of about 40-60 μm (can be purchased from coal-fired power plants, wherein the content of calcium sulfate dihydrate is above 80%), 330kg of natural organic matter (including 171kg of weathered coal, 159kg of peat), 27kg of microbial fertilizer (produced by Haiwo Bioengineering Co., Ltd., black powder, with an effective bacterial content of 200 million / g, which has the functions of nitrogen fixation, phosphorus release, and potassium release) and 43kg of inorganic nutrients (including urea 10.32kg, superphosphate 24.94kg, potassium chloride 7.74kg), and then fully mixed evenly, and finally the above mixture is screened with a sieve of 0.5-1.0cm mesh, and the particles left on the screen are crushed and re-sieved, and the particles that pass through the screen are collected. The powdery substance can be made into 1 ton of the described saline-alkali soil restoration agent.

Embodiment 2

[0013] Weigh 63kg of desulfurized gypsum with a particle size of about 40-60μm, 30kg of natural organic matter (including 15.55kg of weathered coal and 14.45kg of peat), 1.8kg of microbial fertilizer and 5.2kg of inorganic nutrients (including 1.248kg of urea, superphosphoric acid Calcium 3.016kg and Potassium Chloride 0.936kg), then fully mix evenly, and finally the above mixture is screened with a sieve with a mesh size of 0.5-1.0cm, and the particles left on the screen are crushed and re-sieved, and collected through the screen The powdery substance can be made into 100kg of the described saline-alkali soil restoration agent.

Embodiment 3

[0015] Weigh 660 kg of desulfurized gypsum with a particle size of about 40-60 μm, 280 kg of natural organic matter (including 145.1 kg of weathered coal, 134.9 kg of peat), 23 kg of microbial fertilizer and 37 kg of inorganic nutrients (including 8.88 kg of urea, 21.46 kg of superphosphate kg, Potassium Chloride 6.66kg), and then fully mix evenly, and finally screen the above mixture with a sieve of 0.5-1.0 cm mesh, crush the particles left on the screen and re-sieve, and collect the powder that passes through the screen 1 ton of the saline-alkali land soil remediation agent can be made from the same substance.

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PUM

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Abstract

The invention relates to a restoration agent for saline-alkali land soil, which consists of free gypsum dehydration, nature organic substance, microbial fertilizer and inorganic nutrient with weight ratio of 60-70:25-35:1-4:3-6; the content of dihydrate calcium sulfate in the free gypsum dehydration is over 80 percent; the nature organic substance consists of weathered coal and grass carbon with weight ratio of 1.0:0.93; the content of effective bacteria in the microbial fertilizer is 2.0 hundred millions/g; and the inorganic nutrient consists of urea, ordinary superphosphate and potassium chloride with weight ratio of 1.0:2.42:075. The restoration agent can utilize calcium ions in the free gypsum dehydration for replacing sodium ions in the soil so as to lower the alkalinity in the soil and provide calcium and sulfur elements for crops, while the nature organic substance can lower and regulate the slat content and the alkalinity in the soil. In addition, the nature organic substance, the microbial fertilizer and the inorganic nutrient can supply large amount of nutrient elements such as nitrogen, phosphorus, potassium and the like to the crop for normal growth, thereby being capable of improving the yield of the crop.

Description

technical field [0001] The invention relates to a soil restoration agent, in particular to a saline-alkali soil restoration agent. Background technique [0002] Soil salinization has become a worldwide problem. At present, the area of ​​saline soil in the world is about 10 million km 2 , our country is 991,300 km 2 . There are large areas of coastal saline soil along the Bohai Sea, Yellow Sea, and East Coastal Plain along the coastline of more than 18,000 kilometers in my country, about 80% of which have not been utilized. Therefore, the improvement and restoration of saline-alkali land is a very important task. [0003] At present, one of the chemical methods used to control saline-alkali land is to apply amendments to the soil. There are many kinds of existing soil conditioners, which are mainly divided into two categories: solid and liquid. Wherein the production process of the liquid soil conditioner is relatively complicated, the cost is high, the use is also relati...

Claims

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Application Information

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IPC IPC(8): B09C1/08C09K17/40
Inventor 邵玉翠任顺荣曾秀文廉晓娟杨志刚
Owner TIANJIN INST OF AGRI RESOURCES & ENVIRONMENTAL
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