CN101946781B - Post-seedling complex herbicide for corn and paddy - Google Patents
Post-seedling complex herbicide for corn and paddy Download PDFInfo
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- CN101946781B CN101946781B CN2010102950566A CN201010295056A CN101946781B CN 101946781 B CN101946781 B CN 101946781B CN 2010102950566 A CN2010102950566 A CN 2010102950566A CN 201010295056 A CN201010295056 A CN 201010295056A CN 101946781 B CN101946781 B CN 101946781B
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Abstract
The invention relates to the technical field of pesticides, and discloses a post-seedling complex herbicide for corn and paddy, which comprises two active ingredients of flufenacet and fluroxypyr in a weight ratio of 0.4-1.33:1 preferably and the content of the flufenacet and the fluroxypyr is 10 to 85 mass percent of that of the complex herbicide. The complex herbicide can weed annual gramineous weeds in corn and paddy fields and weed broadleaf weeds and sedges, has obvious weeding effect and synergistic effect, can weed the weeds of crops within an integral growth season, has no influence on successive crops, and is an ideal herbicide.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to the complex weedicide after a kind of corn, rice seedling.
Background technology
Paddy rice is not only the main cereal crops of China, is also one of world's staple food crop.Nearly half population in the world, comprise the almost population in whole East Asia and Southeast Asia, and the rice of all take is food.Production spreads all over each continent except the South Pole.Eighties of last century late period, 4,000 hundred million kilograms of left and right of View of World Rice annual production average out to, approximately 1.45 hundred million hectares of cultivated areas.China's rice growing face accounts for 1/4 of national cereal crops, and annual about more than 3,500 ten thousand hectares, output accounts for over half.No matter cultivated area and output, all rank first in China cereal crops.The rice field of all rice workspaces of China, always have a large amount of weeds to occur.Medium crop smothering area accounts for more than 46% of total cultivated area, and wherein serious injured area is more than 11.5%, and annual loss grain is more than 200 hundred million kilograms thus.Therefore, the usage ratio of domestic water herbicides for use in paddy almost reaches 100%, and its dosage is very large.
Corn is the important cereal crops of China, is also important forage crop.In recent years, along with the development of the industries such as livestock breeding, food processing, wine-making industry and biodiesel, the market demand of corn constantly increases.China's maize sown area reached 2,850 ten thousand hectares in 2009, was only second to paddy rice, wheat planting area, occupied the 3rd, and also had the trend increased.
The weeds of corn field occur general, of a great variety.Spring corn and Huang-Huai-Hai summer corn crop smothering occur seriously northeastward, 82%～96% of crop smothering generation area Zhan Gai district cultivated area, and wherein medium above hazard area reaches 64～66%.Maize at Seedling Stage is subjected to crop smothering the most serious, the corn growth middle and later periods weeds little on the impact of output.When Maize Seedling was subjected to weeds harm, plant was short and small, bar spire Huang, causes the middle and later periods corn growth bad, Severe Reduction.Therefore, the chemical control of corn field weed all after broadcasting before seedling and seedling after early stage two critical periods carry out.
Flufenacet is oxygen acetanil class weed killer herbicide, Bayer A.G's exploitation in 1988, and common name flufenact, commodity are called Axiom, Herald, Terano, Epic, Arist.
Mainly by suppressing cell division, play a role.In the U.S., South Africa, ,Ya state, Europe and South America, did a large amount of field trials in 1988 to 1994, test shows that this kind processes with 120-200g/ha, before can effectively preventing and kill off the bud of annual gramineous weed and broad leaved weed and early stage weeding after bud, this active component belong to aryloxyl acetamide type compound the same as mefenacet, with the chloro-acetyl amine weed killer herbicide, have similar control of weeds spectrum, can extensively prevent and kill off annual gramineous weed, nutgrass flatsedge and some granule broad leaved weeds.Flufenacet is mainly used in soil treatment, before bud, all can use after bud.Be applicable to corn, corn, cotton, paddy rice and other crops and prevent and kill off main weeds.Flufenacet can be composite with the weed killer herbicide piperazine humulone (metribuzin) of preventing and kill off broad leaved weed, metosulam (metosulam), Diflufenican (diflufenican) etc., enlarges the herbicide spectrum.With mefenacet, compare, flufenacet has higher activity, is suitable for more crop management of weeds.
Fluroxypyr is the inner sucting conduction type herbicide after seedling, is absorbed by plants very soon after medicine, makes sensitive plant the reaction of typical hormone herbicide occur, and plant is lopsided, distortion, finally withered.Be applicable to the ground such as wheat, barley, corn, grape, orchard, pasture, forest land, lawn and prevent and kill off broad leaved weed; As clearvers, volume stem knotweed, kitchen garden, black nightshade, field bindweed, knotweed, amaranth etc., invalid to grassy weed.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can prevent and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, and respond well corn, paddy rice post-emergence complex weedicide.。
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of corn, paddy rice post-emergence complex weedicide, comprise flufenacet and fluroxypyr, and the weight ratio of flufenacet and fluroxypyr is 0.4: 1-1.33: 1.
As preferably, in complex weedicide of the present invention, the weight ratio of flufenacet and fluroxypyr is 2: 3-1: 1.
More preferably, in complex weedicide of the present invention, the weight ratio of flufenacet and fluroxypyr is 0.8: 1.
On the other hand, the invention provides the quality percentage composition of flufenacet and fluroxypyr in biological described complex weedicide is 10～85% of described complex weedicide.
As preferably, in complex weedicide of the present invention, after two kinds of active components of flufenacet and fluroxypyr are composite according to above-mentioned weight ratio, make the formulations of pesticide such as missible oil, oil-suspending agent, wetting powder, water dispersible granules.
Synergy after being mixed with the co-toxicity coefficient method evaluation of Sun Yunpei, result shows that flufenacet, fluroxypyr are in 0.4-1.33: the composite co-toxicity coefficient of 1 ratio obviously is greater than 120, reach remarkable synergistic effect, illustrate that flufenacet, fluroxypyr are in 0.4-1.33: 1 ratio is mixed comparatively suitable, and annual single broadleaf weed is had significant synergies.
Security test test to corn shows, the composite cauline leaf processing of flufenacet fluroxypyr, the ED of inhibition corn growth 10%
10=944.4554, the ED of inhibition weed growth 90%
90=236.3907, selectivity factor is 944.4554/236.3907=4.00>2, thinks that this medicament has obvious selectivity, and the flufenacet fluroxypyr has good safety to corn.
Complex weedicide of the present invention shows by the field control effectiveness test of 2 years, and in the corn 3-5 leaf phase, weeds 1-5 leaf does not wait the phase, and corn has no symptom of chemical damage from the dispenser to the maturing stage, to corn safety.The preventive effect of weeds reached more than 80% in 10 days, reached more than 90% in 30 days, along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can be controlled the weeds of crop in whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact.
Compared with prior art, complex weedicide of the present invention can be prevented and kill off grassy weed, can prevent and kill off broad leaved weed again, to corn safety, and on succession crop without impact, have a good application prospect.
Embodiment
The invention discloses a kind of corn, paddy rice post-emergence complex weedicide that comprises flufenacet and two kinds of active components of fluroxypyr, those skilled in the art can use for reference this paper content, suitably improve technological parameter and realize.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the artly, they all are deemed to be included in the present invention.Product of the present invention and application are described by preferred embodiment, the related personnel obviously can change methods and applications as herein described or suitably change and combination within not breaking away from content of the present invention, spirit and scope, realize and apply the technology of the present invention.
Below in conjunction with embodiment, further set forth the present invention:
Embodiment 1: the wetting powder (flufenacet: fluroxypyr=2: 3) of preparation complex weedicide of the present invention
35% flufenacet fluroxypyr wetting powder, 35% refers to that flufenacet and two kinds of active components of fluroxypyr account for the percentage of gross weight.Get the 14kg flufenacet, the 21kg fluroxypyr, 6kg dispersant NN0,3kg wetting agent K12, White Carbon black complements to 100kg.Through fully mixing, air-flow crushing, mixing, obtain wetting powder.
Embodiment 2: the missible oil (flufenacet: fluroxypyr=8: 10) of preparation complex weedicide of the present invention
18% flufenacet fluroxypyr missible oil, 18% refers to that flufenacet and two kinds of active components of fluroxypyr account for the percentage of gross weight.Get the 8kg flufenacet, the 10kg fluroxypyr, 10kg emulsifier 2201 (polyoxyethylene nonylphenol ether), dimethylbenzene complements to 100kg.Pass through the abundant mixing preparation of modulation kettle, be packaged to be the missible oil product.
Embodiment 3: the oil-suspending agent (flufenacet: fluroxypyr=1: 1) of preparation complex weedicide of the present invention
20% flufenacet fluroxypyr oil-suspending agent, 20% refers to that flufenacet and two kinds of active components of fluroxypyr account for the percentage of gross weight.Get the 10kg flufenacet, the 10kg fluroxypyr, 8kgPluronic125, the 5kg propane diols, the 8kg xanthans, the 1kg methylated vegetable oil, water complements to 100kg.Pass through abundant mixing preparation, ball mill grinding, adjust, be packaged to be oil-suspending agent.
Embodiment 4: the water dispersible granules (flufenacet: fluroxypyr=4: 3) of preparation complex weedicide of the present invention
84% flufenacet fluroxypyr water dispersible granules, 84% refers to that flufenacet and two kinds of active components of fluroxypyr account for the percentage of gross weight.Get the 48kg flufenacet, the 36kg fluroxypyr, 7kg D-425,5kg EFW, 5kg ammonium sulfate, the 2kg polyethylene glycol, kaolin complements to 100kg.Through fully mixing, air-flow crushing, mixing, granulation, drying and screening, obtain water dispersible granules.
Embodiment 5: flufenacet and fluroxypyr cauline leaf are processed the synergy toxicity and are measured
1, test objective
Under greenhouse experiment, adopt pot-culture method, the herbicidal effect of research flufenacet, fluroxypyr binary built, and estimate the synergy type of the two different proportion after mixed by the co-toxicity coefficient method of Sun Yunpei, for the rational mixture of flufenacet and fluroxypyr provides scientific basis.
2, experimental condition
2.1 for studying the thing corn variety: tuck in single No. 2
2.2 for examination weeds lady's-grass (Digitaria sanguinalis (Linn.) Scop.), green foxtail (Setaria viridis (L.) Beauv.), Amaranthus retroflexus (Amaranthus retroflexus L.), lamb's-quarters (Chenopodium album L.), difformed galingale herb (Cyperus difformis L.) (upper one year the field seed of gathering, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, carry out the cultivation of test material, temperature 25-35 ℃.Choosing diameter is 15cm, is highly the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, in alms bowl, packs into and prepares in advance the loam of sterilizing to the high 10cm of alms bowl place, from bottom, soaks into soil with clear water.During test, every kind of weed seed 30-40 grain is evenly put into to basin, earthing 0.5cm, should supplement the required moisture of growth between the weeds culture period.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days after medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
The former medicine of 95% flufenacet (self-control sample, Anhui Fengle Agricultural Co., Ltd);
The former medicine of 95% fluroxypyr (Anhui Fengle Agricultural Co., Ltd).
3.1.2 reagent agent liquid preparation
With electronic balance, take quantitative former medicine, add appropriate emulsifier, use acetone solution, finally with 0.1% the POLYSORBATE 80 aqueous solution, above-mentioned former medicine is diluted to desired concn.
3.1.3 experimental scheme
3.1.3.1 the synergy of flufenacet and fluroxypyr
Flufenacet, fluroxypyr single dose and 5 flufenacets and fluroxypyr mixture preparation are established respectively to 5 dosage, and described ratio is the active component weight ratio of flufenacet and fluroxypyr.Separately establish blank, each test is processed and is repeated 4 times.Treatment agent dosage refers to table 1.
Table 1 test is processed and test level (concentration ga.i./mu)
3.2 application method
3.2.1 application method
In 3 leaf phases of corn, the spraying of weeds 2-4 leaf phase cauline leaf, process.The spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, the conventional spray method in simulation field.Shower nozzle is Fan spray head, and model is the Teejer8002E type, 40 kg/acres of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liter/mins of flows.
3.2.2 spraying time and number of times
Tested in the 3 leaf phases of corn and carry out the reagent spray processing, dispenser 1 time.
4 investigation methods
After dispenser, record in detail the symptom of being injured of corn and weeds, 20d after medicine, carry out the fresh weight measurement, and compare with control treatment, calculates the fresh weight preventive effect.
4.1 synergy assay method
Synergy type after result of the test is mixed with the co-toxicity coefficient method evaluation of Sun Yunpei.According to SUN, Y-P (Sun Yunpei) method is calculated its actual toxicity index, the theoretical toxicity index of mixture, co-toxicity coefficient.The concentration logarithm of take is X, and damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard medicament LD
50The LD of/mixture
50* 100
Theoretical toxicity index=∑ (toxicity index of reagent agent * percentage of this medicament active ingredient in mixture)
The actual toxicity index of co-toxicity coefficient=mixture/theoretical toxicity index * 100
The flufenacet of take in test is the standard medicament.
Criterion: co-toxicity coefficient<80 are antagonism, between 80-120, are summation action, and>120 are synergistic effect.
5 results and analysis
5.1 the synergy of flufenacet and fluroxypyr
5.1.1 flufenacet and fluroxypyr are mixed to the fresh weight preventive effect of weeds, the results are shown in Table 2.
Table 2 flufenacet and the fluroxypyr fresh weight preventive effect of 20d to weeds after medicine that be mixed
In table, control efficiency is the mean value of four data.
5.1.2 flufenacet and fluroxypyr are mixed to the synergy of weeds
As shown in Table 2: toxic action situation and the preventive effect of medicament to weeds.By formula, calculate its virulence regression equation, LD separately
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 3.
Table 3: flufenacet and fluroxypyr are mixed to the synergy of weeds
As can be known by test, the co-toxicity coefficient of processing C, D, E, F, G is respectively: 165.28,208.03,235.66,186.54,123.98, and co-toxicity coefficient all is greater than 120, has synergistic effect.Wherein with the co-toxicity coefficient of processing E, obviously be greater than 120, reach remarkable synergistic effect.
5.1.3 conclusion (of pressure testing)
As can be known by testing, it is comparatively suitable that flufenacet, fluroxypyr are mixed in 8: 10 ratios, and annual single broadleaf weed and nutgrass flatsedge are had significant synergies.
6 overall merits
By above synergy measurement result, shown, flufenacet and fluroxypyr the two with the composite best results of the ratio of 8: 10.
Embodiment 6: the composite cauline leaf of flufenacet fluroxypyr is processed the Security test test to corn
1, test objective:
Under greenhouse experiment, adopt pot-culture method, research flufenacet, fluroxypyr binary built cauline leaf are processed the safety to corn, for the rational mixture of flufenacet and fluroxypyr provides scientific basis.
2, experimental condition
2.1 for studying the thing corn variety: tuck in single No. 2
2.2 for examination weeds lady's-grass (Digitaria sanguinalis (Linn.) Scop.), green foxtail (Setaria viridis (L.) Beauv.), Amaranthus retroflexus (Amaranthus retroflexus L.), lamb's-quarters (Chenopodium album L.), difformed galingale herb (Cyperus difformis L.) (upper one year the field seed of gathering, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, carry out the cultivation of test material, temperature 25-35 ℃.Choosing diameter is 15cm, is highly the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, in alms bowl, packs into and prepares in advance the loam of sterilizing to the high 10cm of alms bowl place, from bottom, soaks into soil with clear water.During test, 20, every kind weed seed 30-40 grain of corn seed is evenly put into to basin earthing 0.5cm, put into greenhouse and cultivate (25-30 ℃), between maize seedling and weeds culture period, should supplement the required moisture of growth.After all sprouting, stay the seedling of 10 strain stalwartnesses, dispenser is processed when maize seedling grows to 3 leaf phases and weeds and grows to 2～5 leaf.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days after medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
The grand former medicine of 95% flufenacet sulphur (self-control sample, Anhui Fengle Agricultural Co., Ltd);
The former medicine of 95% fluroxypyr (Anhui Fengle Agricultural Co., Ltd).
3.1.2 reagent agent liquid preparation
With electronic balance, take quantitative former medicine, add appropriate emulsifier, use acetone solution, finally with 0.1% the POLYSORBATE 80 aqueous solution, above-mentioned former medicine is diluted to desired concn.
3.2 application method
3.2.1 application method
In 3 leaf phases of corn, the spraying of weeds 2-5 leaf phase cauline leaf, process.The spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, the conventional spray method in simulation field.Shower nozzle is Fan spray head, and model is the Teejer8002E type, 40 kg/acres of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liter/mins of flows.
3.2.2 spraying time and number of times
Tested in the 3 leaf phases of corn and carry out the reagent spray processing, dispenser 1 time.
4 investigation and computational methods
4.1 crop investigation
After dispenser, investigation is respectively processed corn and is had or not symptom of chemical damage, records in detail symptom of chemical damage, grade if having, and after medicine 20 days, measure and respectively process the corn fresh weight, calculate the fresh weight inhibiting rate, with the safety of clear and definite test medicine to corn.
4.2 weeds investigation
After dispenser, record in detail the symptom of being injured (as growth inhibition, chlorosis, deformity etc.) of weeds, after medicine 20 days, weeds acrial part fresh weight was respectively processed in weighing, calculated the fresh weight preventive effect of weeds.
4.3 computational methods
With DPS software, the logarithm value of drug dose and the probability value of corn fresh weight inhibiting rate are carried out to regression analysis, the dosage ED when calculating correlation coefficient and suppressing crop 10%
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
5 results and analysis
5.1 flufenacet fluroxypyr cauline leaf is processed the safety to corn
The safety evaluatio standard, in Table 4, was observed after dispenser in 2 days, and it is all normal that each concentration of flufenacet fluroxypyr is processed corn, there is no obvious symptom of chemical damage.After dispenser, 20 days 20% flufenacet fluroxypyr oil-suspending agents, only have high concentration 1600mg/kg to process corn and slightly suppress growth in Table 5 the inhibitory action of corn.。
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
The inhibitory action of table 5 20% flufenacet fluroxypyr oil-suspending agent (OF) to corn
The fresh weight preventive effect of table 6 20% flufenacet fluroxypyr oil-suspending agent (OF) to weeds
Toxic action situation and the preventive effect of this medicament to weeds, calculate its virulence regression equation, LD respectively by formula as shown in Table 6
50, list in table 7.
Table 7: virulence regression equation and LD
50
| Process | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝0.4166+2.4709x | 0.9937 | 71.6085 | 62.7475～81.7208 |
As shown in Table 7: the LD of 20% flufenacet fluroxypyr oil-suspending agent
50For: 71.6085,95% confidence intervals are 62.7475～81.7208.
5.2 flufenacet fluroxypyr cauline leaf is processed the selectivity index to corn and weeds
By table 5, table 6, by DPS software, try to achieve the ED that suppresses corn growth 10%
10=944.4554, the ED of inhibition weed growth 90%
90=236.3907, selectivity factor is 944.4554/236.3907=4.00>2, thinks that this medicament has obvious selectivity, can carry out field control effectiveness test.
6 overall merits
6.1 this result of the test shows, the processing of flufenacet fluroxypyr cauline leaf is processed slight the inhibition corn growth except high concentration, and it is normal that other processes corn.
6.2 as can be known by Toxicity Determination, the flufenacet fluroxypyr has good control efficiency to weeds.
Embodiment 7: complex weedicide field control effectiveness test of the present invention
Complex weedicide of the present invention shows by the field control effectiveness test of 2 years, in 3～5 leaf phases of paddy rice, weeds 1-5 leaf does not wait the phase, utilize 25,30,35,60 g/acres of 84% flufenacet fluroxypyr of the present invention (36% flufenacet+39% fluroxypyr) water-dispersible grain agent doses, being watered 40 kg/acres sprays, 10,30 days and maturing stage range estimation Security of rice and weeds preventive effect, surveyed all preventive effects, result such as following table in 10,30 days:
By range estimation, 75% flufenacet fluroxypyr WG is to rice safety.25 g/acres of preventive effects of weeds are more than 80%, reached more than 90% in 30 days, increase along with dosage, preventive effect obviously strengthens, 30 g/acres of corn fields, can reach good herbicidal effect, with wherein a kind of active ingredient comparison of independent use, enlarged the herbicide spectrum, broad leaved weed is had to obvious synergistic effect.A dispenser can be controlled the weeds of crop in whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, without impact, little to the pollution of environment on second stubble crop, to people, animal, birds and beneficial organism safety, is conducive to keep ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in production process, have no adverse effects to ecotope.It is the desirable complex weedicide of current control efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the complex weedicide can be used for after the corn, rice seedling, is characterized in that, active ingredient is flufenacet and fluroxypyr, and the weight ratio of flufenacet and fluroxypyr is 0.4: 1-1.33: 1.
2. complex weedicide according to claim 1, is characterized in that, the weight ratio of flufenacet and fluroxypyr is 2: 3-1: 1.
3. complex weedicide according to claim 1, is characterized in that, the weight ratio of flufenacet and fluroxypyr is 0.8: 1.
4. complex weedicide according to claim 1, is characterized in that, the quality percentage composition of flufenacet and fluroxypyr is 10～85% of described complex weedicide.
5. according to the described complex weedicide of claim 1-4 any one, it is characterized in that, described complex weedicide is missible oil, oil-suspending agent, wetting powder, water dispersible granules.
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| CN104068030A (en) * | 2014-06-25 | 2014-10-01 | 周瑛 | Herbicidal pesticide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102671A (en) * | 2004-12-17 | 2008-01-09 | 株式会社Lg生命科学 | Synergistic herbicidal compositions |
| CN101578046A (en) * | 2006-12-11 | 2009-11-11 | 伊萨格罗股份公司 | Herbicidal compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102671A (en) * | 2004-12-17 | 2008-01-09 | 株式会社Lg生命科学 | Synergistic herbicidal compositions |
| CN101578046A (en) * | 2006-12-11 | 2009-11-11 | 伊萨格罗股份公司 | Herbicidal compositions |
Non-Patent Citations (2)
| Title |
|---|
| 杨红福 等.除草剂氯氟吡氧乙酸在油菜田中的应用研究.《江苏农业科学》.2009,(第6期),第167-168页. |
| 除草剂氯氟吡氧乙酸在油菜田中的应用研究;杨红福 等;《江苏农业科学》;20091231(第6期);第167-168页 * |
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