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Combined extractive agent for neutral soil and calcareous soil nutrient

A calcareous soil and extraction agent technology, which is applied in soil testing, preparation of test samples, material inspection products, etc., can solve problems such as unstable performance, poor adaptability, and weak extraction ability, and achieve improved Extraction efficiency, significant correlation, and ease of productization

Inactive Publication Date: 2004-06-09
河南农大机电技术开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing neutral and calcareous soil combined extraction agents only contain bicarbonate and sulfate, and the extraction ability is weak, the performance is unstable, and the adaptability is not strong.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Neutral, calcareous soil nutrient joint extraction agent powder composition has selected sodium bicarbonate, sodium carbonate, sodium sulfate, sodium acetate for use in this example, wherein contains sodium bicarbonate 40%, sodium acetate 4%, sodium sulfate 50% , sodium carbonate 2%, get 93.5 grams of this powder and dissolve it in distilled water, and fix it to 1000ml. When extracting soil nutrients, the water-soil ratio is 5: 1. Get an extraction container and add the soil sample to be tested and add the extraction agent solution , shake vigorously for 5 minutes, and the filtered filtrate can be used for determination.

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Abstract

This invention relates to a soil nutrient combined extractive agent, especially to a neutral, lime soil nutrient combined extractive agent related obviously with conventional extracting effect and leaching multiple kinds of soil effective nutrients at the same time which is a solid powder containing Na ions, sulphate, acetate, bicarbonate and carbonate multiple effective nutrient to be mixed to water solution to extractor in neutral, lime soils, eg.: to extract ammonia nitrogen, nitrate nitrogen, fast-effective P and fast-effective K at the same time.

Description

(1) Technical field [0001] The invention relates to a neutral and calcareous soil nutrient combined extraction agent, in particular to a neutral and calcareous soil nutrient combination extraction agent which has strong extraction ability, high extraction efficiency and can simultaneously extract various effective nutrients in neutral and calcareous soil. Calcareous soil nutrient joint extractant. (2) Background technology [0002] At present, when people are extracting the available nutrients in the soil, they usually use separate extraction methods, such as using 0.5mol / L sodium bicarbonate solution to extract available phosphorus in the soil, and using 1mol / L neutral ammonium acetate when extracting available potassium. solution, time-consuming and labor-intensive, and the efficiency is not high. With the rapid development of rapid measurement technology, people are eager to improve the extraction efficiency of soil nutrients. Therefore, people expect an extraction agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N33/24
Inventor 段铁城胡建东朱秀红杨剑飞孙玉峰肖建军
Owner 河南农大机电技术开发中心
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