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Anti-rice heavy metal pollution method

A technology of heavy metals and rice, applied in the fields of soil preparation methods, horticultural methods, chemical instruments and methods, etc., can solve the problems of difficult balanced implementation, labor-intensive, high cost, etc.

Inactive Publication Date: 2016-03-16
刘梅锡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The third defect is that most of the cadmium-contaminated paddy fields are regional paddy fields that are polluted. According to the existing technology, the method of artificially applying lime at the tillering stage is labor-intensive and expensive, and it is difficult to implement in a balanced manner.
According to the method of applying lime and soil remediation agent to the paddy field during the tillering stage of rice, there is no technical report on the large-scale and automatic control of heavy metals in the paddy field without artificial or non-mechanical methods;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In 2014, in the paddy field of a farmer surnamed Peng in Juntianwan Village, Hanpu Community, Yuelu District, Changsha, an experiment was carried out to prevent and control cadmium in late rice. The soil data of the test paddy field was tested, and the pH value was 5.3, and the total cadmium in the soil was 0.56mg / kg. The cadmium content in polished rice of late rice is 0.46mg / kg.

[0031] The test plan is to separate a 0.6-mu paddy field into 3 test sample fields and 1 control sample field with paddy soil, cover the isolation ridge with plastic film to prevent water seepage, set up irrigation water inlet and outlet respectively, and the irrigation water flow does not collude with each other.

[0032] After filling water with open container equipment, add 60 kg of quicklime powder to the water per mu of paddy field. Before plowing and raking the field, use a mud pump to mix the water and lime evenly through the hose, then pump it into the test paddy field, and drain the ...

Embodiment 2

[0035] In mid-June 2014, a middle-season rice rice arsenic control experiment was carried out in a rice field of a farmer surnamed Deng in a town of Chenzhou City, Hunan Province. According to the soil data, the pH value was 6, and the total soil arsenic was 41mg / kg.

[0036] The test plan is to separate a 1-mu paddy field into 3 test fields and 1 control field with paddy soil, set up irrigation water inlet and outlet respectively, and test samples and control samples that the irrigation water flow does not collude with each other.

[0037] According to the routine of farmers, plowing operation, fertilizer application and seedling transplanting, there is no difference between the management test sample and the control sample in the early stage of tillering. When the tillering field is covered with water and irrigated, silicon fertilizer is applied per mu in the irrigation canal at the water inlet of the test sample field. Calculate the dosage of 30 kg + 80 kg ferrous sulfate, a...

Embodiment 3

[0040] In April 2015, in the paddy field of a farmer surnamed Wang in Chunhuashan Town, Changsha County, a test on the control of cadmium in early rice was carried out. The test plan is to separate a 0.3-mu paddy field with paddy soil into a test sample field and a control sample field. The isolation ridge is covered with plastic film to prevent water seepage, and the irrigation water inlet and outlet are respectively set up. The irrigation water flow does not collude with each other.

[0041] When rewatering after tillering and drying, the test field is measured with 60 kg of quicklime powder + 12 grams of sodium selenite per mu of paddy field. After the weight of the material is divided into 3 equal parts, each part is added to irrigation water for a flood irrigation operation. After the water and lime+sodium selenite were evenly mixed, it flowed into the experimental paddy field and was managed in three cycles according to flood irrigation-shallow water-humidity. The third f...

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Abstract

An anti-rice heavy metal pollution method comprises the following steps: adding lime and anti-rice heavy metal pollution agricultural capital goods into irrigation water, thus allowing the water to provide irrigation and anti-rice heavy metal pollution effects. The water is irrigated into rice field so as to uniformly and continuously control the rice heavy metal pollution. Compared with the prior art, the novel method can save an operation step in which people or machine need to enter the filed for applying lime; the novel method is high in control effect, low in cost, simple and reliable, suitable for farmer single application, and can be used for large scale machinery application in irrigation areas.

Description

technical field [0001] The present invention relates to the prevention and treatment of rice heavy metal pollution, in particular to a method of adding lime to irrigation water, adding agricultural materials and commodities for the prevention and control of rice heavy metal pollution, and a method for preventing and controlling rice heavy metal pollution by regulating rice field irrigation in irrigation water . Background technique [0002] The economic development of modern society, especially the rapid development of modern industry has brought about environmental pollution. Many developing countries, including China, are no exception to the pressure of environmental pollution. Due to the development of modern industry, the pollution of the earth's environment by heavy metals has affected the biosphere. Rice is one of the food crops that are most likely to be polluted by heavy metals because of its biological characteristics. The heavy metal pollution of rice usually refe...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01B79/02A01G7/00C09K17/06C09K101/00
CPCA01B79/02A01G7/00A01G22/00C09K17/06C09K2101/00
Inventor 刘梅锡刘洋胡科洋吴科帆
Owner 刘梅锡
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