CN110278953B - Herbicide composition containing pyriftalid and pyraclonil and application thereof - Google Patents
Herbicide composition containing pyriftalid and pyraclonil and application thereof Download PDFInfo
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- CN110278953B CN110278953B CN201910701602.2A CN201910701602A CN110278953B CN 110278953 B CN110278953 B CN 110278953B CN 201910701602 A CN201910701602 A CN 201910701602A CN 110278953 B CN110278953 B CN 110278953B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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Abstract
The invention discloses a herbicide composition containing pyriftalid and pyraclonil and application thereof. The active ingredients of the herbicide composition are pyriftalid and pyraclonil, and the pyriftalid and auxiliary agents and/or fillers allowed in pesticides are prepared into corresponding formulations. Is used for preventing and killing weeds in paddy fields. The herbicide composition is a binary herbicide composition consisting of the pyriftalid and the pyraclonil, has obvious synergistic effect, has a combined action coefficient of more than 10, and is low in dosage and cost; the composition has good safety and low resistance risk, and has remarkable control effect on various gramineous weeds, broadleaf weeds and cyperaceae weeds.
Description
Technical Field
The invention belongs to the technical field of pesticides, and relates to a pesticide composition for preventing and treating farmland weeds, in particular to a herbicide composition containing pyriftalid and pyraclonil.
Background
The rice is the crops with the largest planting area, the highest yield and the largest consumption in China, and plays an important role in national economy. With the popularization of the simplified cultivation technology of rice, the harm of weeds in rice fields is increasingly serious, and the weeds in the rice fields mainly comprise barnyard grass, moleplant seeds, Leersia hexandra, digitaria sanguinea, paspalum distichum, eclipta alba, monochoria japonica, cyperus rotundus and the like. In the weed control process, the single continuous use of the chemical herbicide leads to the rise of the drug-resistant weed population on one hand, and particularly the drug-resistant gramineous weeds are more serious; on the other hand, the effective utilization rate of the chemical herbicide is reduced, the pesticide residue of soil and agricultural products exceeds the standard, and the safe production of rice is seriously threatened. The common herbicide in the rice field in the market at present has low activity, cannot effectively prevent and kill various weeds in the rice field at the same time, and particularly has poor effect on drug-resistant weeds. Therefore, the development of the high-efficiency, low-toxicity, economic and safe weeding compound preparation has important significance for weeding in rice fields.
The flurprim-ethyl is a new pesticide compound with the chemical name: 0- [2, 6-bis (4, 6-dimethoxy-2-pyrimidinyl) oxy ] benzoylbenzene (2-trifluoromethyl) carbaldehyde oxime. Flurpyrin belongs to acetolactate synthase inhibitor. The pyrimidine salicylic acid compound inhibits the synthesis of the acetic acid through the absorption of weed stems and leaves and blocks the branched chain of the amino acid biosynthesis. The fluroxypyr is a selective herbicide for paddy fields, can prevent and kill various gramineae and broadleaf weeds in the paddy fields, and particularly has obvious effect on barnyard grass. However, the herbicide has a single action target and is easy to generate drug resistance after being singly used for a long time.
Pyraclonil, chemical name: 1- (3-chloro-4, 5,6, 7-tetrahydropyrazolo [1,5-a ] pyrazol-2-yl) -5- [ methyl (prop-2-ynyl) amino ] pyrazole-4-carbonitrile. Pyraclonil is a protoporphyrinogen oxidase (PPO) inhibitor, when PPO activity is inhibited, protoporphyrinogen IX cannot be oxidized to generate protoporphyrin IX, peroxidation generated by light induction destroys cell components, cell leakage and photosynthesis are hindered, cells and organelles dry and rapidly disintegrate, and finally plant death is caused. The roots and leaf bases of the weeds are main absorption parts of the herbicide, and the pyraclonil is mainly used for preventing and killing gramineous weeds such as barnyard grass, crabgrass and moleplant seeds in paddy fields, broadleaf weeds such as monochoria vaginalis, ludwigia prostrata, Amaranthus aurita, Equisetum ramosissimum, felt bovit and monochoria chinensis, and cyperaceae weeds such as abnormal sedge, Iris lactea and cyperus rotundus. Pyraclonil belongs to low-resistance risk herbicides, but the herbicide has slightly poor control effect on the old barnyard grass and higher medication cost.
However, no combination of pyriftalid and pyraclonil has been reported so far.
Disclosure of Invention
Aiming at the problems, the invention provides a herbicide composition containing pyriftalid and pyraclonil and application thereof. The intensive research proves that after the pyriftalid and the pyraclonil are properly compounded, the herbicide composition with obvious synergism can be obtained. Can effectively prevent and kill various gramineous weeds, broadleaf weeds and cyperaceae weeds, and has obvious effect on resistant barnyard grass in particular.
The invention is realized by the following technical scheme
The herbicide composition contains the active ingredients of the pyriftalid and the pyraclonil, wherein the weight ratio of the pyriftalid to the pyraclonil is 1: 20-20: 1.
the herbicide composition containing the pyriftalid and the pyraclonil is characterized in that the weight ratio of the pyriftalid to the pyraclonil is 8: 3-1: 6.
the herbicide composition containing the pyriftalid and the pyraclonil is characterized in that the weight ratio of the pyriftalid to the pyraclonil is 2: 3.
the herbicide composition containing the pyriftalid and the pyraclonil is characterized in that the sum of the weight of the pyriftalid and the weight of the pyraclonil accounts for 2-75% of the total weight of the herbicide composition.
The herbicide composition containing the pyriftalid and the pyraclonil is characterized in that the sum of the weight of the pyriftalid and the weight of the pyraclonil accounts for 5-50% of the total weight of the herbicide composition.
The herbicide composition containing the pyriftalid and the pyraclonil takes the pyriftalid and the pyraclonil as active ingredients and is prepared into corresponding formulations with auxiliary agents and/or fillers allowed in pesticides.
A weeding suspending agent is prepared from the following components in percentage by weight:
2-75% of the active ingredients (the pyriftalid and the pyraclonil), 3-6% of a surfactant, 3-6% of ethylene glycol, 0.05-0.15% of carboxymethyl cellulose, 1-5% of sodium lignosulfonate, 0.1-0.3% of simethicone and the balance of water.
The herbicide composition containing pyriminobac-methyl and pyraclonil is characterized in that the surfactant is a composite surfactant compounded by diisooctyl sulfosuccinate and sodium dodecyl sulfate; the weight ratio of diisooctyl succinate sodium sulfonate to sodium dodecyl sulfate in the composite surfactant is 1-3: 1 to 3.
The composite surfactant comprises diisooctyl succinate sodium sulfonate and sodium dodecyl sulfate in a weight ratio of 5: 3.
the herbicide composition and the weeding suspending agent are applied to preventing and removing weeds in paddy fields.
Compared with the prior art, the invention has the following positive beneficial effects
The herbicide composition is a binary herbicide composition consisting of the pyriftalid and the pyraclonil, has obvious synergistic effect, and has a combined action coefficient of more than 10; the composition has good safety and low resistance risk, has excellent control effect on various gramineous, broadleaf and cyperaceous weeds, and particularly has obvious control effect on resistant barnyard grass.
The specific composite surfactant selected by the suspending agent has obvious synergistic effect, and compared with the conventional surfactant and a single surfactant, the selected composite surfactant has greatly improved suspension rate and long-term storage stability; the suspension property and the stability are better.
The weeding composition or weeding suspending agent is suitable for being used in paddy fields, can effectively prevent and kill various gramineous weeds, broadleaf weeds and cyperaceae weeds, and particularly has obvious effect on resistant barnyard grass; the dosage is obviously reduced, the use cost is reduced, the risk of drug resistance of weeds is low, and the like.
Detailed Description
The technical solutions of the present invention will be described in detail below by way of specific embodiments, but the present invention is not limited thereto.
The invention provides a herbicide composition containing pyriftalid and pyraclonil, the active ingredients of the herbicide composition are pyriftalid and pyraclonil, wherein the weight ratio of pyriftalid to pyraclonil is 1: 20-20: 1.
preferably, the weight ratio of the pyriftalid to the pyraclonil is 8: 3-1: 6; more preferably, the weight ratio of the pyriftalid to the pyraclonil is 2: 3.
in the herbicide composition, the sum of the pyriftalid and the pyraclonil accounts for 2-75% of the total weight of the herbicide composition. Preferably, the sum of the pyriftalid and the pyraclonil accounts for 5-50% of the total weight of the herbicide composition, and more preferably, the sum of the pyriftalid and the pyraclonil accounts for 10% of the total weight of the herbicide composition.
The active components can be prepared into corresponding formulations with auxiliary agents and/or fillers allowed in pesticides. Such as suspending agents, missible oil, aqueous emulsion, water dispersible granules, wettable powder, dispersible oil suspending agents, microemulsion and the like. Can be prepared by adopting a common preparation method.
The invention also provides a weeding suspending agent which is prepared from the following components in percentage by weight: 2-75% of active ingredient, 3-6% of surfactant, 3-6% of ethylene glycol, 0.05-0.15% of carboxymethyl cellulose, 1-5% of sodium lignosulfonate, 0.1-0.3% of dimethyl silicone oil and the balance of water.
Preferably, the weight percentage of the surfactant is 4%.
The surfactant is compounded by diisooctyl succinate sodium sulfonate and sodium dodecyl sulfate, wherein the weight ratio of the diisooctyl succinate sodium sulfonate to the sodium dodecyl sulfate is (1-3): 1 to 3. Preferably, the weight ratio of the diisooctyl succinate sodium sulfonate to the sodium dodecyl sulfate is 5: 3.
the invention also provides a preparation method of the weeding suspending agent, which comprises the following steps:
(1) mixing the components according to the requirements of components and quality, stirring the mixture into slurry, and putting the slurry into a ball mill for crushing;
(2) placing the crushed material in a sand mill for superfine crushing, and controlling the average particle size to be 2-4 mu m;
(3) homogenizing the superfine pulverized material in a homogenizer to homogenize the particles. Thus obtaining the weeding suspending agent with the pyriftalid and the pyraclonil as active ingredients.
Compared with the conventional surfactant and a single surfactant, the composite surfactant has higher suspension rate and more stable storage after being processed into a suspending agent. Better in suspensibility and long-term storage stability.
The invention also provides the application of the herbicide composition and the weeding suspending agent in preventing and removing weeds in paddy fields.
The invention also provides biological examples for the determination of the herbicide composition, which are as follows:
1. indoor Activity assay
Firstly, weeding tests are carried out on two active ingredients of pyriftalid and pyraclonil under greenhouse potting conditions to evaluate the weeding effect of the two ingredients. According to the weed control spectrum of the two active ingredients, the raw objects are selected from barnyard grass, moleplant seed and snakehead intestine, and the specific implementation conditions are as follows:
the preparation method of the test medicament comprises the following steps:
test agent solution: the technical scheme is that the pyriftalid and pyraclonil raw materials are accurately weighed according to the using dosage of table 1, dissolved by a proper amount of acetone (the acetone can completely dissolve the active drug), added into an aqueous solution containing 0.1 wt% of tween 80 emulsifier, uniformly stirred, prepared into a solution containing a certain amount of active ingredients, and treated by 17 medicaments in total. Blank control is solution treatment: an equivalent amount of acetone was added to an equivalent amount of 0.1% aqueous tween 80 emulsifier.
The test method is as follows: the activity of the pyriftalid and the pyraclonil on barnyard grass, moleplant seed and eclipta prostrata after being used singly or mixed is tested by a Gowing method. Filling a certain amount of soil in plastic pot bowls with the height of 10cm and the diameter of 7cm, respectively and uniformly sowing seeds of each weed to be tested in the plastic pot bowls, sowing 15 seeds in each plastic pot, covering with fine sandy soil with the thickness of 0.5-1 cm, and culturing in a greenhouse (30 ℃ in the day and 20 ℃ at night). After the seedlings of the weeds emerge regularly, the seedlings are fixed to 10 plants in each pot, and the greenhouse culture is continued. When the weeds grow to 2-4 leaf stage, the prepared liquid medicine is subjected to stem and leaf spraying treatment, the specific treatment application is shown in table 1, and the solution treatment is used as a blank control. For each treatment 4 replicates, a total of 72 pots per weed (18 treatments x 4 replicates). The stem and leaf spray is sprayed by a 3WP-2000 model walking spray tower of Nanjing agricultural mechanization research institute of agriculture. After treatment, the test material is placed in a greenhouse for continuous culture, the growth condition of weeds is observed regularly, the damage symptom and the growth inhibition condition of the target weeds are observed visually after 21 days, the fresh weight of the overground part is weighed, and the fresh weight inhibition rate (%) is calculated.
The mode of combined action of the herbicides was evaluated according to the Gowing method, which is formulated as follows:
e (%) - (control group fresh weight-treatment group fresh weight)/control group fresh weight × 100
E0(％)＝X+Y×(100-X)/100
C＝E-E0
In the formula, E0The herbicide is a theoretical prevention effect on weed inhibition after two active ingredients are mixed; e is the actual measurement control effect on weed inhibition after the two active ingredients are mixed; x is the control effect of the pyriftalid on the target weeds under the dosage; y is the control effect of the pyraclonil on the target weeds under the dosage; c is the combined action coefficient of the mixed preparation and is used for evaluating the synergistic action of the two active ingredients; when C is larger than 10, the effect is synergistic, when C is smaller than 10, the effect is antagonistic, and when C is within +/-10, the effect is additive.
TABLE 1 biological test results of herbicidal activity against barnyard grass with different proportions of pyriftalid and pyraclonil
The data show that (table 1) after the pyriftalid and the pyraclonil are compounded, the pyriftalid and the pyraclonil have good control effect on the barnyard grass, the two components have obvious synergistic effect after being compounded, and the combined action coefficients of the pyriftalid and the pyraclonil are both greater than 10 when the ratio is 8: 3-1: 6.
TABLE 2 biological test results of herbicidal activity against Euphorbia lathyris by different proportions of fluroxypyr ether and pyraclonil
The data show that (table 2) after the pyriftalid and the pyraclonil are compounded, the pyriftalid and the pyraclonil have good control effect on the stephania japonica, the two components have obvious synergistic effect after being compounded, and the combined action coefficients of the pyriftalid and the pyraclonil are both greater than 10 when the optimal proportion is 8: 3-1: 6.
TABLE 3 biological test results of different proportions of fluoropyrimidine's ether and pyraclonil on snakehead's herbicidal activity
The data show that (table 3) after the pyriftalid and the pyraclonil are compounded, the pyriftalid and the pyraclonil have good control effect on snakeheads, the two components have obvious synergistic effect after being compounded, and the combined action coefficients of the pyriftalid and the pyraclonil are both greater than 10 when the optimal proportion is 8: 3-1: 6.
Therefore, the active ingredients of the pyriftalid and the pyraclonil have very obvious synergistic effect and have high-efficiency control effect on barnyard grass, moleplant seed and eclipta prostrata. The active ingredient not only reduces the usage amount of the medicament and the usage amount of raw materials, but also reduces the production cost and has no risk to the resistance of weeds.
The present invention is described in more detail by the following specific examples, but the present invention is not limited to the scope of the present invention.
Example 1
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
2.5% of pyriftalid, 7.5% of pyraclonil, 2.5% of diisooctyl succinate sodium sulfonate, 1.5% of sodium dodecyl sulfate, 3% of ethylene glycol, 2% of sodium lignosulfonate, 0.1% of carboxymethyl cellulose, 0.2% of dimethyl silicone oil and the balance of water.
The preparation method comprises the following steps:
(1) mixing the components according to the requirements of components and quality, stirring the mixture into slurry, and putting the slurry into a ball mill for crushing;
(2) placing the crushed material in a sand mill for superfine crushing, and controlling the average particle size to be 2-4 mu m;
(3) homogenizing the superfine pulverized material in a homogenizer to homogenize the particles. Thus obtaining the weeding suspending agent with the pyriftalid and the pyraclonil as active ingredients.
Example 2
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
5% of pyriftalid and 10% of pyraclonil; the rest is the same as in example 1.
Example 3
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
2% of pyriftalid and 15% of pyraclonil; the rest is the same as in example 1.
Example 4
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
10% of pyriftalid and 10% of pyraclonil; the rest is the same as in example 1.
Example 5
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
15% of pyriftalid and 10% of pyraclonil; the rest is the same as in example 1.
Example 6
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
20% of pyriftalid and 10% of pyraclonil; the rest is the same as in example 1.
Comparative example 1
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
2.5% of pyriftalid, 7.5% of pyraclonil, 4% of diisooctyl succinate sodium sulfonate, 3% of ethylene glycol, 2% of sodium lignosulfonate, 0.1% of carboxymethyl cellulose, 0.2% of simethicone and the balance of water. Can be prepared by adopting a conventional preparation method.
Comparative example 2
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
2.5% of pyriftalid, 7.5% of pyraclonil, 4% of sodium dodecyl sulfate, 3% of ethylene glycol, 2% of sodium lignosulfonate, 0.1% of carboxymethyl cellulose, 0.2% of simethicone and the balance of water.
Comparative example 3
A herbicide composition containing pyriftalid and pyraclonil is a suspending agent and is prepared from the following components in percentage by weight:
2.5% of pyriftalid, 7.5% of pyraclonil, 4% of ethyl phenol polyoxyethylene ether sulfosuccinate, 3% of ethylene glycol, 2% of sodium lignosulfonate, 0.1% of carboxymethyl cellulose, 0.2% of dimethyl silicone oil and the balance of water.
The formulations prepared in the above examples were subjected to field trials as follows:
1. field test
Test agents: the herbicide of example 1.
And (3) test crops: rice (Zhenghai No. 10).
Control target: gramineous weeds such as barnyard grass, green bristlegrass, broad-leaved weeds such as snakehead gut, Amaranthus retroflexus and cyperaceae weeds such as sargassum heterotropoides.
The test method comprises the following steps: the herbicide of the invention is subjected to field efficacy experiments according to the pesticide field efficacy test criteria of the people's republic of China. The area of the cell used in the experiment is 20m2The cultivation conditions (soil, fertility, growth stage and crop row spacing) of all test districts are uniform, blank control and artificial weeding are set in the experiment, and the districts are arranged in random blocks. Directly sowing the rice in a dry field, and carrying out stem leaf weeding spraying at the 3-4 leaf stage of the rice and the 2-4 leaf stage of weeds. The plant control effect and fresh weight control effect of the weeds are investigated 30 days after the herbicide is applied, and the safety (phytotoxicity grading) of the herbicide on rice is determined. The results are shown in Table 4.
TABLE 4 field control effect and safety of herbicides
The grading standard of the phytotoxicity is as follows:
grade 1, the rice grows normally without any damage symptoms;
2 grade, the rice has slight phytotoxicity which is less than 10 percent;
grade 3, moderate phytotoxicity of rice, later recovery without affecting yield;
4, the rice has serious phytotoxicity and is difficult to recover, thereby reducing the yield;
grade 5, the rice has serious phytotoxicity and can not be recovered, thus causing obvious yield reduction or no harvest.
As can be seen from Table 4, the herbicidal composition of example 1 exhibited good control of grassy, broadleaf and sedge weeds in the field efficacy test, and the phytotoxicity rating for rice was 1, which was safe for rice.
2. Suspension test
The suspending agents prepared in the preparation examples 1 to 6 and the comparative examples 1 to 3 were subjected to a suspension property test. After the finished product is prepared, the product is respectively stored for 14 days at room temperature; the suspension rate is measured by a GB/T14825-2006 pesticide suspension rate measuring method after being stored at the high temperature of 54 +/-2 ℃ for 14 days, and the specific data are shown in the following table 5.
TABLE 5 pesticide suspension percentage determination data sheet
| After 14 days of storage at room temperature | After 14 days of high temperature storage | |
| Example 1 | 98.25 | 97.14 |
| Example 2 | 95.35 | 95.01 |
| Example 3 | 95.16 | 93.27 |
| Example 4 | 96.63 | 93.22 |
| Example 5 | 96.10 | 94.15 |
| Example 6 | 95.72 | 92.98 |
| Comparative example 1 | 90.31 | 88.26 |
| Comparative example 2 | 88.72 | 87.43 |
| Comparative example 3 | 88.63 | 86.57 |
As can be seen from the above table, examples 1 to 6 of the present invention are superior to comparative examples 1 to 3 in suspension performance, particularly when the ratio of the composite surfactant is 5: example 1 of 3 has the best suspension performance and has obvious synergistic effect.
Claims (5)
1. The weeding suspending agent is characterized by being prepared from the following components in percentage by weight:
2-75% of active ingredients, 3-6% of surfactant, 3-6% of ethylene glycol, 0.05-0.15% of carboxymethyl cellulose, 1-5% of sodium lignosulfonate, 0.1-0.3% of dimethyl silicone oil and the balance of water;
the active ingredients are pyriftalid and pyraclonil, wherein the weight ratio of pyriftalid to pyraclonil is 8: 3-1: 6; the surfactant is a composite surfactant compounded by diisooctyl succinate sodium sulfonate and sodium dodecyl sulfate; the weight ratio of diisooctyl succinate sodium sulfonate to sodium dodecyl sulfate in the composite surfactant is 1-3: 1 to 3.
2. A herbicidal suspension according to claim 1, wherein the weight ratio of sodium diisooctyl sulfosuccinate to sodium lauryl sulfate in the composite surfactant is 5: 3.
3. a herbicidal suspension according to claim 1, wherein the weight ratio of pyriftalid to pyraclonil is 2: 3.
4. a herbicidal suspension according to any one of claims 1 to 3, wherein the sum of the weight of pyriftalid and pyraclonil is from 5 to 50% by weight based on the total weight of the herbicidal composition.
5. Use of the herbicidal suspension according to claim 1 for controlling weeds in paddy fields.
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| CN107087619A (en) * | 2017-05-13 | 2017-08-25 | 南京高正农用化工有限公司 | Weeding composition containing topramezone and clodinafop-propargyl and application thereof |
| CN108064860A (en) * | 2016-11-15 | 2018-05-25 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
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| CN101292658A (en) * | 2002-11-21 | 2008-10-29 | 辛根塔参与股份公司 | Herbicidal composition |
| CN103333121A (en) * | 2013-07-22 | 2013-10-02 | 金坛市信德农业科技有限公司 | Fluorine-contained pyribenzoxim compound with herbicidal activity and preparation method thereof |
| CN105272924A (en) * | 2013-07-22 | 2016-01-27 | 金坛市信德农业科技有限公司 | O-[2,6-bis(4,6-dimethoxy-2-pyrimidinyl) oxyl] benzoylbenzene (2-trifluoromethyl) formaldoxime compounds with herbicidal activity and preparation method of compounds |
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