CN1079009C - Preparation of margosine as plant insecticide and its using method - Google Patents

Abstract

The present invention relates to a novel insecticide, which is a pure natural plant insecticide prepared from margosine, lightyellow sophora root, tobacco leaf, argy wormwood leaf and gleditsiae through extraction processing. The present invention has the characteristics of no toxicity, high efficiency, lasting effect, broad spectrum, little resistance of pests, no pollution on the environment, etc. The present invention can be widely used for preventing and controlling insect pests in field crops, horticulture, fruit trees, etc. due to better effect of preventing plant diseases and insect pests.

Description

Margosine vegetable insecticide and make usage

The invention belongs to the preparation and the using method of insecticide.Relating to a kind of is raw material with the plant after extracting, and mixes and the preparation of efficient, nontoxic, the broad-spectrum plant insecticide made and make usage.

Various countries use the chemical pesticide control insect pest merely in the world now, have brought serious adverse.Be environmental pollution, destroyed the ecological balance, people and animals' pesticide poisoning, death happens occasionally, and the pesticide resistance of its remaining toxicity and insect is all day by day serious.At present, though low-toxin farm chemicals such as existing chrysanthemum ester class come out, cost an arm and a leg, and the long-range harm of residual hazard also is very serious that this have potentiality to the mankind, infiltrative harm is anxious to be solved.

Purpose of the present invention is developed a kind of novel, efficient, nontoxic vegetable insecticide, replaces poisonous chemical pesticide.

The active ingredient of insecticide of the present invention is made up of the extract of several plants such as China tree, kuh-seng (Sophora alopecuroide), tobacco leaf, tarragon, Chinese honey locust.The weight ratio of raw material is: China tree, kuh-seng (Sophora alopecuroide), tobacco leaf, tarragon, Chinese honey locust==3: 3: 2: 1: 1.Emulsifier accounts for 3-5%, and turpentine oil accounts for 5-10%, and bleeding agent accounts for 3-5%, and auxiliary agent accounts for 5-10%, and aromatic accounts for 2%.Extraction of effective components is with decocting method the medicinal material monomer to be prepared into extract (to press Chinese Pharmacopoeia, the preparation method of extract manufactures, preparation synthesis technique flow process accompanying drawing-1), remove impurity, resin, albumen of extract etc. again with alcohol deposition method, reclaim ethanol, add thinner or continue concentrated reaching, per 1 gram soup is equivalent to 4 grams of crude drug, above-mentioned each active ingredient is required fully to mix in proportion make insecticide.

The thinner of insecticide is a clear water.Use spray-on process when being used for plant insecticide, be used for beast parasite and mange on one's body and adopt dipping, the control soil insect then adopts spray to plant, soak seed.The extension rate that this insecticide is used for desinsection is 600-1000 times, is used for spray and plants 50 times, soaks seed 200 times, and the extension rate of medicament is 1000-1200 times when being used to prevent.

This medicament is through toxicology neasuring: small white mouse oral administration LD50 is 15000 milligrams/kilogram, and Amls tests positive.Chronic toxicity test shows does not have carcinogenic, teratogenesis, cause phenomenons such as change, so nontoxic to people and animals.

After this medicament uses, through in chemical pesticides such as 40% Rogor, chlorophos contrast result of use, find that its efficacy stability, wide spectrum, effect are remarkable.

Embodiment 1:

China tree: 300 grams

Kuh-seng: (Sophora alopecuroide): 300 grams

Tobacco leaf: 200 grams

Tarragon: 100 grams

Chinese honey locust: 100 grams

Emulsifier: 50 grams

Turpentine oil: 100 grams

Bleeding agent: 50 grams

Auxiliary agent: 100 grams

Make insecticide stoste by aforementioned synthesis technique.

Embodiment 2:

The insecticide stoste of getting embodiment 1 is diluted to 500,1000,1,500 three multiples, carries out the radish aphid field control effectiveness test on rape ground, and other establishes, and contrast (not spraying medicine) was handled back 16 hours and the 3rd day (40 hours) only count aphid quantity.To radish aphid field control effectiveness test result on June 6th, 1994

Handle	Each point aphid amount and total aphid amount (head) before handling	Handled back 16 hours		Handled back 40 hours
						The total aphid amount of accumulative total (head)	The aphid rate (%) that goes down	Accumulative total aphid amount	The insect population rate (%) that goes down
		1500 times of spraying contrasts of 1000 times of sprayings of 500 times of sprayings	96、56、115、123、 109、46、57、100、 801 49、37、127、131、 96、39、123、41、 743 65、79、75、37、 103、43、145、120、 23、50、115、98、 60、109、505	112 126 167 75、66 80、100 130、528	260 250 750 increase					48 74 126 570	90.4 90.0 81.0 increase by 12

Handle investigation in back 16 hours, aphid is extracted lancet more, lose the ability that causes harm, very easily fall, contrast then continues to cause harm, and the aphid amount increases to some extent, test shows, 500,1000,1500 times of sprayings of margosine vegetable insecticide are after 16 hours, and insect population goes down rate all more than 75%, and the investigation insect population rate of going down reached more than 80% in 40 hours.

Embodiment 3:

Get example 1 soup and be diluted to 500 times, get city's pin crystal chlorophos (Fushun Chemical Plant's product) and be diluted to 500 times.Soaked spray silkworm polypide in 5 age 10 seconds with margosine insecticide and chlorophos respectively, to estimate the general character of tagging to lepidopterous insects.

Handle	Borer population	1 hour	12 hours	Dead %
					500 times of margosine insecticides soaked 10 seconds	60	The spasm of all stopping action	All dead	100
500 times of chlorophos soaked 10 seconds	60	Stop action for dead 15	54 death	90
					CK (clear water)	22	Normally	Normally	0

Embodiment 4:

Get example 1 and kill 500,1,000 two multiples of agent soup dilution and 40% dimethoate emulsifiable concentrate and the contrast of black peach aphid drug effect that are diluted to 500 times.Stay and do not spray medicine contrast, about 40 square metres of every processing.Do not establish repetition, workers and peasants 16 type sprayer Chang Rongliang spraying, 5 strains are decided in every processing at random before the dispenser, fixed 1 of every strain, tokens statistics aphid amount, 48 hours statistics index blade aphid amounts are represented preventive effect with the insect population rate of going down after the dispenser.

To result of the test on June 6th, 1994 of black peach aphid

Handle	Each point aphid amount and total aphid amount before the dispenser	After the dispenser 48 hours
				The aphid that lives is measured	The aphid % that goes down
		500 times of margosines	50，15，17，39，46，167			0	100
1000 times of margosines	30、49、10、60、45、194			0	100
		500 times in 40% Rogor	50、31、32、40、29、182			3	98.4
Do not spray medicine	4、40、52、25、181			207	Increase by 144%

Test shows: 500 times, 1000 times in margosine insecticide was through 48 hours, and the aphid rate of going down reaches 100%, and 500 times of preventive effects of Rogor of recommending for the locality are suitable.

Example 5:

Get embodiment 1 made insecticide stoste and be diluted to 600 times, carry out dipping for 1000 sheep, the sheep with the back tracing observation, after bathing does not have external generations worm and mange takes place, and testing the discovery margosine not only can desinsection, but can suppress the good medicine that fungi is livestock dip.

Show the margosine vegetable insecticide is strictly insecticide efficient, nontoxic, wide spectrum through test in many ways.Vast territory and abundant resources in China, and Chinese herbal medicine resource is very abundant, replaces chemical pesticide with plant pesticide, has protected nature, has protected the mankind.

Claims (2)

1. margosine vegetable insecticide is characterized in that this vegetable insecticide is by China tree, kuh-seng or Sophora alopecuroide, tobacco leaf, tarragon, Chinese honey locust=3: 3: 2: 1: 1, decoct through the decocting method monomer, decoction liquor concentrates, decontamination, alcohol deposition method, reclaim ethanol, add thinner or continue to be condensed into 4 grams that every gram soup is equivalent to crude drug, adding emulsifier 3-5%, turpentine oil 5-10%, bleeding agent 3-5%, auxiliary agent 5-10%, aromatic 2% mixes and forms;

2. margosine vegetable insecticide according to claim 1 make usage, it is characterized in that: when being used for desinsection, the extension rate 600-1000 of medicament is doubly; When being used to prevent, the extension rate 1000-1200 of medicament doubly; Be used for spraying when planting 50 times of the extension rates of medicament; When being used to soak seed, 200 times of the extension rates of medicament; When being used for livestock dip, 600 times of the extension rates of medicament.

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