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Natural herbicide composition and application thereof

A technology of natural herbicides and compositions, applied in the field of pesticides, can solve problems such as low toxicity and impact on crop safety, and achieve good herbicidal effects.

Inactive Publication Date: 2016-02-24
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Nonanoic acid is a natural product of several plants in the Geranaceae family. It belongs to fatty acid or carboxylic acid compounds. It has good herbicidal activity, low toxicity, and is friendly to the environment. certain influence

Method used

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preparation example Construction

[0032] Above-mentioned a kind of natural herbicide composition, wherein said refined wood vinegar is prepared by the following steps:

[0033] a. Dry distillation of raw materials: dry distillation of biomass selected from wood, bamboo and crop stalks, export gas, and obtain wood vinegar stock solution after condensation;

[0034] b. Precipitation and impurity removal: the wood vinegar stock solution obtained in step a is left to stand for 1 to 6 months, and the clarified upper layer of wood vinegar is taken;

[0035] c, rectification under reduced pressure: the upper layer wood vinegar obtained in step b is distilled under reduced pressure at 60-100° C. and 0.08-0.3 MPa until the distillate volume is 70-95% of the original volume to obtain refined wood vinegar.

Embodiment 1

[0038] According to the following ingredients by weight percentage: 1% of nonanoic acid, 90% of refined wood vinegar, 5% of emulsifier fatty alcohol polyoxyethylene ether, and the balance is water, mixed, and configured as the natural herbicide of the present invention.

[0039] Wherein, refined wood vinegar is prepared by the following steps:

[0040] a. Dry distillation of raw materials: dry distillation of biomass selected from wood, bamboo and crop stalks, export gas, and obtain wood vinegar stock solution after condensation;

[0041] b. Precipitation and impurity removal: the wood vinegar stock solution obtained in step a is left to stand for 1 to 6 months, and the clarified upper layer of wood vinegar is taken;

[0042] c, rectification under reduced pressure: the upper stratum wood vinegar obtained in step b is distilled under reduced pressure at 60° C. and 0.3 MPa until the distillate volume is 75% of the original volume to obtain refined wood vinegar.

[0043] Nonano...

Embodiment 2

[0046] According to the following ingredients by weight percentage: 90% nonanoic acid, 1% refined wood vinegar, and the balance is surfactant styrylphenyl polyoxyethylene ether, which are mixed and configured into the natural herbicide of the present invention.

[0047] Wherein, refined wood vinegar is prepared by the following steps:

[0048]a. Dry distillation of raw materials: dry distillation of biomass selected from wood, bamboo and crop stalks, export gas, and obtain wood vinegar stock solution after condensation;

[0049] b. Precipitation and impurity removal: the wood vinegar stock solution obtained in step a is left to stand for 1 to 6 months, and the clarified upper layer of wood vinegar is taken;

[0050] c, rectification under reduced pressure: the upper strata wood vinegar that b step obtains is distilled under reduced pressure at 100 ℃, 0.08MPa, until the distillate volume is 95% of original volume, obtains refined wood vinegar.

[0051] Nonanoic acid is obtaine...

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Abstract

The invention belongs to the field of pesticides, and particularly relates to a natural herbicide composition and application thereof. The natural herbicide composition is prepared from the following active ingredients in parts by weight: 1-90 parts of n-nonanoic acid and 1-90 parts of a pyroligneous solution. Compared with the conventional artificially synthesized herbicide sold in the market, the prepared natural herbicide composition provided by the invention has the characteristics of being safe, reliable, green, environment-friendly and better in weeding effect, and the like, and the prepared natural herbicide composition provided by the invention can be used for effective weeding.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a natural herbicide composition and its application. Background technique [0002] With the continuous improvement of people's living standards and the further strengthening of environmental protection awareness, the development of pollution-free agriculture has attracted more and more attention. Therefore, it is compatible with the environment, has low toxicity to non-target organisms, is safe, and toxic organisms are not easy to develop resistance to it. Toxic components can be degraded quickly in the natural environment, and biogenic pesticides without residue problems have broad application prospects in pollution-free agricultural production and green food production, and are an important direction for pesticide research and development today. [0003] Among them, representative biogenic pesticides include wood vinegar, nonanoic acid, and the like. Wood vinegar is a na...

Claims

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Application Information

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IPC IPC(8): A01N61/00A01P13/00A01N37/02
Inventor 何其明白霜杨锡良任丹
Owner CHENGDU NEWSUN CROPSCI
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