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Multi-effect soil conditioner and preparation method thereof

A soil improver and multifunctional technology, which is applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., and can solve problems such as deterioration of soil capacity and property preservation performance, imbalance of soil nutrient supply ratio, and shortage of nutrient elements. , to achieve the effect of reducing the loss of chemical fertilizers, improving the quality of crops, and activating nutrients

Active Publication Date: 2013-02-13
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still some problems, mainly in: ①N, P, K and other macronutrients are in short supply, and the ratio of soil nutrient supply is out of balance; Make some soil capacity and properties (such as storage performance) worse; ③Fly ash contains a variety of heavy metal elements, which will bring heavy metals into the soil when it is used to repair the soil, causing heavy metal pollution in groundwater or soil surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A multifunctional soil improver comprises the following raw materials in parts by weight, 600 parts of organic solid waste, 210 parts of fly ash, and 190 parts of polyamino acid superabsorbent. Fully mix the organic solid waste and fly ash, and then spray the polyamino acid solution into the mixture of organic solid waste and fly ash in the form of spraying, stir evenly, and then dry it in a dryer at 100°C, and crush it into a particle size of 0.5 -5mm particles are fine. Among them, the organic solid waste adopts sludge; the fly ash adopts the standard agricultural fly ash grade purchased in the market; the polyamino acid super water retention agent is polyaspartic acid, which is made by L-aspartic acid thermal condensation method, and the molecular weight is 2.906 ×10 4 , without removing the catalytic phosphoric acid during the addition process, it can be used directly.

Embodiment 2

[0030] A kind of multifunctional soil conditioner, comprises the raw material of following weight portion, organic solid waste 660 parts, fly ash 185 parts, polyamino acid super water retaining agent 150 parts, organic solid waste and fly ash are fully mixed, Then the polyamino acid solution is sprayed into the mixture of organic solid waste and fly ash, then dried in a dryer at 100°C, and crushed into particles with a particle diameter of 0.5-5mm. Among them, the organic solid waste adopts air-dried pig manure; the fly ash adopts the commercially available standard agricultural fly ash grade; 2.906×10 4 , without removing the catalytic phosphoric acid during the addition process, it can be used directly.

Embodiment 3

[0032] A kind of multifunctional soil conditioner, comprises the raw material of following weight portion, organic solid waste 680 parts, fly ash 180 parts, polyamino acid super water retaining agent 140 parts, organic solid waste and fly ash are fully mixed, Then the polyamino acid solution is sprayed into the mixture of organic solid waste and fly ash, then dried in a dryer at 100°C, and crushed into particles with a particle diameter of 0.5-5mm. Among them, the organic solid waste is sawdust; the fly ash is the standard agricultural fly ash grade purchased in the market; the polyamino acid super water retention agent is polyaspartic acid, which is made by L-aspartic acid thermal condensation method, and the molecular weight is 2.906× 10 4 , without removing the catalytic phosphoric acid during the addition process, it can be used directly.

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Abstract

The invention discloses a multi-effect soil conditioner and a preparation method of the multi-effect soil conditioner. The multi-effect soil conditioner comprises the raw materials, by weight, 600-740 parts of organic solid waste, 150-210 parts of flyash and 110-190 parts of polyamino acid superabsorbent. The 600-740 parts of the organic solid waste, the 150-210 parts of the flyash and the 110-190 parts of the polyamino acid superabsorbent are mixed sufficiently and dried to granulate. The soil conditioner has various advantages of being water-holding and fertilizer-saving, and increasing plant soil nutrient and improving soil physico-chemical property and the like. The soil conditioner can be applied to various qualitative soils and play a crucial role in restoring special soils such as high level of fluoride soil and clayey soil, and also play a crucial role in wind prevention and sand fixation.

Description

technical field [0001] The invention relates to a soil improver with multiple functions of water retention, fertilizer saving, increase of plant soil nutrient, improvement of soil physical and chemical properties, etc., specifically a multifunctional composite soil improver and a preparation method thereof. Background technique [0002] The loss of soil nutrients in our country is serious. Because of excessive use, many useful fertilizer elements in the soil are lost before the crops can absorb them. For example, in some places, the utilization rate of nitrogen fertilizer is 20% to 50%, and the utilization rate of phosphorus fertilizer is 10% to 10%. 30%, the utilization rate of nitrogen and phosphorus is very low, resulting in a great waste of resources and polluting the environment. At the same time, my country is a country with severe drought and water shortage. Coupled with the severe changes in climate and environment in recent years, droughts have occurred from time to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
Inventor 余定华黄和杨冬青贾儒李正文
Owner NANJING UNIV OF TECH
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