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A method for planting tobacco in difenoconazole-contaminated soil and reducing its residue

A technology for difenoconazole and polluted soil, applied in botany equipment and methods, soil preparation methods, tobacco cultivation, etc., can solve problems such as difenoconazole residues, achieve easy operation, high surface energy, low Will produce the effect of secondary pollution

Active Publication Date: 2019-03-29
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a method for planting tobacco in difenoconazole-contaminated soil and reducing its residue, so as to solve the problem of difenoconazole residue in tobacco

Method used

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  • A method for planting tobacco in difenoconazole-contaminated soil and reducing its residue
  • A method for planting tobacco in difenoconazole-contaminated soil and reducing its residue
  • A method for planting tobacco in difenoconazole-contaminated soil and reducing its residue

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Experimental program
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Effect test

experiment example

[0031] Aiming at the phenomenon that a large number of tobacco rods are discarded in the tobacco area, the invention is carried out at the Longgang scientific research and test base of Guizhou Tobacco Science Research Institute. After the tobacco rods are collected at the base, they are concentrated in the air to dry. Use a hay cutter to crush the tobacco rods to about 1 cm. When the moisture content of the tobacco powder is ≦15%, use a combined biochar granule carbonization furnace (patent number ZL201110073104.1) for carbonization. The specific operation process is as follows: put the smoke powder into the furnace body, the initial charging amount should cover the burner by 20‒30 cm, and use combustibles such as diesel to ignite the igniter in the ignition plate of the burner. When the material is ignited, it will continue to ignite spontaneously without an external heat source. A digital temperature controller (XMT-121 type) is used for temperature monitoring, and the temp...

Embodiment 1

[0046] Example 1: The reduction effect of biochar application on the residues of difenoconazole in flue-cured tobacco roots:

[0047] With the increase of biochar application rate, the residual amount of difenoconazole in the root system of flue-cured tobacco (K326) gradually decreased, and there was a significant difference (Pfigure 1 shown).

Embodiment 2

[0048] Example 2: The effect of biochar application on the reduction of difenoconazole residues in flue-cured tobacco stems:

[0049] With the increase of biochar application rate, the residual amount of difenoconazole in flue-cured tobacco (K326) stems gradually decreased, except that there was no significant difference between the carbon-soil weight ratio of 1:100 and no carbon application (blank control). There were significant differences (P figure 2 shown).

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Abstract

The invention discloses a method for planting tobaccos in difenoconazole polluted soil and reducing the residual quantity. According to the method, forestry and agricultural residues are used as raw materials, a combined type carbonization stove is adopted to make charcoal, then the charcoal and the difenoconazole polluted soil are mixed according to the appropriate weight ratio to make a polluted charcoal-soil mixture, and a well-cellar type plantlet transplanting method is adopted to perform tobacco planting. The charcoal used by the method has loosen and porous characteristics, is large in specific surface area, high in surface energy and rich in surface functional group and has very strong cation exchange capability (CEC), and the characteristics enable the charcoal to have good adsorption properties. After the charcoal is applied to the soil, the adsorption capacity of the charcoal-soil mixture to difenoconazole and other pesticides is improved, the purpose of reducing the effectiveness of pollutants from the source is achieved, and the charcoal has the good reducing effect on the difenoconazole and other pesticide residues in tobaccos. In addition, the charcoal can further improve the soil quality and productivity, and accordingly a good ecological environment is provided for growth of the tobaccos and other crops.

Description

technical field [0001] The invention relates to the technical field of reducing pesticide residues in tobacco, in particular to a method for planting tobacco in difenoconazole-contaminated soil and reducing the residues. Background technique [0002] Tobacco is a kind of smoking agricultural product. For sustainable development and health considerations, people pay more and more attention to the safety of this product. Some developed countries have established regulations on the maximum limits of pesticide residues in tobacco and tobacco products. For example, Germany established the recommended maximum limits of 18 pesticides in cigarettes and shredded tobacco and 71 pesticide residues in tobacco raw materials as early as 1986; In 1987, the Ministry of Foreign Affairs also formulated the limit indicators for imported tobacco pesticide residues, including 19 kinds of pesticides. Although my country has not formulated the maximum limit of tobacco pesticide residues, the Stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/45A01B79/02C09K17/04C09K101/00
CPCA01B79/02A01G22/00C09K17/04C09K2101/00
Inventor 程建中潘文杰李心清陈懿高维常唐源
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI