CN104304285B - Compound insecticidal water emulsion agent for preventing and treating contariniapyrivora - Google Patents
Compound insecticidal water emulsion agent for preventing and treating contariniapyrivora Download PDFInfo
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- CN104304285B CN104304285B CN201410584209.7A CN201410584209A CN104304285B CN 104304285 B CN104304285 B CN 104304285B CN 201410584209 A CN201410584209 A CN 201410584209A CN 104304285 B CN104304285 B CN 104304285B
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Abstract
The invention relates to a compound insecticidal water emulsion agent for preventing and treating contariniapyrivora. Effective components in the compound insecticidal water emulsion agent are chitosan oligosaccharide and azadirachtin. The compound insecticidal water emulsion agent has a good prevention effect on contariniapyrivora; with the synergism effect of chitosan oligosaccharide with a plant growth promotion function and azadirachtin with insecticidal activity, the prevention on contariniapyrivora is effectively increased, the obvious prevention effect can be realized in the early stage or the later stage of morbidity, and the optimal dosage period is long.
Description
Technical field
The present invention relates to a kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia, and in particular to a kind of oligochitosan for preventing and treating pears cecidomyiia and azadirachtin complex aqueous emulsion, belongs to field of biological pesticide.
Background technology
Pear tree is all occupied first place in the world in the cultivated area of China and yield, according to FAO (Food and Agriculture Organization of the United Nation)（FAO）Statistics, Chinese pear tree receives area for 125.8 ten thousand per hectares within 2009, accounts for the 72.3% of world's pears gross area；Gross annual output amount is 1438.8 ten thousand tons, accounts for the 65.7% of Gross World Product.It is pear tree minor pests before pears cecidomyiia, cause harm relatively light, but in recent years all occur seriously in China's main pears producing region, it has also become the primary pest of pears, easily cause pear tree early leaf fall to significantly affect yield and quality.At present preventing and treating pears cecidomyiia is mainly killed based on the chemical insecticides such as chrysanthemum ester, imidacloprid to spray, but chemical prevention is also easy to produce Drug resistance, and cannot apply in Organic pear orchard.
Oligochitosan is Chitosan oligosaccharide, also referred to as chitin oligosaccharide, scientific name β-Isosorbide-5-Nitrae-oligosaccharide-glucamine, is through a kind of special product obtained from biological enzyme technology process by shitosan, is a kind of good water solubility, function is big, the high low molecular weight product of biological activity.Oligochitosan passes through absorption in bacterial cell surface, forms a floor height molecular film, thus playing bacteriostasis and sterilization effect；Another kind of mechanism is oligochitosan by penetrating in bacterial cell body, so that the Cytoplasm with anion in cell body is flocculated, the upset normal physiological activity of cell, thus kill antibacterial.In general, molecular weight is bigger, and the outer membrane being formed is finer and close, nutrient substance more can be stoped to enter bacterial cell, thus antibacterial action effect is obvious；Molecular weight is less, is more easily accessible in the gap structure of cell wall, thus the metabolism of interference cell, bactericidal action is obvious.Oligochitosan itself contains abundant carbon and nitrogen, can be decomposed by the microorganisms using and the nutrient as plant growing, oligochitosan can promote beneficial microorganism to grow and suppress some phytopathogens.Oligochitosan also can stimulate plant growing and the disease resistance of induction plant, has a certain degree of direct repression to various plants pathogen.
Nimbin is the botanical pesticide extracting from Azadirachta Indica A. tree, and its sterling is white amorphous substance, is soluble in methanol, ethanol, acetone, dimethyl sulfoxide polar organic solvent.Nimbin is outstanding biological pesticide recognized in the world, one of Typical Representative for botanical pesticide, to insecticide children's refusing to eat, interference spawning, interference insect variation, make it cannot change in quality for adult, repellent larva and the effect suppressing its growth and reach parasite killing purpose, be widely used in preventing and treating vegetable, the various pests on the crops such as fruit tree, be a kind of efficiently, low-residual and high selectivity and be not likely to produce drug-fast harmless boilogical pesticide.To people, animal, birds and Apiss safety, predatism and parasite are disturbed less, no substantially poisoning, degradable in the environment.China's South Guangdong, Hainan, Yunnan and Sichuan some areas establishing in large scale Azadirachta Indica A. tree.
Content of the invention
In prior art, the usage amount of pesticide is increasing, not only makes crop produce resistance, also brings serious pollution to environment, for the problems referred to above, the invention provides a kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia.
Technical scheme is as follows：
A kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia, effective ingredient is oligochitosan and nimbin.In the present invention, effective ingredient is counted by weight：Oligochitosan 0.1-5 part, nimbin 0.1-5 part；Preferably, oligochitosan 1-3.5 part, nimbin 1.5-3.5 part；It is furthermore preferred that oligochitosan 2-3 part, nimbin 2-3 part；Most preferably, 2.5 parts of oligochitosan, 3 parts of nimbin.
Further, compounding aqueous emulsion of the present invention, emulsifying agent is triphenoethyl benzene phenol polyethenoxy ether phosphate, solvent is toluene, and stabilizer is epoxychloropropane, and antifreezing agent is ethylene glycol, thickening agent is xanthan gum, the compositionss that preservative is mixed with arbitrary proportion with sodium benzoate for benzoic acid.Preferably, benzoic acid and the mass ratio of sodium benzoate are 2:1.
The extension rate during dispenser of compounding aqueous emulsion of the present invention is 500-5000 times；Preferably, extension rate during dispenser is 2000 times.
The present invention has extraordinary prevention effect to pears cecidomyiia, the present invention is using the effect promoting to have collaborative addition between Effects on Plant Growth and the insecticidal activity of nimbin of oligochitosan, effectively enhance the preventing and treating to pears cecidomyiia, morbidity early stage or morbidity later stage all can reach significantly prevention effect, and medication optimum period is long.
Specific embodiment
To further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with description and apparent.But embodiment is only exemplary, any restriction is not constituted to the scope of the present invention.It will be understood by those skilled in the art that to modify to the details of technical solution of the present invention and form or can replace lower without departing from the spirit and scope of the present invention, but these modifications and replacement each fall within protection scope of the present invention.
A kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia of embodiment 1
Each raw materials by weight portion meter：
2.5 parts of oligochitosan, 3 parts of nimbin, triphenoethyl benzene phenol polyethenoxy ether phosphoesterase 30 .5 part, 0.3 part of epoxychloropropane, 1 part of ethylene glycol, the compositionss of 1.5 parts of xanthan gum, benzoic acid and sodium benzoate（Benzoic acid is 2 with the mass ratio of sodium benzoate:1）1 part, 90 parts of toluene.
By above-mentioned raw materials, routinely preparation technology is prepared into agricultural insecticidal aqueous emulsion, during dispenser, the present invention is diluted to 2000 times.
A kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia of embodiment 2
Each raw materials by weight portion meter：
0.5 part of oligochitosan, 4 parts of nimbin, triphenoethyl benzene phenol polyethenoxy ether phosphoesterase 30 .6 part, 0.5 part of epoxychloropropane, 1 part of ethylene glycol, the compositionss of 1.3 parts of xanthan gum, benzoic acid and sodium benzoate（Benzoic acid is 1 with the mass ratio of sodium benzoate:1）1 part, 90 parts of toluene.
By above-mentioned raw materials, routinely preparation technology is prepared into agricultural insecticidal aqueous emulsion, during dispenser, the present invention is diluted to 2000 times.
A kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia of embodiment 3
Each raw materials by weight portion meter：
4.5 parts of oligochitosan, 1 part of nimbin, triphenoethyl benzene phenol polyethenoxy ether phosphoesterase 30 .4 part, 0.5 part of epoxychloropropane, 1.5 parts of ethylene glycol, 1 part of xanthan gum, 1.5 parts of benzoic acid, 90 parts of toluene.
By above-mentioned raw materials, routinely preparation technology is prepared into agricultural insecticidal aqueous emulsion, during dispenser, the present invention is diluted to 2000 times.
The field efficacy evaluation test to pears cecidomyiia for test example 1 present invention
Field efficacy evaluation test is carried out in Laiyang Shandong Province theatre, and reagent agent is nimbin, embodiment 1, embodiment 2,3 dose out powders of embodiment, all by 15,45,90mg/L drug concentration sprayed；With 0.5% nimbin emulsion（Commercially available, spraying medicine concentration be 15,45,90mg/L）With 10% imidacloprid wettable powder（Commercially available, spraying medicine concentration is 67mg/L）For comparison medicament, and set clear water comparison（CK）.
Randomized block design, every cell processes 3 plants of pear trees, often processes and is repeated 3 times.Spraying time is that in May, 2013 larva endangers the initial stage.Before spray, often tree presses the random listing mark extending shoot in 5 orientation of East, West, South, North 1, investigates insect population；First be watered spraying again with after a small amount of water dissolution reagent agent, reverse side uniformly medicine, till dripping.After spray, investigation in 1,7,14 days borer population alive, calculates Revision insect recluced rate and preventive effect, and computing formula is as follows：
Revision insect recluced rate（%）=（Borer population after borer population-spray before spray）Borer population × 100 before/spray；
Preventive effect（%）=（Process Revision insect recluced rate-comparison Revision insect recluced rate）/（100- compares Revision insect recluced rate）×100.
The present invention is as shown in table 1 to the field control effect of pears cecidomyiia：
As shown in Table 1, the preventive effect that 3 compound insecticidal aqueous emulsions of the present invention spray latter 1 day is 70.89%-82.31%, preferably embodiment 2 compound insecticidal aqueous emulsion, and the proportioning that reason is probably nimbin and oligochitosan in the present embodiment is optimum proportioning；The latter 7 days preventive effects that spray are 87.21%-91.23%, and highest preventive effect is also the joined disinsection aqueous emulsion of embodiment 2；Spray latter 14 days, preventive effect is that the prevention effect to pears cecidomyiia of 90.89%-94.32%. compounded pesticides of the present invention is above nimbin emulsion and 10% imidacloprid wettable powder of comparison medicament 0.5%.The 7th day after administration, the preventive effect of compound insecticidal aqueous emulsion of the present invention was above 87%, and the 14th day, and preventive effect is above 90%, and therefore, the present invention is to pears cecidomyiia instant effect, and the lasting period is long.
The field control effect to pears cecidomyiia for table 1 compound insecticidal aqueous emulsion of the present invention
Claims (1)
1. a kind of compound insecticidal aqueous emulsion for preventing and treating pears cecidomyiia is it is characterised in that described
Each raw materials by weight portion meter in compound insecticidal aqueous emulsion：
0.5 part of oligochitosan, 4 parts of nimbin, triphenoethyl benzene phenol polyethenoxy ether phosphate
0.6 part, 0.5 part of epoxychloropropane, 1 part of ethylene glycol, 1.3 parts of xanthan gum, benzoic acid with
1 part of the compositionss of sodium benzoate, 90 parts of toluene, wherein, the matter of benzoic acid and sodium benzoate
Amount ratio is 1:1；By above-mentioned raw materials, routinely preparation technology is prepared into agricultural insecticidal aqueous emulsion.
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Family Cites Families (3)
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| EP2424373B1 (en) * | 2009-04-28 | 2016-11-02 | Bayer Intellectual Property GmbH | Compositions comprising a strigolactone compound and a chito-oligosaccharide compound for enhanced plant growth and yield |
| CN103004855A (en) * | 2012-11-26 | 2013-04-03 | 海南正业中农高科股份有限公司 | Composition containing oligosaccharide and anabasine insecticide components |
| CN103141488B (en) * | 2013-01-25 | 2014-07-02 | 浙江农林大学 | Pesticide compounded by azadirachtin and cnidium lactone and preparation method thereof |
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Inventor after: Wang Xu Inventor before: Wang Hongtao Inventor before: Duan Xuewen Inventor before: Qu Lijun Inventor before: Quan Weiyu Inventor before: Zhu Liping |
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Effective date of registration: 20161009 Address after: 266000 Shandong province Qingdao City, Shandong Road No. 109 Building No. 3 3102 Taiwan Jing Applicant after: QINGDAO JINZHI HIGH AND NEW TECHNOLOGY CO., LTD. Address before: 250062, No. ten, No. 16369, Lixia District, Ji'nan City, Shandong Province Applicant before: SHANDONG ZHONGDA PHARMACEUTICAL CO., LTD. |
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