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Composite weedicide for green Chinese onion transplanting field and using method of composite weedicide

A compound herbicide and scallion technology, applied in the field of pesticides, can solve herbicide crops and environmental safety threats, difficult to solve the problems of "grass shortage" in scallion transplanted fields, increase the frequency of application and labor costs, etc., to improve systemic conduction capacity and Quick-acting, outstanding killing effect, and the effect of reducing labor costs

Active Publication Date: 2017-06-27
PUYANG VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the high frequency of weeds in the green onion transplanting field and the complexity of the grass, it is difficult to solve the problem of "grass shortage" in the green onion transplanting field with one herbicide.
Most of the current herbicides only have a single effect, such as herbicides for killing broad-leaved weeds are ineffective against grassy weeds, and vice versa; and closed herbicides are only effective against unearthed weeds, but not effective against unearthed weeds. invalid
If multiple single-purpose herbicides are used sequentially, it will not only increase the frequency of application and labor costs, but also pose a threat to crop and environmental safety if there are too many types of herbicides

Method used

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  • Composite weedicide for green Chinese onion transplanting field and using method of composite weedicide
  • Composite weedicide for green Chinese onion transplanting field and using method of composite weedicide
  • Composite weedicide for green Chinese onion transplanting field and using method of composite weedicide

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Experimental program
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Effect test

Embodiment 1

[0025] The compound herbicide for green onion transplanting field of the present invention is prepared by pendimethalin, oxyflufen, Tween 60, Eucalyptus oil, and ethyl acetate according to the following weight percentages:

[0026] Pendimethalin 33.4%, oxyfluorfen 6.6%, Tween 60 30%, Eucalyptus eucalyptus oil 5%, tar oleogalic acid 5%, glycerin 5%, ethyl acetate 15%.

[0027] Accurately weigh the above raw materials, firstly mix pendimethalin and oxyfluorfen evenly, then add ethyl acetate, Tween 60, Eucalyptus eucalyptus oil, tar oleaginic acid, and glycerol in sequence; Stir while adding raw materials, stop stirring when there is no precipitation, no floating matter, no stratification, let stand for 1-2 hours, bottle, constant volume, seal, label, etc., and store in a cool place.

[0028] The method that the composite herbicide prepared by the present invention is used in the green onion transplanting field is:

[0029] In the first stage, after the scallions are transplante...

Embodiment 2

[0032] The composite herbicide of the present invention has been used in the green onion transplanting field for two years, and the detection results of the residues of pendimethalin and oxyfluorfen in the green onion white and the soil cultivation layer are as follows:

[0033] Gas chromatography was used to detect the residual amount of pendimethalin (mg / kg) in scallions. The results are shown in Table 1 below:

[0034] Table 1

[0035]

[0036] my country and the International Codex Alimentarius Commission have not formulated the maximum residue limit (RML) of pendimethalin in scallions, while the US EPA stipulates that the residue of pendimethalin in potatoes is 0.1 mg / kg, and Japan and South Korea stipulate that pendimethalin residues in potatoes are 0.1 mg / kg. Ling Ling residues in potatoes 0.2mg / kg. As can be seen from Table 1, the residual amount (mg / kg) of pendimethalin in scallion scallions 2-3 weeks after the compound herbicide medication of the present inventio...

Embodiment 3

[0050]The herbicidal effect of the compound herbicide prepared by the present invention in the green onion transplanting field is shown in the following table 5:

[0051] table 5

[0052]

[0053] The control group used the conventional herbicide Gaicao Neng, and the weed density plants / m 2 .

[0054] As can be seen from Table 5, the compound herbicide prepared by the present invention has a herbicidal effect 2 weeks after the application, and the weed reduction rate is about twice as high as that of the conventional drug Gaicao Neng, and the control of weeds is up to 94.9%. significantly.

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Abstract

The invention discloses a composite weedicide for a green Chinese onion transplanting field and a using method thereof. The composite weedicide is prepared from the following components in percent by weight: 33.4% of pendimethalin, 6.6% of oxyfluorfen, 30% of an emulsifier, 5% of a penetrating agent, 5% of an antioxidant, 5% of an antifreezing agent and 15% of a cosolvent. Through scientific formulation of the closed weedicide pendimethalin widely used in planting industry and the oxyfluorfen with a weed killing effect, under the assistance of blue eucalyptus oil with relatively good penetration, the penetration of the weedicide is greatly improved and the uptake and translocation and the fast-acting property of the weedicide are improved; Tween 60 and ethyl acetate can dissolve and emulsify the pendimethalin and the oxyfluorfen very well, and pyrogallic acid and glycerol can significantly improve the stability of the composite weedicide. Besides, the composite weedicide provided by the invention is convenient to use, has a significant effect of killing all kinds of weeds, and is safe and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a compound herbicide for green onion transplanting fields, and also relates to a method for using the compound herbicide. Background technique [0002] Scallions are one of the important condiment vegetables on people's tables. They are almost a must for every meal, and the market demand is relatively large. Scallions are cultivated on a large scale in various parts of our country. With the transfer of land, the cultivation of scallions tends to become more specialized and large-scale. [0003] Green onions in northern my country are mainly planted in furrows in autumn, transplanted in early summer and harvested in early winter, which has gone through three seasons: summer, autumn and winter. Since scallions are dwarf crops, they grow slowly in summer, and the ground of the transplanted field has better ventilation and light transmission conditions. During the growing season ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N33/22A01N33/18A01P13/00A01G1/00A01G13/00
CPCA01G13/00A01G22/00A01N33/18A01N33/22A01N2300/00
Inventor 张志轩汪妮李涵乔趁峰王海英吴俊琢管志涛谷延泽孙小玲吴春昊王俪睿刘瑞锋韩晓红赵清华
Owner PUYANG VOCATIONAL & TECHN COLLEGE
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