Supercharge Your Innovation With Domain-Expert AI Agents!

Universal soil available element extraction method

A general-purpose technology for element extraction, which is applied in the direction of chemical reaction analysis of materials, material analysis through observation of the influence of chemical indicators, complex mathematical operations, etc., to achieve good consistency results

Inactive Publication Date: 2020-12-29
INST OF SOIL SCI CHINESE ACAD OF SCI +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, the extraction of available phosphorus generally needs to first determine the soil pH range, and the available phosphorus in acidic and alkaline soils is generally extracted by the Bray method and the Olsen method respectively. The difference in methods causes the quantitative comparison of soil available phosphorus to vary between different soils. technical challenge

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Universal soil available element extraction method
  • Universal soil available element extraction method
  • Universal soil available element extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 obtains the effective element content relationship equation extracted by ammonium chloride instead of M3 method (y) and M3 method (x)

[0044] The contents of 30 kinds of soil available phosphorus, potassium, calcium, magnesium, iron, aluminum, copper, zinc and manganese were determined by ammonium chloride instead of M3 method and M3 method respectively, and then measured by Bray method and Olsen method respectively to obtain 10 Acidic soil, 20 kinds of neutral and alkaline soil available phosphorus content. Using Pearson correlation analysis to study the correlation between the contents of available phosphorus, potassium, calcium, magnesium, iron, aluminum, copper, zinc and manganese obtained by the method of replacing M3 with ammonium chloride and the contents of available phosphorus, potassium, calcium, magnesium, iron, aluminum, copper, zinc and manganese in 30 kinds of test soils ; Study the correlation between the soil available phosphorus content me...

Embodiment 2

[0045] Example 2 Evaluation of Improvement Effect of Straw Biochar in Brick Red Soil in Hainan

[0046] The Hainan brick red soil with a pH of 5.04 was selected for the biochar improvement experiment. After adding 5% rice straw charcoal, rape straw charcoal, peanut straw charcoal, soybean straw charcoal and activated carbon, the soil pH increased to 6.35, 7.15, 7.52, 7.38 respectively And 6.13, according to the routine operation of the laboratory, the acidic, neutral and alkaline (pH=6.0 as the boundary) soil should be extracted by Bray and Olsen respectively. In this example, we have applied both methods, and the six kinds of soil available phosphorus obtained by the Bray method are 1.1, 10.4, 5.7, 37.7, 5.1, 1.5mg kg -1; Soil available phosphorus obtained by Olsen method is 2.5, 13.7, 8.0, 27.6, 6.9, 2.8mg kg -1 , it can be found that the available phosphorus content extracted by the two methods is not completely consistent. Therefore, when the two methods are applied to ev...

Embodiment 3

[0047] Example 3 Evaluation of the Improvement Effect of Guangdong Red Soil Compound Alkaline Improver

[0048] The Guangdong red soil with a pH of 4.56 was selected for the improvement experiment of the compound alkaline modifier, adding 4 g kg -1 Biomass ash, 2g kg -1 bone residue, and 2g kg -1 After alkaline slag treatment, the soil pH increased to 6.33. The two kinds of soil available phosphorus obtained by Bray method are 0.2 and 35.2 mg kg respectively -1 ; The soil available phosphorus obtained by Olsen method was 0.5 and 14.5mg kg respectively -1 , The available phosphorus content of the improved soil determined by the two methods differed by 1.43 times. The soil available phosphorus content obtained by ammonium chloride instead of M3 method is 2.1 and 64.3mg kg respectively -1 , and is also suitable for acidic, neutral and alkaline soils. Therefore, this formula composite improver can significantly increase the soil pH value and available phosphorus content, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a universal soil available element extraction method. The method comprises the following steps that ammonium chloride replaces an ammonium nitrate Mehlich3 (M3) universal soilavailable element extraction agent to extract available phosphorus, potassium, zinc, iron, manganese, magnesium, calcium, copper and aluminum of different soil nationwide, and the obtained result is remarkably related to the result obtained through an M3 method (P is less than 0.01); results of acidic and alkaline soil Bray-P and Olsen-P obtained through the method of replacing M3 with the ammonium chloride are remarkably related (P is less than 0.01); and results of determination of available phosphorus in soil improved by an alkaline improver through the method of replacing M3 with the ammonium chloride show that the method can be used as a universal extraction method for available phosphorus in improved soil. The universal soil available element efficient extraction method is suitable for determination of nutrient elements such as available phosphorus, and potassium in all acidic, neutral and alkaline soil, is suitable for determination of elements such as available-state heavy metal zinc, and copper, and is an efficient and universal soil available element extraction method.

Description

technical field [0001] The invention belongs to the field of soil effective element determination, and in particular relates to a general-purpose soil effective element extraction method. Background technique [0002] In 1984, Mehlich developed an M3 extractant (Commun.Soil Sci.Plant Anal.1984,15:1409-1416), which realized the removal of phosphorus, potassium, calcium, magnesium, aluminum, iron, zinc, and manganese in soil and sediment. The one-time extraction of effective states of multiple elements such as copper, copper, etc. greatly improves the efficiency of soil testing; and the M3 method, as a "universal" soil test extraction agent, is applicable to all kinds of soils. Especially for phosphorus element, it participates in the basic transfer process from solar radiation energy to chemical energy (photosynthesis), and maintains the development of plant root system, and is an essential macroelement for plants. Phosphorus in highly weathered soils mainly exists in the fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N21/78G06F17/11G06F17/18
CPCG01N21/73G01N21/78G06F17/11G06F17/18
Inventor 姜军刘慧佟雪娇董颖俞元春徐仁扣
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com