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Seedling raising substrate for wind prevention and sand fixation plants and preparation method of seedling raising substrate

A seedling-growing substrate and windproof and sand-fixing technology, which is applied in the field of windproof and sand-fixing plant seedling-raising substrate and its preparation, can solve problems such as environmental pollution, and achieve the effects of strong microbial activity, well-developed plant root system, and increased survival rate

Inactive Publication Date: 2015-03-25
INST OF SOIL FERTILIZER & WATER SAVING AGRI GANSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high content of heavy metal elements and viral pathogens, direct use of these sludges will cause serious environmental pollution problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1. The source of the raw materials needed to prepare the seedling substrate:

[0014] Collect or purchase dehydrated and dried sludge (with a water content of about 10%) from urban domestic sewage sources, and crush the sludge through a 2mm sieve. Preparation of biochar from crop stalks: using crop stalks as raw materials, using a self-made biomass carbonization furnace (CN201962245U) to prepare under the conditions of anaerobic pyrolysis (pyrolysis temperature 300 ° C ~ 500 ° C), prepared The resulting biochar was passed through a 2mm sieve. Source of wood vinegar: collected during the preparation of biochar.

[0015] 2. The composting process of municipal sludge and biochar:

[0016] Fully mix the 2mm sieved sludge, biochar and 0.1% fermentation agent (commercially available, Gymboree fertilizer fermentation agent), adjust the water content to 50% to 60%, and pile it into a trapezoidal pile (bottom 2m in width, 1m in width at the top, and 1.5m in height) for aerobi...

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Abstract

The invention discloses a seedling raising substrate for wind prevention and sand fixation plants. The seedling raising substrate is prepared from municipal sludge and biomass charcoal in such a manner of aerobic composting. The invention also provides a preparation method of the seedling raising substrate. The seedling raising substrate for the wind prevention and sand fixation plants is prepared by carrying out aerobic composting on the raw materials (municipal sludge and the biomass charcoal) and adding a certain quantity of water-retaining agent and plant growth regulator to the raw materials; the seedling raising substrate is rich in nutrient elements such as organic matters and nitrogen phosphorus and potassium, and also has strong microbial activity; the plants cultivated by use of the seedling raising substrate have prosperous root systems; the substrate is applied during transplanting so that the rejuvenation period of the transplanted plants can be shortened and the survival rate of the transplanted plants can be increased; in short, the seedling raising substrate is highly suitable for afforestation and grass planting on difficult sites such as droughty desert areas.

Description

technical field [0001] The invention relates to the field of resource utilization of municipal sludge and agricultural organic waste, in particular to a seedling-raising substrate for windproof and sand-fixing plants and a preparation method thereof. Background technique [0002] With the expansion of city scale and the increase of the number of urban sewage treatment plants, a large amount of municipal sludge is produced every year. Due to the high content of heavy metal elements and viral pathogens, direct use of these sludges will cause serious environmental pollution problems. The aerobic composting treatment of sludge can stabilize the heavy metal elements in the sludge, and can kill the viruses and pathogenic bacteria in the sludge, so that the sludge can meet the requirements of secondary utilization. Because sludge is rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium, and sludge is cheap and easy to obtain, using sludge for landscaping...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00
CPCC05F7/00C05F17/00C05G3/00C05G3/80C05F11/00Y02A40/22Y02W30/40
Inventor 袁金华俄胜哲黄涛车宗贤王婷
Owner INST OF SOIL FERTILIZER & WATER SAVING AGRI GANSU ACAD OF AGRI SCI
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