Ligularia virgaurea extract species coating as well as preparation method and application thereof

A technology of extracts and species, applied in the field of multi-effect biological seed coating agent and its preparation, can solve the problem of unsatisfactory storage stability, application stability and general applicability, poor development and utilization of seed coating agent, Insufficient research on membrane materials and additives, etc., to achieve the effects of improving dispersion and bioavailability, extending the duration of application, and improving insecticidal and antibacterial virulence

Pending Publication Date: 2022-04-12
GANSU ACAD OF SCI INST OF BIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(1) The active ingredients of insecticide and antibacterial are still mainly chemical pesticides, which are likely to cause problems such as pesticide residues in agricultural products, cumulative environmental pollution, and increased resistance of diseases and insect pests, and poor sustainable development
(2) Insufficient research on film-forming materials and additives, resulting in low coating rate, easy film peeling, and unsatisfactory application effect
(3) The dosage form is relatively simple, mainly suspending agent, and other new dosage forms with special functions, high efficiency, and convenient transportation and storage are less developed
(4) The active ingredients of biological seed coating agents are mainly antagonistic microorganisms, which do not have insecticidal activity, and because the microorganisms themselves are easily affected by factors such as temperature, humidity, soil microecology and chemical pesticides, their storage stability and application stability and universality are not ideal
(5) There are many types of biopesticide resources, and the seed coating agent has not been well developed and utilized, and the research and application are insufficient

Method used

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  • Ligularia virgaurea extract species coating as well as preparation method and application thereof
  • Ligularia virgaurea extract species coating as well as preparation method and application thereof
  • Ligularia virgaurea extract species coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12

[0027] 1. Example 1-12: See Table 1 for the distribution ratio of each component of the extract of Ligularia chinensis and the coating agent

[0028] Table 1: Example 1-12 The distribution ratio of each component of the extract of Ligularia chinensis and the coating agent

[0029]

[0030] Note: Prepare 100kg.

Embodiment 13

[0031] Two, embodiment 13, a kind of preparation method of Ligularia chinensis extract species coating agent, taking the formula of embodiment 4 as an example, comprises the following steps:

[0032] 1. Preparation method of effective active ingredients

[0033] (1) The preparation method of the extract of Ligularia praecox

[0034] On August 3, the leaves of Ligularia chinensis were collected, quickly dried in the shade at 32±1°C, crushed, and sieved through a 15-mesh sieve to obtain coarse powder of Ligularia sativa leaves. Put the coarse powder of Ligularia cloverleaf leaves and the extraction solvent in the extraction container at a mass volume ratio of 1:2, soak at room temperature for 1.5 days, then ultrasonically treat for 2 hours, filter, and collect the filtrate; extract 4 times in the same method, The filter residue was washed 4 times with a small amount of extraction solvent; the filtrates were combined, filtered to remove impurities, and the solvent was recovered ...

Embodiment 14

[0041] Example 14, a method for preparing a seed coating agent of the extract of Ligularia chinensis, taking the formula of Example 11 as an example, includes the following steps:

[0042] 1. Active ingredient preparation method

[0043] (1) The preparation method of the extract of Ligularia praecox

[0044] In mid-July, collect the leaves of Ligonia chinensis, quickly dry them in the shade at 30±1°C, crush them, and pass through a 10-mesh sieve to obtain the coarse powder of stems and leaves of Ligia twigs. Put the coarse powder of Ligularia cloverleaf leaves and the extraction solvent in the extraction container at a mass volume ratio of 1:1, soak at room temperature for 1 day, then ultrasonically treat for 1 hour, filter, and collect the filtrate; extract 3 times in the same method, The filter residue was washed 3 times with a small amount of extraction solvent; the filtrates were combined, filtered to remove impurities, and the solvent was recovered under reduced pressure...

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PUM

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Abstract

The invention provides a ligularia virgaurea extract seed coating agent, which is mainly composed of 60-85% of an effective active component and 15-40% of an auxiliary agent, and the auxiliary agent is mixed and ground and then is mixed with a nanocrystallization effective active component to form the nanometer wettable powder seed coating agent. Insect diseases and insect pests in target plant seeds and underground insect diseases and insect pests in the seedling stage can be effectively prevented and controlled, and the seed emergence rate and survival rate are increased; the active ingredients are nanocrystallized, so that the dispersity and the bioavailability of the composition are improved, and the lasting period is prolonged; the solid preparation is good in stability and convenient to store and transport; biological source effective active ingredients are green and environment-friendly. The seed coating can be applied to seeds of unshelled vegetables such as cucumbers and peppers, tuber seeds such as potatoes and crop seeds such as corns.

Description

technical field [0001] The invention belongs to the field of biopesticides, and specifically relates to a multi-effect biological seed coating agent with the extract of Ligularia fruticosa as the main active ingredient, its preparation method and application technology. Background technique [0002] Huang Broom Liwu ( Ligularia virgaurea ) belongs to Compositae ( Compositae ) Ligularia ( Ligularia Cass. ) perennial herbaceous plants. It is widely distributed in the alpine pastures at an altitude of 2800m to 4700 m on the eastern edge of the Qinghai-Tibet Plateau. Especially in the past ten years, its population has rapidly expanded on the grasslands of Gansu, Sichuan and Qinghai, forming dominant species communities, and becoming the most important cause of local grassland degradation. Indicative poisonous weed. The stems and leaves of Lignus chinensis are rich in terpenoids, flavonoids, sterols, esters, aromatics, alkaloids, phenols and lignin compounds, among which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N65/12A01P3/00A01P1/00A01P7/04
Inventor 刘锦霞李晶丁品李娜付麟雲张建军武建荣
Owner GANSU ACAD OF SCI INST OF BIOLOGY
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