CN104430395B - A kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth - Google Patents
A kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth Download PDFInfo
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- CN104430395B CN104430395B CN201410595059.XA CN201410595059A CN104430395B CN 104430395 B CN104430395 B CN 104430395B CN 201410595059 A CN201410595059 A CN 201410595059A CN 104430395 B CN104430395 B CN 104430395B
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- diamondback moth
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Abstract
The present invention relates to a kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth, effective ingredient is oligochitosan and nimbin.The present invention has extraordinary prevention effect to Caulis et Folium Brassicae capitatae diamondback moth, the present invention utilizes 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 Caulis et Folium Brassicae capitatae diamondback moth, morbidity early stage or morbidity later stage all can reach prevention effect significantly, and medication optimum period is long.
Description
Technical field
The present invention relates to a kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth, be specifically related to a kind of oligochitosan for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth and azadirachtin complex cream, belong to field of biological pesticide.
Background technology
There is 4-6 generation in Caulis et Folium Brassicae capitatae diamondback moth North China, survives the winter every year with pupa, next May in spring sprout wings, ovum dissipate produce or several originate in recess between blade back arteries and veins.Larva totally 4 age, newly hatched larvae slips into mesophyll and takes food, and 2 ages took food lower epidermis and mesophyll, forms transparent speckle, in blank on blade；Dish leaf can be eaten into hole and incise by 3-4 instar larvae, and time serious, full leaf is eaten and reticulated, and only stays vein.Larva enlivens, and chance agitation i.e. twists, falls back or rolls and falls；Mature larva is tied thin cocoon near vein and is pupated.The 5-6 month and August are 2 peak of occurrence, with weight of causing harm spring；There are the 3-6 month and 2 peak periods of the 8-11 month in the Yangtze river basin and South China, cause harm autumn and overweight spring.
Oligochitosan i.e. Chitosan oligosaccharide, also referred to as chitin oligosaccharide, formal name used at school β-Isosorbide-5-Nitrae-oligosaccharide-glucamine, is a kind of product being processed through special biological enzyme technology by chitosan and obtaining, and is a kind of good water solubility, and function is big, the low molecular weight product that biological activity is high.Oligochitosan at bacterial cell surface by absorption, is formed a floor height molecular film, thus plays bacteriostasis and sterilization effect；Another kind of mechanism be oligochitosan by penetrating in bacterial cell body, make in cyton the Cytoplasm with anion flocculate, the upset normal physiological activity of cell, thus kill antibacterial.In general, molecular weight is the biggest, and the outer membrane formed is the finest and close, nutrient substance more can be stoped to enter bacterial cell, thus antibacterial action effect is obvious；Molecular weight is the least, is more easily accessible in the gap structure of cell wall, thus the metabolism of interference cell, bactericidal action is obvious.Oligochitosan itself, containing abundant carbon and nitrogen, can be decomposed by the microorganisms utilization the nutrient as plant growing, and oligochitosan can promote that beneficial microorganism growth suppresses some phytopathogens.Oligochitosan also can stimulate plant growing and the disease resistance of induction plant, and various plants pathogen is had a certain degree of direct repression.
Nimbin is the botanical pesticide extracted 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 is laid eggs, interference insect makes a variation, make it to change in quality and reach parasite killing purpose for adult, repellent larva and the effect suppressing it to grow, be widely used in preventing and treating the various pests on the crops such as vegetable, 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 Apis safety, predatism and parasite are disturbed less, without obvious poisoning, the most degradable.China's South Guangdong, Hainan, Yunnan and some areas, Sichuan establishing in large scale Azadirachta Indica A. tree.
Summary 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 compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth.
Technical scheme is as follows:
A kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth, effective ingredient is oligochitosan and nimbin.In the present invention, effective ingredient is counted by weight: oligochitosan 1-5 part, nimbin 1-5 part；Preferably, oligochitosan 1.5-3 part, nimbin 1.5-3.5 part；It is furthermore preferred that oligochitosan 2-3 part, nimbin 2-3 part；Most preferably, oligochitosan 2.5 parts, nimbin 2.5 parts.
Further, compounded cream of the present invention, emulsifying agent is selected from calcium dodecyl benzene sulfonate (agriculture breast 500#), Nongru-700 #, agriculture breast 2201#, agriculture breast 1601#, agriculture breast 600#, agriculture breast 400#, the general entitled OPEO of emulsifying agent T-60, TX-10()；Solvent is selected from dimethylbenzene, solvent naphtha (S-150, S-180, S-200), toluene, biodiesel, methylated vegetable oil；Cosolvent is selected from methanol, dimethylformamide, Ketohexamethylene, acetone；Stabilizer is selected from triphenyl phosphite, epoxychloropropane, acetic anhydride.
The present invention has extraordinary prevention effect to Caulis et Folium Brassicae capitatae diamondback moth, the present invention utilizes 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 Caulis et Folium Brassicae capitatae diamondback moth, morbidity early stage or morbidity later stage all can reach prevention effect significantly, and medication optimum period is long.
Detailed description of the invention
Below in conjunction with specific embodiment further describe the present invention, advantages of the present invention and feature will be with describe and apparent.But embodiment is only exemplary, the scope of the present invention is not constituted any restriction.It will be understood by those skilled in the art that and the details of technical solution of the present invention and form can be modified or replace lower without departing from the spirit and scope of the present invention, but these amendments and replacement each fall within protection scope of the present invention.
Embodiment 1 one kinds is for preventing and treating the compounded cream of Caulis et Folium Brassicae capitatae diamondback moth
Each raw materials by weight portion meter:
Oligochitosan 2.5 parts, nimbin 2.5 parts, calcium dodecyl benzene sulfonate 0.5 part, dimethylformamide 0.3 part, triphenyl phosphite 1 part, dimethylbenzene 100 parts.
Above-mentioned raw materials preparation technology routinely is prepared as agricultural insecticidal cream.
Embodiment 2 one kinds is for preventing and treating the compounded cream of Caulis et Folium Brassicae capitatae diamondback moth
Each raw materials by weight portion meter:
Oligochitosan 1.5 parts, nimbin 4 parts, calcium dodecyl benzene sulfonate 0.6 part, dimethylformamide 0.5 part, triphenyl phosphite 1 part, dimethylbenzene 100 parts.
Above-mentioned raw materials preparation technology routinely is prepared as agricultural insecticidal cream.
Embodiment 3 one kinds is for preventing and treating the compound insecticidal aqueous emulsion of pears cecidomyiia
Each raw materials by weight portion meter:
Oligochitosan 3 parts, nimbin 1 part, calcium dodecyl benzene sulfonate 0.3 part, dimethylformamide 0.3 part, triphenyl phosphite 1.5 parts, dimethylbenzene 100 parts.
Above-mentioned raw materials preparation technology routinely is prepared as agricultural insecticidal cream.
Test example 1 Toxicity Determination of the present invention
The embodiment of the present invention is the method using Toxicity Determination and field test to combine.First pass through Toxicity Determination, the co-toxicity coefficient (CTC) after clear and definite two kinds of medicaments are compounding by a certain percentage, CTC ＜ 80 is antagonism, CTC ＞ 120 is potentiation, 80≤CTC≤120 are summation action, on this basis, then carry out field test.
Test method: respectively the mother solution of each mixed agent is diluted to during test five series concentration, is respectively placed in beaker standby.Use the method that the tightest leaf is followed by worm, take out after blade of the same size not in contact with any medicament is soaked 5s in the medicinal liquid configured, naturally dry, put in insect box, then connect for examination larva, raise under the conditions of 25 DEG C, often process 3 times and repeat, often repeating examination borer population used is 50, sets blank simultaneously, checks dead borer population in 72h, calculate mortality rate and corrected mortality, try to achieve virulence regression equation and calculate LC50Value.If comparison mortality rate is more than 10%, then it is considered as invalid test.Computing formula is as follows:
Insect corrected mortality is converted into probit value (y), and concentration for the treatment of (μ g/mL) is converted into logarithm value (x), draws virulence regression equation with method of least square, and thus calculate the value of every kind of medicament.Co-toxicity coefficient CTC is calculated according to the abundant equation of Sun Yun.Computing formula is following (with nimbin as standard agent, its toxicity index is 100):
TI × the P of theoretical toxicity index (the TTI)=nimbin of MNimbinTI × the P of+effective active composition BEffective active composition B
In formula: M is the mixture of different ratio；
PEffective active composition BFor the ratio that effective active composition B is shared in the composition；
PNimbinFor the ratio that nimbin is shared in the composition；
B is oligochitosan.
For examination insect: Caulis et Folium Brassicae capitatae diamondback moth；Test medicine is commercially available.
EXPERIMENTAL DESIGN: determine effective lethasl concentration scope of the former medicine of nimbin, oligochitosan and the two different ratio mixture through pilot study.
Toxicity test result of the present invention is as shown in table 1:
Table 1 nimbin and the oligochitosan different ratio toxicity test to lopper worm
Claims (1)
1. the compounded cream being used for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth, it is characterised in that described multiple
Join each raw materials by weight portion meter in cream:
Oligochitosan 2.5 parts, nimbin 2.5 parts, calcium dodecyl benzene sulfonate 0.5 part, diformazan
Base Methanamide 0.3 part, triphenyl phosphite 1 part, dimethylbenzene 100 parts.
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| CN201410595059.XA CN104430395B (en) | 2014-10-30 | 2014-10-30 | A kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth |
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| CN201410595059.XA CN104430395B (en) | 2014-10-30 | 2014-10-30 | A kind of compounded cream for preventing and treating Caulis et Folium Brassicae capitatae diamondback moth |
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| CN104430395A CN104430395A (en) | 2015-03-25 |
| CN104430395B true CN104430395B (en) | 2016-08-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105660664A (en) * | 2016-02-19 | 2016-06-15 | 河北岗恩生物科技有限公司 | Azadirachtin aromatic-free missible oil and preparation method thereof |
| CN108040700A (en) * | 2017-12-19 | 2018-05-18 | 潘卫剑 | A kind of method for preventing wild cabbage diamondback moth |
| CN109221297A (en) * | 2018-10-30 | 2019-01-18 | 大新县科学技术情报研究所 | A kind of tomato special bio insecticide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998048627A1 (en) * | 1997-04-29 | 1998-11-05 | Medicarb Ab | Teat dipping agent |
| CN1335063A (en) * | 2001-06-04 | 2002-02-13 | 华南农业大学 | Insecticide compounded with nimbin and rotenone |
| CN102365944A (en) * | 2011-10-28 | 2012-03-07 | 海南正业中农高科股份有限公司 | Chitosan oligosaccharide composition for killing diamond back moths, its application and method |
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2014
- 2014-10-30 CN CN201410595059.XA patent/CN104430395B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998048627A1 (en) * | 1997-04-29 | 1998-11-05 | Medicarb Ab | Teat dipping agent |
| CN1335063A (en) * | 2001-06-04 | 2002-02-13 | 华南农业大学 | Insecticide compounded with nimbin and rotenone |
| CN102365944A (en) * | 2011-10-28 | 2012-03-07 | 海南正业中农高科股份有限公司 | Chitosan oligosaccharide composition for killing diamond back moths, its application and method |
Non-Patent Citations (1)
| Title |
|---|
| "新型生物杀虫剂印楝素的应用";程少敏 等;《新农业》;20111010(第10期);第46页中间栏最后1段 * |
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