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Method for detecting environmental pollution caused by fertilization

A technology of organic fertilizer and application rate, applied in the direction of measuring device, color/spectral characteristic measurement, material analysis through optical means, etc., to achieve the effect of avoiding the problem of heavy metal pollution

Inactive Publication Date: 2019-01-01
上海多利农业发展有限公司 +1
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for detecting the environmental pollution caused by fertilization in view of the excess of organic fertilizer heavy metals Cu, Cd, Pb, Zn, etc. existing in organic agriculture. , Analysis and detection of soil characteristics and analysis of nutrient requirements for organic vegetable growth, and calculation of the maximum critical threshold of environmental pollution caused by fertilization schemes, which can be used to guide production practices, explore the optimal application of organic fertilizers in organic planting, and ensure that vegetables, etc. Product quality and safety and avoid heavy metal and mineral element pollution

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  • Method for detecting environmental pollution caused by fertilization
  • Method for detecting environmental pollution caused by fertilization

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preparation example Construction

[0024] (1) Preparation of the test sample solution: Weigh 5-8g of the sample, put it in a 400ml tall beaker, add 30ml of hydrochloric acid and 10ml of nitric acid, cover it with a watch glass and heat it on an electric heating plate. Remove the watch glass and continue heating to evaporate all the acid to nearly dryness to drive off the nitric acid. After cooling, add 50ml of hydrochloric acid solution, heat to dissolve, add 50ml of hydrochloric acid solution after cooling to room temperature, heat to dissolve, transfer to a 250ml volumetric flask after cooling to room temperature, dilute with water to the mark, mix well, dry filter, discard the first few milliliters of filtrate, stand-by.

[0025] (2) Preparation of blank solution: Except that no sample is added, other steps are the same as the preparation of sample solution.

[0026](3) Determination of heavy metal content: A: adopt spectrophotometry, according to Lambert Beer's law, at a certain wavelength, the absorbance ...

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Abstract

The invention discloses a method for detecting environmental pollution caused by fertilization, and establishes a critical threshold model for environmental pollution of organic fertilizers, by pre-detecting the content of various nutrients and heavy metal components in an organic fertilizer, and the loss of various nutrients and the heavy metal components in the crop planting environment, and combining with the demand for nutrients and the heavy metal components in crops, the amount of the organic fertilizer needed to meet the growth of crops is calculated, and the method can predict whetherthe application amount of the organic fertilizer brings heavy metal pollution to the planted soil or not. The method of the present invention is predictive, and the accuracy for assessing the heavy metal pollution caused by fertilization is as high as 100%, and the method can be used to pre-predict and adjust a fertilization scheme before fertilization, and avoids the problem of heavy metal pollution caused by fertilization and the problems of nitrogen saturation and P pollution.

Description

technical field [0001] The invention relates to the field of organic agriculture, in particular to a method for detecting critical thresholds of environmental pollution caused by the application of chicken manure, pig manure, organic fertilizers and the like and an application thereof. Background technique [0002] my country's animal husbandry produces the most fecal waste in the world, and a large part of it has not been properly treated and utilized, which has caused huge pollution to our country's ecological environment. It is an important means of reuse to process and reprocess livestock and poultry manure and make it into organic fertilizer for agricultural production. Organic fertilizer is an important material basis and an important fertilizer in agricultural production. The use of organic fertilizers for agricultural production is not only the material and energy cycle of agriculture itself, but also an effective way to purify the human environment and reuse resour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/3103
Inventor 江洪张金梦
Owner 上海多利农业发展有限公司
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