CN1539292A

CN1539292A - Botanical insecticide its preparation method

Info

Publication number: CN1539292A
Application number: CNA031132820A
Authority: CN
Inventors: 李廷伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-22
Filing date: 2003-04-22
Publication date: 2004-10-27
Anticipated expiration: 2023-04-22
Also published as: CN1247096C

Abstract

A vegetative insecticide is prepared from 8 Chinese-medicinal herbs including leftover of tobacco, Sichuan chinaberry, wild chrysanthemum flower, etc through carefully choosing raw materials, drying in air, pulverizing, immersing filter, steaming and concentrating. Its advantages are high effect, no environmental pollution, and improving soil.

Description

Vegetable insecticide and preparation method thereof

Technical field

The present invention relates to insecticide and preparation method, be specifically related to vegetative insecticide and preparation method thereof.

Background technology

At present, the insecticide of domestic use mostly is chemical insecticide, uses chemical insecticide not only to pollute to environment, and long-term use also can bring infringement to the mankind in the residual animal and plant body, and animals and plants also easily form drug resistance simultaneously; In addition, though vegetable insecticide research and report are arranged, the little poison of ubiquity, little residual and effect wait characteristics slowly.

Summary of the invention

The objective of the invention is to: a kind of efficient, wide spectrum, inferior low toxicity, noresidue vegetable insecticide and preparation method thereof are provided, and this insecticide raw material is taken from natural plants fully, and production process is a physical change process, does not have pollutants such as waste water, waste residue to produce.

Technical solution of the present invention is: this insecticide mainly is made of the extract of following Chinese herbal medicine protophyte, press the raw material total weight: tobacco leftovers 50-75%, wherein tobacco leaf 64%, the column of smoke 18%, cigarette root 13%, fireworks 5%, fructus crotonis oil 2-5%, melia toosendan 2-5%, mother chrysanthemum 2-5%, capsicum annum fasciculatum 2-5%, Alocasia ordora 5-10%, ginkgo skin 5-10%, fish Teng 5-10%.

The main process of its preparation is: through raw material selected, dry, pulverizing, immersion, filtration, boiling, processing such as concentrate, extract the effective ingredient of each protophyte respectively, be mixed according to a certain percentage again and make vegetable insecticide.

The present invention adopts the extract of multiple protophyte as the insecticidal activity thing, the desinsection wide spectrum, be widely used in vegetables, tealeaves, fruit tree, cotton, cereal crops improvement insect pest, have more by force tag, trapping, poisoning, food refusal, interior food effect, this insecticide is aqua, and is safe and convenient to use, and toxic ingredient is natural degradation very easily, to the crops noresidue, to soil, environmental nonpollution.

Embodiment

During preparation, at first tackle Chinese herbal medicine and carry out selectedly, every kind of raw material should be pure dry product all, avoids going mouldy, damages by worms, variable color, spoiled, rotten and so on fake and poor products, promptly chooses raw material routinely.

Wherein the preparation process of the concentrated venom of tobacco is: the piece, bar, sheet or other shape that are ground into 1-6mm after material dry or alternate manner dehydration are dried, raw material after the pulverizing soaked 20-48 hour in the water more than 20 ℃ in temperature, the weight ratio of raw material and water is 1: 4, use centrifuge dewatering then, the filter press squeeze and filter goes out the effective ingredient of 2800-3000 purpose proportion 0.02-0.04, again filtrate is concentrated refining 3-4 hour in reactor, temperature 90-110 ℃, promptly obtain the concentrated mother liquor that proportion is 0.04-0.11.

Wherein melia toosendan, mother chrysanthemum, capsicum annum fasciculatum, Alocasia ordora, ginkgo skin, fish Teng dry respectively, pulverize respectively after drying, soaked 5-10 hour in the water more than 20 ℃ in temperature respectively after the pulverizing, the weight ratio of raw material and water is 1: 1, goes out to each have effective constituent with centrifuge dewatering filter press squeeze and filter then; Fructus crotonis oil oil expression in addition.

Behind the concentrated mother liquor that obtains each protophyte, be not less than under 50 ℃ of situations in temperature and mix, stirring promptly obtains vegetable insecticide.

For example: this insecticide is used for vegetables and controls worm, and 1 mu of ground needs medicine 500g, converts water dilution spraying at 1: 700 during use, controls the worm rate and reaches 85-98%, and wherein budworm 100%, two spotted spider mite 100%, cabbage caterpillar 96%, diamond-back moth 85%.

Be used for paddy rice and control worm, 1 mu of ground needs medicine 750g, converts water dilution spraying at 1: 500 during use, controls the worm rate and reaches 85%, wherein rice borer 85%, rewinding leaf worm 100%.

Be used for cotton and control worm, 1 mu of ground needs medicine 750g, converts water dilution spraying at 1: 500 during use, controls the worm rate and reaches 95%, and wherein cotton bollworm 98%.

Be used for tealeaves and control worm, 1 mu of ground needs medicine 500g, converts water dilution spraying at 1: 700 during use, controls the worm rate and reaches 98%, and wherein tea caterpillar 100%.

The fruit tree flowers are controlled worm, and 1 mu of ground needs medicine 500g, and during use 1: 500g converts water dilution spraying, controls the worm rate and reaches 95%.

The present invention has the following advantages: 1, comprehensive killing rate height.2, medication isolation period, is long, reaches about 15 days, reduces farming originally.3, there are not the three wastes in the production process, can desinsection when thing slag as fertilizer sources uses, especially Leek vegetable plot maggot is controlled the worm rate and reach 95%, can alleviate soil compaction again and play pine and turn usefulness into.4, to the crops noresidue.

Claims

1, a vegetative insecticide, it is characterized in that: this insecticide mainly is made of the extract of following Chinese herbal medicine protophyte, presses the raw material total weight: tobacco leftovers 50-75%, fructus crotonis oil 2-5%, melia toosendan 2-5%, mother chrysanthemum 2-5%, capsicum annum fasciculatum 2-5%, Alocasia ordora 5-10%, ginkgo skin 5-10%, fish Teng 5-10%.

2, a vegetative insecticide according to claim 1 is characterized in that: wherein tobacco leaf 64%, cigarette footpath 18%, cigarette root 13%, fireworks 5%.

3, the preparation method of vegetable insecticide, it is characterized in that: the main process of preparation is: through raw material selected, dry, pulverizing, immersion, filtration, boiling, processing such as concentrate, extract the effective ingredient of each protophyte respectively, each effective ingredient is mixed according to a certain percentage makes vegetable insecticide again.

4, a vegetative insecticide according to claim 3, it is characterized in that: wherein the preparation process of tobacco concentrated mother liquor is: the piece that is ground into 1-6mm after material dry or alternate manner dehydration are dried, bar, sheet or other shape, raw material after the pulverizing soaked 20-48 hour in the water more than 20 ℃ in temperature, the weight ratio of raw material and water is 1: 4, use centrifuge dewatering then, the filter press squeeze and filter goes out the effective ingredient of 2800-3000 purpose proportion 0.02-0.04, again filtrate is concentrated refining 3-4 hour in reactor, temperature 90-110 ℃, promptly obtain the concentrated mother liquor that proportion is 0.04-0.11.

5, a vegetative insecticide according to claim 3, it is characterized in that: wherein melia toosendan, mother chrysanthemum, capsicum annum fasciculatum, Alocasia ordora, ginkgo skin, fish Teng dry respectively, pulverize respectively after drying, soaked 5-10 hour in the water more than 20 ℃ in temperature respectively after the pulverizing, the weight ratio of raw material and water is 1: 1, goes out to each have effective constituent with centrifuge dewatering filter press squeeze and filter then.

6, a vegetative insecticide according to claim 3 is characterized in that: the oil expression of fructus crotonis oil.