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Extraction liquid for killing the larvae of Cyclops chinensis and its preparation method and application

A kind of technology of human-stained lampshade and extract solution, which is applied in the environment-friendly field, can solve the problems of endangering human and animal health, ecological pollution, pesticide residues, etc., and achieves the effect of low cost, easy operation and easy acquisition

Inactive Publication Date: 2018-10-16
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main method of preventing and controlling the moth is the use of chemical insecticides. However, the use of insecticides will not only cause pesticide residues on plants, endanger the health of humans and animals, but also enter the soil and rivers through the erosion of rainwater. cause long-term ecological pollution

Method used

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  • Extraction liquid for killing the larvae of Cyclops chinensis and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Gather the leaves of Wedelia chinensis, dry them in the sun, and smash them into pieces. 100 g of dry leaves were soaked in 1 L of tap water, stirred frequently during the period, soaked for 48 h, and then filtered with gauze to obtain the extract of Wedelia chinensis with a concentration of 100 g / L. The prepared wedelia extract solution is directly sprayed on the crops damaged by the larvae of the slug moth, which is suitable for the young larvae of the slug moth. Spraying the extract of Wedelia chinensis is not optional in rainy weather to prevent the extract from being washed away by rain. Spray once a week, and after about three times, the young larvae of the killing moth can be killed. If the larvae are large, continue spraying for 2-3 times to achieve the effect of killing the larvae of the moth moth. Through experimental verification, in this embodiment, the mortality rate of the larvae of the scutellaria is about 58%.

Embodiment 2

[0017] Embodiment 2: Gather the leaves of Wedelia chinensis, dry them in the sun, and break them into pieces. Take 200 g of dry leaves and soak them in 1 L of tap water, stir frequently during this period, soak them for 72 h, and filter them with gauze to obtain the extract of Wedelia chinensis with a concentration of 200 g / L. The prepared wedelia extract solution is directly sprayed on the crops damaged by the larvae of the slug moth, which is suitable for the young larvae of the slug moth. Spraying the extract of Wedelia chinensis is not optional in rainy weather to prevent the extract from being washed away by rain. Spray once a week, and after about three times, the young larvae of the killing moth can be killed. If the larvae are large, continue spraying for 2-3 times to achieve the effect of killing the larvae of the moth moth. Through experimental verification, in this embodiment, the mortality rate of the larvae of the slug moth is about 75%.

Embodiment 3

[0018] Embodiment 3: Gather the leaves of Wedelia chinensis, dry them in the sun, and smash them into pieces. Take 300 g of dry leaves and soak them in 1 L of tap water, stir frequently during this period, soak them for 72 h and filter them with gauze to obtain the extract of Wedelia chinensis with a concentration of 300 g / L. The prepared wedelia extract solution is directly sprayed on the crops damaged by the larvae of the slug moth, which is suitable for the young larvae of the slug moth. Spraying the extract of Wedelia chinensis is not optional in rainy weather to prevent the extract from being washed away by rain. Spray once a week, and after about three times, the young larvae of the killing moth can be killed. If the larvae are large, continue spraying for 2-3 times to achieve the effect of killing the larvae of the moth moth. Through experimental verification, in the present embodiment, the mortality rate of the larvae of the slug moth is about 94%.

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Abstract

The invention relates to an extracting solution for killing spilarctia subcarnea larvae, and a preparation method and application thereof. The preparation method comprises the following steps: collecting leaves of sphagneticola trilobata; drying in the sun and crashing; taking 100g-300g dry leaves, soaking in 1L running water for 48-72 hours, frequently stirring during soaking, and then filtering with gauze, thereby acquiring the sphagneticola trilobata extracting solution in the concentration of 100-300g / L. The prepared sphagneticola trilobata extracting solution is directly sprayed on crops damaged by spilarctia subcarnea larvae and is fit for killing spilarctia subcarnea larvae at lower age; the sphagneticola trilobata extracting solution cannot be sprayed on overcast and rainy days, for preventing the extracting solution from being washed away by rainwater; the sphagneticola trilobata extracting solution can be sprayed one time per week, and the young spilarctia subcarnea larvae can be killed after the sphagneticola trilobata extracting solution is sprayed for three times; if the larvae are larger, the sphagneticola trilobata extracting solution can be sprayed for another 2-3 times so as to achieve the effect of killing the spilarctia subcarnea larvae; an experiment proves that the death rate of the spilarctia subcarnea larvae is about 58%-94%.

Description

technical field [0001] The invention belongs to the environment-friendly technical field of using plant resources to kill insects, and in particular relates to an extract solution for killing the larvae of the weed moth, which is invasive from outside, and its preparation method and application. Background technique [0002] The moth is an agricultural and horticultural pest widely distributed in my country. Its larvae eat a variety of crops and garden flowers, and eat plant leaves, flowers, and fruits. They often bite the plant leaves into holes or notches, and excrete feces. pollute. It can reproduce 2 to 6 generations a year, intermittently damages crops and garden flowers, and causes huge economic losses to my country's agriculture and forestry. At present, the main method of preventing and controlling the moth moth in my country is to use chemical insecticides. However, the use of insecticides will not only cause pesticide residues on plants, endanger the health of huma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01P7/04
CPCA01N65/00A01N65/12
Inventor 刘彪李江王现丽胡红伟方冰郭一飞张乐观罗领先朱伟萍吴俊峰
Owner HENAN UNIV OF URBAN CONSTR