CN102283230B - Synergistic insecticide composition taking novaluron and diafenthiuron as main active ingredients and application thereof - Google Patents
Synergistic insecticide composition taking novaluron and diafenthiuron as main active ingredients and application thereof Download PDFInfo
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Abstract
The invention discloses a synergistic insecticide composition taking novaluron and diafenthiuron as main active ingredients and application thereof. The novaluron and the diafenthiuron are used as the main active ingredients of the composition, and the weight ratio of the novaluron to the diafenthiuron is 5:1-1:4. The insecticide composition disclosed by the invention has an obvious synergistic effect on plutella xylostella, spodoptera litura, cabbage caterpillar and the like, and has good prevention and treatment effects on other injurious insects and mites on crops of vegetables, fruit trees, cotton, soybeans, tobacco and the like. Compared with a single preparation, the dosage of the composition is reduced, and the effect is improved, which is conductive to delaying the development of the drug resistance of injurious insects.
Description
Technical field
The invention belongs to composition pesticide, be specifically related to a kind ofly contain Rimon and the butyl ether urea is Synergistic insecticidal composition and the application thereof of main active.
Background technology
In recent years, because single drug and the medication of non-science, caused many insects that the agricultural chemicals of current use has been produced resistance, especially on some lepidoptera pests such as diamond-back moth, prodenia litura, cotton bollworm, beet armyworm etc., the control efficiency of medicament commonly used is difficult to the control requirement that reaches desirable.On the other hand, along with the enhancing of people's safety, environmental consciousness, the development difficulty of novel pesticide increase greatly, how science is used existing pharmacy variety, delays developing of pest resistance to insecticide, prolongs the service life of medicament, is problem demanding prompt solution.
Rimon belongs to process for preparation of benzoylurea compounds, it is a kind of high-efficiency low-toxicity insect growth regulator, IGR important in the process for preparation of benzoylurea compounds, tool stomach toxicity and action of contace poison, its mechanism of action is to suppress chitinous synthetic, insect enters dead worm peak after 2-3 days getting food, be mainly used in preventing and treating beet armyworm, prodenia litura, tomato moth, diamond-back moth, lepidoptera pests such as cotton bollworm.Be characterized in that low toxicity, lasting period long (two weeks), permeability are strong etc.Its shortcoming is the price height, has limited its scope of application and area.
Rimon (Novaluron); chemical name is N-[[3-chloro-4-[1; 1; 2-three fluoro-2-(trifluoromethoxy) ethyoxyls] phenyl] carbamoyl]-2; the two fluorobenzamides of 6-, English name is N-[[3-Chloro--4-[1,1; 2-trifluoro-2-(trifluoromethoxy) ethoxy] phenyl] carbamoyl]-2,6-di-fluorobenzamide.Its structural formula is:
CAS No.116714-46-6, molecular formula: C17H9C1F8N2O4, molecular weight: 492.70.
Physicochemical property: pure product are white powder, proportion 1.66 (22 ℃), fusing point 176-179 ℃, vapour pressure＜0.5mpa (40 ℃).During 25 ℃ of solvability in water 53.07 micrograms per litre; Other dissolution with solvents degree (20 ℃, g/L): methyl alcohol 41, acetone 460, toluene 72, n-hexane 0.13, n-octyl alcohol 8.9.Stable under air, illumination, DT 50:32 days (pH9), 70 days (pH7), 160 days (pH5) in water.
Toxicity: by China's pesticide toxicity grading criteria, Rimon belongs to low toxicity.Former medicine rat acute per os LD50＞5000 milligram/kilogram, chmice acute per os LD50＞5000 milligram/kilogram, rat acute is through skin LD50＞2000 milligram/kilogram.
Rimon belongs to benzoyl area kind and kills mite, insecticide, and a kind of insect growth regulator, IGR is chitin synthesis inhibitor.Be mainly used in preventing and treating beet armyworm, prodenia litura, tomato moth, diamond-back moth, cotton bollworm, lima bean pod borer, melon thin,tough silk snout moth's larva, tobacco worm, thrips, citrus leaf-miner, plant hopper etc.Tool stomach toxicity and action of contace poison, the unique insecticidal mechanism of tool: suppress insect decortication, desinsection, to kill ovum effective, insect has eaten the crop that sprays this medicine and had stopped getting food in 2 hours, enters dead peak period in 2-3 days.Be characterized in 1. low toxicity, suitable non-polluted farm product production.2. desinsection kills ovum, kills large and small larva, 14 days lasting periods.3. permeability is strong, positive spray medicine, the dead worm in the back side, dead ovum.4. resistance of rainwater washing against spraying the rainy drug effect that do not influence after back 15 minutes.
In China, because Rimon import price height, usable floor area only limits on the high part fruit and vegetables of economic value added, the application area is less, can not use in the crop pests control widely, and Rimon is not seen the control of insect that field crops such as being used in paddy rice, wheat is arranged in the document at home and abroad.
The butyl ether urea is a kind of novel thiocarbamide Insecticidal and acaricidal agent that vapour Ba-Jia Ji company develops the eighties.This medicine is a kind of selective insecticide, low toxicity, have tag, stomach toxicity, interior suction and fumigation action.Under the ultraviolet ray irradiation, in polypide, under the help of mixed-functional oxidase, be decomposed into a kind of carbodiimides, this material has mitochondrial function in the interior nerve cell of the pest body of obstruction, influences its respiration and power conversion, and insect is choked to death.Have stronger activity to having produced serious drug-fast insect on the vegetables, can prevent and treat aphid, aleyrodid, leafhopper, noctuidae pests and evil mite on various crop and the ornamental plants.To two spotted spider mite, diamond-back moth, cabbage caterpillar etc. have excellent insecticidal activity, especially carbamate, organic phosphor, pyrethrin pesticide are had the diamond-back moth of resistance, with this medicine control special efficacy is arranged, the insect more strong to these conventional pesticide resistances, more responsive to the butyl ether urea, killing effect is more good; Butyl ether urea (having another name called methamidophos) is other title (diafenthiuron): boccaccio, Pegasus, Polo.Chemical name is 1-tertiary butyl-3-(2,6-diisopropyl-4-Phenoxyphenyl) thiocarbamide, and English name: 3-(2,6-Diisopropyl-4-phenoxyphenyl)-1-tert-butyl-thiourea, its chemical constitution is
Molecular formula: C23H32N2OS, molecular weight: 384, CA registration number: 80060-09-9.
Physicochemical property: pure product are white powder, proportion 1.08 (20 ℃), 149.6 ℃ of fusing points, vapour pressure＜2 * 10-handkerchief (25 ℃).During 25 ℃ of solvability in water 62 micrograms per litre; In the time of 20 ℃, 40 grams per liters in methyl alcohol, 280 grams per liters in the acetone, 320 grams per liters in the toluene, 8 grams per liters in the ethane, 23 grams per liters in the n-octyl alcohol.Former medicine outward appearance is that white is to light grey powder, proportion 1.09 (20 ℃), pH7.5 (25 ℃).
Toxicity: by China's pesticide toxicity grading criteria, the butyl ether urea belongs to the low toxicity Insecticidal and acaricidal agent.Former medicine rat acute per os LD502068 milligram/kilogram, chmice acute per os LD50604 milligram/kilogram, rat acute be through skin LD50＞2000 milligram/kilogram, acute suction (4 hours) LC
50558 milligrams/meter
3
The butyl ether urea can effectively prevented and treated in the agricultural chemicals composition of diamond-back moth at present, and the cost performance height of butyl ether urea is also fine to the effect of high instar larvae.But, the quick-acting extreme differences of this medicament, and under higher dosage, some crops are damaged easily.
Insect such as diamond-back moth and cabbage caterpillar is under the condition of present long-term prescription, and resistance increases gradually, and the agent of agricultural chemicals list descends gradually to the effect of control of insect, and agriculture chemical compounding can obviously improve drug effect, and delays the generation of pest resistance.Still find no the Pesticidal combination that closes Rimon and butyl ether urea up to now.
Summary of the invention
The objective of the invention is for a kind of be the synergistic composition that uses, high resistance lepidoptera pest is had outstanding control efficiency on the suitable agricultural of main active with Rimon and butyl ether urea.
Another object of the present invention provides a kind of application of above-mentioned composition.
Be difficult to satisfy the control needs of insect serious day by day on the agricultural and evil mite in view of single agent, in order to realize purpose of the present invention, the inventor has carried out a large amount of compound screening tests, unexpected discovery Rimon and butyl ether urea are composite in certain proportion, and insects such as diamond-back moth, prodenia litura are had significant synergies.
On the basis of above-mentioned discovery, through composition is carried out symphyogenetic quantitative analysis, formed technical scheme of the present invention:
A kind of is the Synergistic insecticidal compositions of main active with Rimon and butyl ether urea, and said composition is main active with Rimon and butyl ether urea, and the mass ratio of Rimon and butyl ether urea is 5: 1～1: 40.
The preferable mass ratio of Rimon and butyl ether urea is 4: 1～1: 40 in this composition, and better mass ratio is 1: 1～1: 20.
Said composition is main active with Rimon and butyl ether urea, and in addition auxiliary agent and excipients are made any one agricultural and gone up available formulation, and be concrete as missible oil, suspending agent, aqueous emulsion, microemulsion, wetting powder or water-dispersible granules etc.
The adjuvant that the present composition uses in being processed as preparation comprises solvent, emulsifier, dispersant, wetting agent, stabilizing agent, antifreezing agent, thickener, pH conditioning agent, bleeding agent etc., and other is of value to the known substance that active ingredient is stablized and drug effect is brought into play in storing and using, all be the various compositions of using or allow use in the pesticidal preparations always, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to prescription.
The described composition of the embodiment of the invention can provide with the finished product preparation form, and namely each material mixes in the composition, and the composition of composition also can provide with single agent form, directly directly mixes in bucket or jar before the use, is diluted to required concentration then.
Specifically the present invention is composite by Rimon and the butyl ether urea that will grow the lasting period, obtains the new and effective multifunctional insecticide composition of a class.This insecticide has good preventive effect to the multiple high resistance lepidoptera pest that pickles pretty young woman and prodenia litura are easy to generate resistance; And suppress insect to the pesticide resistance generation of unitary agent (Rimon or butyl ether urea).
Composition of the present invention can be used for preventing and treating insect or the evil mite of harm plant, especially be suitable for preventing and treating the lepidoptera pest on the crops such as vegetables, fruit tree, cotton, paddy rice, tealeaves, tobacco, more particularly diamond-back moth, prodenia litura, beet armyworm, cotton bollworm, two spotted spider mite, cabbage caterpillar, tea geometrid, tea caterpillar etc.
Pesticidal combination of the present invention produces following beneficial effect compared with prior art: (1) is compared with single agent, and this Pesticidal combination has obvious synergistic effect to the anti-lepidoptera pest of height, has obviously improved control efficiency; (2) one medicines are controlled more, and a dispenser can prevent and treat various pests simultaneously, reduce control recruitment cost; (3) alternative high-toxic pesticide, and significantly reduce the field dosage, effectively reduce environmental pollution and residue of pesticide; (4) have concurrently quick-acting and long-acting; (5) compare with single agent, produce and the use cost reduction more remarkable effect; (6) suppress the lepidoptera pest insect to the resistance enhancing of agricultural chemicals; (7) reduction is to the toxicity of warm blooded animal; (8) compare with the agent of butyl ether urea list, safer to crop.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention is limited to these examples absolutely not.The following stated only is the present invention embodiment preferably, only is used for explaining the present invention, can not therefore be interpreted as the restriction to this aspect claim.
The combination of active principles of different agricultural chemicals is made agricultural chemicals, is a kind of mode effectively and efficiently of exploitation at present and development novel pesticide.The agricultural chemicals of different cultivars shows three kinds of type of action after mixing usually, i.e. summation action, and synergistic effect and antagonism, but be specially which kind of effect, and unpredictable, have only by a large amount of tests and just can know.Compound synergic is well filled a prescription, and can obviously improve actual control efficiency, reduces the usage amount of agricultural chemicals, thereby helps to delay the drug-fast generation of insect, is the important means of integrated control.
The present composition is active ingredient with Rimon and butyl ether urea, the synergistic function that combination antagonism section prodenia litura has between them, and be not only two kinds of simple additions of medicament, specifically be illustrated with following biologicall test example.
Biologicall test example 1: the composite toxicity test to prodenia litura of Rimon and butyl ether urea
Subjects: Rimon and butyl ether urea are composite raises to third-instar larvae prodenia litura, field collection pieces of an egg, indoor hatching
Test method: with reference to " the agricultural industry criteria NY/T1154.7-2006 of the People's Republic of China (PRC) ".The card punch that with diameter is 1cm breaks into leaf butterfly with fresh cabbage leaves, and dipping is 10 seconds in the soup for preparing, and is placed on the blotting paper after the taking-up and dries, and puts into 24 orifice plates then, every Kong Fangyi leaf dish; With little writing brush prodenia litura is chosen in 24 orifice plates, every Kong Fangyi cephalont covers double-layer water absorbing paper, then cover lid; Each is handled three times and repeats; 24 orifice plates are placed on 26-27 ℃ of thermostatic chamber carry out lucifuge raising, observed result behind 72 lab scales.Touching polypide motionless with tweezers is death standard.
Carry out statistical analysis with the DPS data processing software, calculate the LC50 of each medicament, press the abundant method of Sun Yun then and calculate co-toxicity coefficient (CTC)
The co-toxicity coefficient of mixture (CTC value) calculates by following formula:
ATI＝100×S/M
In the formula:
ATI---mixture actual measurement toxicity index;
The LC of S---standard insecticide
50, the position is every liter (mg/L) of milligram
The LC of M---intermixture
50,, unit is every liter (mg/L) of milligram
TTI＝TIA×PA+TIB×PB
In the formula:
The theoretical toxicity index of TTI-mixture;
TIA-A medicament toxicity index;
The percentage composition of PA-A medicament in mixture, unit are percentage;
TIB-B medicament toxicity index;
The percentage composition of PB-B medicament in mixture, unit are percentage.
CTC＝100×ATI/TTI
In the formula:
The CTC-co-toxicity coefficient;
ATI-mixture actual measurement toxicity index;
The theoretical toxicity index of TTI-mixture.
Composite co-toxicity coefficient (CTC) 〉=120 shows as synergistic effect; CTC≤80 show as antagonism; 80＜CTC＜120 show as summation action.
Measurement result shows that the proportioning of Rimon and butyl ether urea is 5: 1-1: in the time of between 40, have synergistic effect, especially 1: 1-1: in the time of between 20, its synergistic effect is more obvious, and co-toxicity coefficient is more than 205, and experimental data sees also table 1.
Table 1 different disposal is to the Toxicity Determination result of prodenia litura
| Handle | LC50(mg/L) | ATI | TTI | Co-toxicity coefficient CTC |
| Rimon | 0.66 | 100.00 | / | / |
| The butyl ether urea | 24.28 | 2.72 | / | / |
| Rimon 5: butyl ether urea 1 | 0.57 | 115.79 | 8378 | 138.21 |
| Rimon 1: butyl ether urea 1 | 0.62 | 106.45 | 51.36 | 207.26 |
| Rimon 1: butyl ether urea 5 | 1.58 | 41.77 | 18.87 | 221.36 |
| Rimon 1: butyl ether urea 10 | 2.72 | 24.26 | 10.91 | 222.40 |
| Rimon 1: butyl ether urea 20 | 4.20 | 15.71 | 7.35 | 213.74 |
| Rimon: butyl ether urea 40 | 8.50 | 7.76 | 5.08 | 152.76 |
Pesticidal combination of the present invention can be prepared into any one formulation that suitable agricultural is used with known method, and reasonable formulation is missible oil, suspending agent, aqueous emulsion, microemulsion, wetting powder and dispersive granule.Below describe with specific embodiment, all the prescription in percentage be mass percent, described active component Rimon and butyl ether urea.The processing technology of the various preparations of the present composition is prior art, can change to some extent according to different situations.
Embodiment 1:30% Rimon. butyl ether urea missible oil
Active component, emulsifier and the cosolvent ratio in prescription is added in the mixing kettle successively, stir, make 30% Rimon. butyl ether urea missible oil.
This embodiment is applied to prevent and treat prodenia litura on the soybean.With 30% Rimon. butyl ether urea missible oil is by the spraying of active ingredient 4 gram/mu thin up, and the control efficiency of 2 days, 5 days and 10 days is respectively behind the medicine: 65.2%, 93.3%, 94.8%.5% Rimon missible oil and 25% butyl ether urea missible oil adopt with the quadrat method use according to active ingredient 4 gram/mu and 20 grams/mu dosage respectively, and 2 days control efficiency is respectively 51.2%, 38.9% behind the medicine, the control efficiency of 5 days and 10 days is respectively 82.3%, 84.1% and 73.4%, 74.1% behind the medicine.The synergistic effect of the composite back of Rimon and butyl ether urea is obvious, and significantly better than single agent, and consumption obviously is less than the agent of butyl ether urea list to preventive effect, quick-acting and the lasting effect of prodenia litura.
Embodiment 2:41% Rimon. butyl ether urea suspending agent
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding and/or high speed shear, obtain 41% Rimon. butyl ether urea suspending agent.
This embodiment is applied to prevent and treat the wild cabbage diamond-back moth, and carries out safety testing, and test dispenser period is wild cabbage seedling stage (4-5 leaf phase).With 41% Rimon. butyl ether urea suspending agent is pressed composition 5 grams/mu thin up spraying, and 3 days control efficiency reaches 92.5% behind the medicine.5% Rimon missible oil and 50% butyl ether urea suspending agent adopt with quadrat method and use according to active ingredient 5 grams/mu and 20 grams/mu dosage respectively, and 3 days preventive effect is respectively 87.1% and 71.3% behind the medicine.
Observed the safety to cabbage seedling behind the medicine in 3 days: 41% Rimon. any symptom of chemical damage of not appearance that butyl ether urea suspending agent is handled, dish seedling growing way also is better than blank; And the seedling limb edge that the agent of butyl ether urea list is handled has obvious calcination phenomenon, especially tender leaf.
Present embodiment explanation, the composite synergistic effect afterwards of Rimon and butyl ether urea is obvious, to the preventive effect of diamond-back moth significantly better than single agent and safe.
Embodiment 3:30% Rimon. butyl ether urea wetting powder
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of prescription, after ultrafine crusher is pulverized, namely get 30% Rimon. butyl ether urea wetting powder.
This embodiment is applied to prevent and treat the wild cabbage beet armyworm.With 30% Rimon. butyl ether urea wetting powder is by the spraying of active ingredient 2 gram/mu thin up, and the preventive effect of 2 days, 5 days and 10 days is respectively 83.3%, 95.1%, 96.9% behind the medicine.5% Rimon missible oil and 50% butyl ether urea wetting powder adopt with quadrat method and use according to active ingredient 2 grams/mu and 20 grams/mu dosage respectively, and 2 days preventive effect is respectively 79.1%, 83.1% and 74.5%, 78.3% behind the medicine.The synergistic effect of the composite back of Rimon and butyl ether urea is obvious, to the preventive effect of beet armyworm significantly better than single agent.
Embodiment 4:20% Rimon. butyl ether urea missible oil
Active component, emulsifier and cosolvent are added in the mixing kettle successively by formula rate, stir, make 20% Rimon. butyl ether urea missible oil.
This embodiment is applied to prevent and treat European red mite.With 20% Rimon. butyl ether urea missible oil is by 3500 extraordinarily water dilution sprayings, and the control efficiency of 2 days, 5 days and 10 days is respectively 67.42%, 93.8%, 93.5% behind the medicine.5% Rimon missible oil and 25% butyl ether urea missible oil dilute to adopt according to 800 times and 1000 times respectively and use with quadrat method, 2 days control efficiency is respectively 53.1%, 37.2% behind the medicine, and anti-, the preventive effect of 5 days and 10 days is respectively 81.3%, 83.2% and 62.6%, 60.5% behind the medicine.The synergistic effect of the composite back of Rimon and butyl ether urea is obvious, to preventive effect, quick-acting and the lasting effect of European red mite significantly better than single agent.
Embodiment 5:40% Rimon. butyl ether urea water-dispersible granules
With active component, dispersant, wetting agent, disintegrant and filler according to the ratio of prescription mix all with, be ground into wetting powder through air-flow, add a certain amount of water mixing extruder grain again, obtain 40% Rimon after the drying screening divides. butyl ether urea water-dispersible granules.
This embodiment be applied to prevent and treat two generation the cotton cotton bollworm, with 40% Rimon. butyl ether urea water-dispersible granules is according to the spraying of active ingredient 4 gram/mu thin up, and the control efficiency of 3 days and 7 days is respectively 91.7% and 96.7% behind the medicine.5% Rimon missible oil and 70% butyl ether urea water-dispersible granules adopt according to active ingredient 4 grams/mu and 30 active ingredients gram/mu dosage respectively and use with quadrat method, 3 days preventive effect is respectively 83.4%, 89.2% behind the medicine, and 7 days preventive effect is respectively 72.2%, 52.6% behind the medicine.The synergistic effect of the composite back of Rimon and butyl ether urea is obvious, to the preventive effect of cotton bollworm significantly better than single agent.
Embodiment 6:21% Rimon. butyl ether urea aqueous emulsion
Active component, solvent, emulsifier are added together, make it be dissolved into even oil phase; Water, antifreeze, defoamer etc. are mixed, become even water; Under high-speed stirred, water is joined in the oil phase, form finely disseminated 21% Rimon. butyl ether urea aqueous emulsion.
This prescription is applied to prevent and treat tea geometrid.21% Rimon. butyl ether urea aqueous emulsion, 5% Rimon missible oil are according to active ingredient 2 grams/mu thin up spraying, 25% butyl ether urea missible oil is according to active ingredient 25 grams/mu thin up spraying, 2 days preventive effect is respectively 89.03%, 71.08% and 43.43% behind the medicine, and the preventive effect of investigating simultaneously smaller green leaf hopper in 7 days behind the medicine is respectively: 88.45%, 5% Rimon missible oil 73.35% and 25% butyl ether urea missible oil 75.34%.The synergistic effect of the composite back of Rimon and butyl ether urea is obvious, and the preventive effect of tea geometrid significantly better than single agent, and is had tea lesser leafhopper and well doublely to control effect.
Embodiment 7:22% Rimon. butyl ether urea microemulsion
Active component, solvent, emulsifier are added together, make and be dissolved into even oil phase; Under agitation, oil phase and water are mixed, make 22% Rimon. butyl ether urea microemulsion.
This embodiment is applied to prevent and treat the brassicaceous vegetable cabbage caterpillar, and according to active ingredient 4 grams/mu thin up spraying, 2 days, 5 days, 10 days preventive effects are respectively behind the medicine: 80.6%, 96.6%, 96.1%; 5% Rimon missible oil is respectively 75.2%, 84.1%, 87.9% by the preventive effect of active ingredient 4 grams/mu identical time of spraying; 15% butyl ether urea microemulsion is respectively 51.2%, 58.7%, 69.2% by the preventive effect of active ingredient 30 grams/mu identical time of spraying.
Claims (7)
1. one kind is the Synergistic insecticidal compositions of active component with Rimon and butyl ether urea, it is characterized in that said composition is active component with Rimon and butyl ether urea, and the mass ratio of Rimon and butyl ether urea is 5:1～1:40.
2. Synergistic insecticidal compositions according to claim 1, the mass ratio that it is characterized in that Rimon and butyl ether urea is 4:1～1:40.
3. Synergistic insecticidal compositions according to claim 2, the mass ratio that it is characterized in that Rimon and butyl ether urea is 1:1～1:20.
4. Synergistic insecticidal compositions according to claim 1 is characterized in that said composition is active component with Rimon and butyl ether urea, and in addition auxiliary agent and excipients are made any one agricultural and gone up available formulation.
5. Synergistic insecticidal compositions according to claim 1 is characterized in that formulation is missible oil, suspending agent, aqueous emulsion, microemulsion, wetting powder or water-dispersible granules.
6. the application of the described Synergistic insecticidal compositions of claim 1 on the control lepidoptera pest.
7. the application of the described Synergistic insecticidal compositions of claim 1 on control diamond-back moth, prodenia litura, beet armyworm, cotton bollworm, two spotted spider mite, cabbage caterpillar or tea geometrid insect.
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| 45.5%阿维菌素·丁醚脲悬浮剂防治小菜蛾田间药效试验;苏信宇等;《广西农业科学》;20081231;第39卷(第4期);第497-499页 * |
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