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Soil heavy metal passivation agent for vegetable field

A heavy metal passivator, vegetable field technology, applied in soil conditioning materials, restoration of polluted soil, chemical instruments and methods, etc., can solve problems such as the reduction of the effectiveness of heavy metals, improve quality and commodity performance, and restore ecological functions. and industrial functions, the effect of facilitating promotion

Inactive Publication Date: 2008-12-17
INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fly ash treatment can increase the proportion of heavy metals in residue state in compost, and with the increase of compost maturity, each heavy metal will transfer from water-soluble state and exchange state to carbonate binding state and residue state, and the effectiveness of heavy metals on plants will decrease.

Method used

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  • Soil heavy metal passivation agent for vegetable field
  • Soil heavy metal passivation agent for vegetable field

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Conclusions are drawn from the following experiments.

[0027] Add the cadmium pollution level to the soil to ten times the safe level, and then use this artificially polluted soil to do pot experiments, plant the cruciferous mustard, and add different reagents to the soil at the same time, repeat three times for each experiment, analyze the above-ground parts of the harvested plants and In the underground part, the cadmium content was determined. The results of the analysis and processing showed that the passivating agent can significantly reduce the cadmium content in the aboveground parts of the plants. Different lowercase letters after the numbers in the table indicate a significant level, and different uppercase letters indicate an extremely significant level. Specific detailed tests and tests at different levels of each factor have also been completed, and the results basically show that the passivation effect of the passivator on cadmium has reached a very signif...

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Abstract

The invention discloses a heavy metal passivator for vegetable field soil. The components of the heavy metal passivator comprise burnt lime, organic fertilizer for heavy metal removal and expanded perlite. The selected expanded perlite has the particle diameter ranging from 0.5 to 1.5cm preferentially. The heavy metal passivator for vegetable field soil provided by the invention passivate heavy metals, which mainly include plumbum, cadimium, chrome, copper, zinc, and the like, causing mild contamination in the vegetable field soil so that safe vegetable products can be produced on the soil slightly contaminated, the ecological function and industry function of the vegetable field soil can be recovered; therefore, the quality and the merchantability of the vegetables are improved. The materials selected for the invention are all common and easy to prepare and have low cost, which is convenient for being popularized. Experiments prove that the heavy metal passivator has extremely remarkable passivation effect on heavy metals as well as has very favorable ecological and economic benefits.

Description

Technical field: [0001] The invention relates to agricultural environmental protection, in particular to a soil heavy metal passivator. technical background [0002] The agricultural resource environment is not only an important material basis for agricultural production, but also directly related to the quality and safety of agricultural products, affecting human health, related to the frequency and intensity of agricultural disasters, and plays a decisive role in the sustainable development of agriculture and rural economy. role. In this context, soil pollution in farmland and vegetable fields has attracted more and more attention. Heavy metals and ecological environment problems have seriously endangered sustainable economic development and biological health. The study found that there are three main factors that cause soil pollution in farmland and vegetable fields: one is that the pollution particles caused by industrial areas and areas with intensive human activities...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C09K17/00
Inventor 蒋光月朱宏斌王丽李帆何传龙万水霞
Owner INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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