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Plant source pesticide for cucumbers and preparation method of pesticide

A technology of botanical pesticides and cucumbers, applied in the field of botanical pesticides, can solve problems such as environmental pollution and high residues, achieve the effects of wide sources, increase extraction yield, and realize reuse

Inactive Publication Date: 2018-06-22
SHANGHAI NONGLE BIOLOGICAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the long-term and large-scale use of chemical pesticides, the adverse effects of high residues and environmental pollution have become increasingly prominent

Method used

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  • Plant source pesticide for cucumbers and preparation method of pesticide
  • Plant source pesticide for cucumbers and preparation method of pesticide
  • Plant source pesticide for cucumbers and preparation method of pesticide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A botanical pesticide for cucumbers. The raw materials are leaves, stems, and pods of leguminous plants. After two extractions, highly active substances are obtained, which can be used to prevent and control cucumber powdery mildew, cucumber downy mildew, and cucumber gray mold. . Concrete preparation method comprises the following steps:

[0032] (1) The leaves, stems and pods of leguminous plants are ground and pulverized, and passed through a 40-mesh sieve.

[0033] (2) Add ethanol to soak in a ratio of 1:1 by weight, and the soaking time is 60 minutes.

[0034] (3) Stir and mix the soaking solution with a glass rod, select a power of 500W, and ultrasonically for 30min.

[0035] (4) Take the supernatant, centrifuge at 5000rpm for 30min, and filter the centrifuged supernatant with two layers of filter paper.

[0036] (5) The filtrate was distilled with an ultra-low temperature rotary evaporator at 0° C. to 4° C. for 60 min to obtain the extract I.

[0037] (6) In ...

Embodiment 2

[0043] A botanical pesticide for cucumbers. The raw materials are leaves, stems, and pods of leguminous plants. After two extractions, highly active substances are obtained, which can be used to prevent and control cucumber powdery mildew, cucumber downy mildew, and cucumber gray mold. . Concrete preparation method comprises the following steps:

[0044] (1) The leaves, stems and pods of leguminous plants are ground and pulverized, and passed through a 60-mesh sieve.

[0045] (2) Add ethanol to soak in the ratio of 1:0.8 by weight, and soak for 45 minutes.

[0046] (3) Stir and mix the soaking solution with a glass rod, select a power of 400W, and ultrasonically for 20min.

[0047] (4) Take the supernatant, centrifuge at 4000rpm for 20min, and filter the centrifuged supernatant with two layers of filter paper.

[0048] (5) The filtrate was distilled with an ultra-low temperature rotary evaporator at 0° C. to 4° C. for 45 minutes to obtain the extract I.

[0049](6) In the ...

Embodiment 3

[0055] A botanical pesticide for cucumbers. The raw materials are leaves, stems, and pods of leguminous plants. After two extractions, highly active substances are obtained, which can be used to prevent and control cucumber powdery mildew, cucumber downy mildew, and cucumber gray mold. . Concrete preparation method comprises the following steps:

[0056] (1) The leaves, stems and pods of leguminous plants are ground and pulverized, and passed through an 80-mesh sieve.

[0057] (2) Add ethanol to soak in the ratio of 1:0.5 by weight, and soak for 30 minutes.

[0058] (3) Stir and mix the soaking solution with a glass rod, choose a power of 300W, and ultrasonically for 15min.

[0059] (4) Take the supernatant, centrifuge at 3000rpm for 15min, and filter the centrifuged supernatant with two layers of filter paper.

[0060] (5) The filtrate was distilled with an ultra-low temperature rotary evaporator at 0° C. to 4° C. for 30 minutes to obtain the extract I.

[0061] (6) In th...

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Abstract

The invention relates to a plant source pesticide for cucumbers and a preparation method of the pesticide. The preparation method comprises the following steps: grinding leaves, stems or pods of leguminous plants, carrying out sieving with a sieve of 40-80 meshes; adding an organic solvent I according to a weight ratio of 1:(0.5-1) for soaking, and carrying out soaking for 30-60min; uniformly stirring the soaking solution, carrying out ultrasonic treatment, collecting the supernatant, and carrying out centrifuging, filtering and distilling to obtain an extract I; adding a biological enzyme into the extract according to a weight ratio of 1:(0.02-0.05) and carrying out an enzymolysis reaction; adding an organic solvent II into the enzymatic hydrolysate according to a proportion of 1:(0.4-0.8) and carrying out extraction for 30-60min; collecting the upper extract, carrying out centrifuging, filtering, and distilling; and drying the product obtained after the distilling for 24-48 hours ina vacuum drying oven to obtain the plant source pesticide product. Compared with the prior art, the plant source pesticide provided by the invention has the characteristics of low pesticide cost, goodmedicine effect, environmental friendliness and the like.

Description

technical field [0001] The invention relates to botanical pesticides, in particular to botanical pesticides for cucumbers and a preparation method thereof. Background technique [0002] Botanical pesticides refer to pesticides developed using plant resources, and refer to pesticides made directly from natural active substances produced by plants or from certain parts of plants. Botanical pesticides are similar to biological pesticides in many aspects, but they are obviously different from general chemical pesticides. my country has the advantages of botanical pesticide resources and research and development, and already has preparations such as matrine and pyrethrum. Pyrethrum preparations have been at the forefront of the world. The sum of domestic and foreign botanical fungicide products is also not much. At present, several commercialized botanical fungicide varieties have been put into the market abroad, such as Zeneca’s azoxyst robin and BASF’s kresox imm ethyl; Neem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/20A01P3/00
CPCA01N65/00A01N65/20
Inventor 郝祥蕊姚陈伟袁粉兰张红艳
Owner SHANGHAI NONGLE BIOLOGICAL PROD
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