CN1389116A - Rice field herbicide for early and middle stage application - Google Patents
Rice field herbicide for early and middle stage application Download PDFInfo
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- CN1389116A CN1389116A CN 02113196 CN02113196A CN1389116A CN 1389116 A CN1389116 A CN 1389116A CN 02113196 CN02113196 CN 02113196 CN 02113196 A CN02113196 A CN 02113196A CN 1389116 A CN1389116 A CN 1389116A
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Abstract
The present invention relates to an early and intermediate stage haulm weedcide for rice field. The effective component isoprotuion: quinclorac: dimethyl tetrachlorosodium is 1:0.02-100:0.6-10, optimum selected ratio is 1:0.5-1:0.5-1, and its composition also contains auxiliary component dispersing agent and cleaning agent, their content is respectively 1-8% of total weight of effective component, also contains proper quality of filling material. Said product can obtain good synergistic effect and obvious weed-killing effect, and is applicable to early and intermediate stage weed control in rice field where seedlings come into 2-8 leaves, and its application optimum period is long to 20 days.
Description
(one) technical field
The present invention relates to a kind of herbicide for paddy field, particularly be applicable to the rice field early metaphase foliar herbicide of using during rice seedling 2～8 leaves, belong to pesticide field.
(two) background technology
In recent years, the rice cropping in the vast rural area of China is ploughed the back broadcasting method by traditional elder generation and is developed into light cultivation methods such as no-tillage and direct-seeding and rice cover wheat direct seading rice, alleviated peasant's labour intensity greatly, but the problem of thereupon bringing is, live field weed amount is of a great variety greatly, and particularly moleplant seed reaches with barnyard grass grass class weeds obviously increases than general field.Though and the weed killer herbicides such as Acetochlor, butachlor and complexing agent thereof that present China is used for paddy field weeding can be prevented and treated multiple weeds, but broad spectrum activity is not high, still have suitable kind of weeds can't kill or preventive effect relatively poor, particularly can not kill moleplant seed, even the seedling of wound phenomenon is arranged, can not adapt to the weeding needs in live field.In addition, this class weed killer herbicide majority can only be used behind the bud before the bud of paddy rice, and the medication phase is generally shorter, misses the optimal application phase easily and the phenomenon of the drug effect shakiness that occurs missing the season.Therefore press for the wide spectrum developing a kind of suitable rice direct seeding field and use at present, efficiently, effectively use long weed killer herbicide of phase.
(3) summary of the invention
The objective of the invention is the weeding demand at China's rice direct seeding field, a kind of rice field early metaphase foliar herbicide is provided, it can overcome the shortcoming of above-mentioned traditional herbicide, has broad weed-killing spectrum, to rice safety, effectively uses long characteristics of phase.
Paddy rice early metaphase foliar herbicide of the present invention contains active ingredient isoproturon, 2 chloro-quinolinic acids and 2 first, 4 chlorine sodium, also contain auxiliary element dispersant, remover, all the other are filler, the weight ratio of three kinds of active ingredients is an isoproturon: 2 chloro-quinolinic acids: 2 first, 4 chlorine sodium=1: 0.2～100: 0.6～10, better ratio is 1: 0.4～4: 0.4～2, and first-selected ratio is 1: 0.5～1: 0.5～1; The content of dispersant and detergent be respectively three kinds of active ingredients total amount 3～8%, filler is an amount of.
Wherein the chemical formula of isoproturon is
The chemical constitution of 2 chloro-quinolinic acids
, the chemical structural formula of 2 first, 4 chlorine sodium is
Detergent is
Dispersant NNO is a di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate; Filler is common diatomite.
Isoproturon was a kind of dry land herbicide in the past, human was not arranged in the past in paddy field weed-killer.The inventor successfully is used for paddy field weed-killer with it, and through the experiment discovery, use it for the paddy field, removing activity heightens, thereby consumption reduces, safety improves, after it and 2 first, 4 chlorine sodium and 2 chloro-quinolinic acids were combined into ternary preparation of the present invention, synergy was obvious, and spread spectrum is made good use of, improved the activity of using separately separately greatly, herbicidal effect was even more ideal when used in live field.Be applicable to the stems and leaves of rice early metaphase, be i.e. all can use optimum period for applying fertilizer broad, broad weed-killing spectrum, highly effective and safe in about 20 days during seedlings of cereal crops growth 2～8 leaves.Weeding especially no-tillage for the Direct-seeding Rice weeding and the interplanting direct seading rice provides a kind of inorganic agent of seeing careless weeding.
(four) embodiment
Embodiment 1 (weed killer herbicide of the present invention prepares example)
By isoproturon: 2 chloro-quinolinic acids: the weight ratio of 2 first, 4 chlorine sodium=1: 0.78: 0.67 takes by weighing 9 kilograms of isoproturons, 7 kilograms of 2 chloro-quinolinic acids, 6 kilograms in 2 first, 4 chlorine sodium, take by weighing 0.9 kilogram of detergent, 1 kilogram of dispersant, 4.5 kilograms in filler diatomite, stir 0.5 hour or more with agitator above material, send in the airslide disintegrating mill and spray refinement, get the above particulate finished product of 400 orders, restrain or the 80 specification packing that restrain with every bag 40,60 with high pressure draught.
Embodiment 2 (the application effect example of active ingredient different proportion)
Three kinds of active ingredients of weed killer herbicide of the present invention are mixed with 10 sequence number reagent of different proportion, and every kind of reagent is used three groups of unifacial leaf dogstail and three groups of dicotyledonous water peanuts respectively, and with the contrast of not medication group, result of the test is listed in table one.Table one is the result of the test that Suzhou City precious band agricultural chemicals company carries out biologicall test to above-mentioned each sequence number reagent.</entry></row></tbody></tgroup></table></tables>Calculate isoproturon in sequence number 1～sequence number 9 each reagent according to each composition effective ingredient consumption of upper table: 2 chloro-quinolinic acids: the proportioning of 2 first, 4 chlorine sodium is as follows respectively: sequence number 1 is that 1: 100: 10 sequence number 6 is that 1: 0.01: 0.07 sequence number 2 is that 1: 3: 1 sequence number 7 is that 1: 0: 0 sequence number 3 is that 1: 1: 0.08 sequence number 8 is that 0: 1: 0 sequence number 4 is that 1: 0.78: 0.67 sequence number 9 is that 0: 0: 1 sequence number 5 is 1: 0.25: 4.5
From table one data as seen:
It reaches 94.8% to the average preventive effect of unifacial leaf barnyard grass grass sequence number 4 reagent, water peanut preventive effect 90.6%, and the population mean preventive effect of single broadleaf weed reaches 90.4%.Its active principle ratio is isoproturon: 2 chloro-quinolinic acids: 2 first, 4 chlorine are
Sequence number 1 reagent up to 99.1%, and to the anti-heterodyne of broad leaved weed, only is 38.9% to barnyard grass grass preventive effect.So overall preventive effect only 68.9%.Its active ingredient ratio is isoproturon: 2 chloro-quinolinic acids: 2 first, 4 chlorine are 1: 100: 10.
Up to 89%, but to dogstail preventive effect only 9.3%, thereby general effect only is 49.5% to sequence number 5 reagent to the broad leaved weed preventive effect, and its active ingredient ratio is isoproturon: 2 chloro-quinolinic acids: 2 first, 4 chlorine are 1: 0.25: 4.5.
From above analysis as can be known, sequence number 4 reagent preventive effect the bests in this test, isoproturon, 2 chloro-quinolinic acids, 2 first, 4 chlorine sodium effective ingredient consumption are desirable weeding combination with 9g+7g+6g/ mu, their ratio is 1: 0.78: 0.67.
Embodiment 3 (weed killer herbicide of the present invention and the live clean application effect comparative example that reaches Bentazon of the representative weed killer herbicide that uses at present):
This example adopts the weed killer herbicide of the present invention (calling careless young commander in chief in the following text) that contains effective composition 60%, and each composition weight percentage composition is:
Isoproturon 11%
2 chloro-quinolinic acids 40%
2 first, 4 chlorine sodium 9%
Detergent 2%
Dispersant 3%
The filler surplus
The present invention of above proportioning grass young commander in chief weed killer herbicide is tempered into pasty state by the amount of application of 40～80 gram/mus, add entry by every mu then and mix well for 40～50 kilograms, evenly spray with sprayer.On March 2 2002 sowing time, spraying time on March 17th, 2002, on April 7 2002 control time, comparing result such as table two, " 60% " are meant that above-mentioned three kinds of total active ingredient total contents are 78%.
Table two
| Handle | 78% careless young commander in chief | Live clean | 48% Bentazon | Not medication |
| Dose gram/mu | 80 grams | 40 grams | ????150ml | ????- |
| Average residual dogstail (strain) | ????0.89 | ????21.0 | ????28 | ????30 |
| Preventive effect % | ????97.03 | ????30.0 | ????6.67 | ????- |
| Average residual broad-leaved nutgrass flatsedge (strain) | ????0.7 | ????23.0 | ????2.9 | ????29 |
| Preventive effect % | ????97.59 | ????20.0 | ????90 |
From last table as seen, weed killer herbicide of the present invention " careless young commander in chief " preventive effect of rice field grass family and broad leaved weeds has been surpassed 95%, its herbicidal effect is better than live clean and Bentazon.
Claims (4)
1. rice field early metaphase foliar herbicide, it is characterized in that containing active ingredient isoproturon, 2 chloro-quinolinic acids and 2 first, 4 chlorine sodium, also contain auxiliary element dispersant, remover, all the other are filler, the weight ratio of three kinds of active ingredients is an isoproturon: 2 chloro-quinolinic acids: 2 first, 4 chlorine sodium=1: 0.2～100: 0.6～10, the content of dispersant and detergent be respectively three kinds of active ingredients total amount 1～8%, filler is an amount of.
2. rice field according to claim 1 early metaphase foliar herbicide is characterized in that the active ingredient isoproturon: 2 chloro-quinolinic acids: the ratio of 2 first, 4 chlorine sodium is 1: 0.4～4: 0.4～2,
3. according to the described rice field of claim 1 early metaphase foliar herbicide, it is characterized in that the active ingredient isoproturon: 2 chloro-quinolinic acids: the ratio of 2 first, 4 chlorine sodium is 1: 0.5～1: 0.5～1.
4. rice field early metaphase foliar herbicide according to claim 1 is in application no-tillage and the field weeding of interplanting direct seading rice, it is characterized in that tempering into pasty state by the amount of application of 40 grams～80 gram/mus, add entry by every mu then and stir evenly for 40～50 kilograms, evenly spray with sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113196 CN1389116A (en) | 2002-06-19 | 2002-06-19 | Rice field herbicide for early and middle stage application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113196 CN1389116A (en) | 2002-06-19 | 2002-06-19 | Rice field herbicide for early and middle stage application |
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| Publication Number | Publication Date |
|---|---|
| CN1389116A true CN1389116A (en) | 2003-01-08 |
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| CN 02113196 Pending CN1389116A (en) | 2002-06-19 | 2002-06-19 | Rice field herbicide for early and middle stage application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004826A (en) * | 2012-12-25 | 2013-04-03 | 阳玉欣 | Herbicide |
| CN104396985A (en) * | 2014-10-14 | 2015-03-11 | 广东中迅农科股份有限公司 | Sorghum field herbicide |
-
2002
- 2002-06-19 CN CN 02113196 patent/CN1389116A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004826A (en) * | 2012-12-25 | 2013-04-03 | 阳玉欣 | Herbicide |
| CN104396985A (en) * | 2014-10-14 | 2015-03-11 | 广东中迅农科股份有限公司 | Sorghum field herbicide |
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