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A comprehensive restoration method for dichloroquine phosphate herbicide residues in tobacco fields

A dichloroquine phosphoric acid and repair method technology, which is applied in the agricultural field, can solve the problems of little effect, achieve good effect, increase yield and quality, and reduce cost

Inactive Publication Date: 2017-03-29
TOBACCO RES INST CHIN AGRI SCI ACAD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no radical cure for tobacco fields that are at risk of quinclorac injury, and various chemical restoration measures except for prevention have had little effect

Method used

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  • A comprehensive restoration method for dichloroquine phosphate herbicide residues in tobacco fields
  • A comprehensive restoration method for dichloroquine phosphate herbicide residues in tobacco fields
  • A comprehensive restoration method for dichloroquine phosphate herbicide residues in tobacco fields

Examples

Experimental program
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Effect test

Embodiment example 1

[0026] Through the pot experiment in the greenhouse, after adding quinclorac (soil content reaches 1.50 mg / kg), different restoration measures CK1 (adding quinclorac, no restoration control), CK2 (no addition of quinclorac acid control), T1 (add 1% quicklime to the soil), T2 (add 1% straw biochar), T3 (1% quicklime + 1% straw biochar), T4 (1% quicklime + 1% Straw biochar + foliar spraying of gibberellin (10 mg / kg), potassium dihydrogen phosphate and mancozeb mixture (1000 times liquid), spraying twice at intervals of 7 days). The agronomic traits and biomass of tobacco in flat top stage were investigated, and the residual amount of quinclorac in soil was detected.

[0027] The results of the study showed that from the agronomic traits (Table 1), different restoration measures were helpful to the growth and development of tobacco, and increased the plant height, number of effective leaves and leaf area of ​​three leaf positions, among which T4 treatment had the best effect, ba...

Embodiment example 2

[0035] In a typical tobacco-rice rotation area in Xuancheng, Anhui Province, a comparison test was carried out between this method and the conventional method on tobacco field soil with quinclorac residue (0.25 mg / kg residue). The test was divided into 4 treatments: no restoration (CK), agronomic restoration (T1), chemical restoration (T2) and the comprehensive restoration method described in the present invention (T3). Agronomic restoration is carried out by means of deep plowing, drying, irrigation and drainage, chemical restoration is improved by combining biochar with quicklime, and comprehensive restoration adopts the comprehensive restoration method of the present invention. Among them, deep plowing, sun-drying, intertillage depth 30 cm, irrigation and drainage twice. The chemical remediation method uses 1500 kg / hm of quicklime powder evenly spread on the soil surface 2 , straw biochar 1500 kg / hm 2 The improved method of the present invention combines soil surface appl...

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Abstract

The invention provides a comprehensive repair method for residual quinclorac herbicide in a tobacco field, and belongs to the technical field of herbicide residual soil treatment and repair. The method comprises the steps of detecting quinclorac in the soil after harvesting grains; deeply harrowing to sun the upturned soil in case of soil exceeding the standard (more than 0.05mg / kg); irrigating water to promote discharging one month before transplanting tobacco seedlings; applying quick lime or dolomite powder to the field surface under proper soil moisture content in order to achieve acid-base neutralization; applying straw biochar or carbon based organic fertilizer to the bottom of the ridge while ridging and fertilizing the flue-cured tobacco in order to physically absorb; spraying the leaf surfaces through a mixed solution of gibberellin (920), monopotassium phosphate and mancozeb or zineb in case of quinclorac chemical injury (the leaves are deformed in rat-tail shape) occurring on the flue-cured tobacco in the resettling stage or vigorous growing stage of the flue-cured tobacco so as to relieve or remove chemical injury. With the adoption of the method, the residual quinclorac in the soil of the tobacco field can be removed; in addition, the acidity of the soil can be reduced; the tobacco soil-borne disease can be prevented; the soil health can be promoted; the tobacco output and quality can be increased.

Description

technical field [0001] The invention belongs to the field of agriculture, and in particular relates to a comprehensive restoration method for dichloroquine phosphate herbicide residues in tobacco fields. Background technique [0002] The paddy and dry rotation of tobacco and rice is a typical flue-cured tobacco planting method in southern my country, which has played a huge role in reducing the pests and diseases of the two crops, improving soil fertility, and increasing the income of tobacco and grain. However, with the extensive application of herbicides in paddy fields, especially the extensive application of quinclorac, a highly effective and selective herbicide for controlling barnyard grass, its residues have had a serious impact on the growth and development of subsequent tobacco crops. The main field manifestations are: Tobacco leaves are malformed, yellow and albino, leaf margins roll down, and leaves shrink toward the back, resulting in long and narrow leaves that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/06A01B79/02
CPCA01B79/02A01G7/06A01G22/00
Inventor 张继光张忠锋张伟峰程森蔡宪杰卢晓华王传义梁洪波朱启法薛林
Owner TOBACCO RES INST CHIN AGRI SCI ACAD
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