CN109874577A - Wheatland Wintering Period chemical weed control method - Google Patents
Wheatland Wintering Period chemical weed control method Download PDFInfo
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- CN109874577A CN109874577A CN201910310885.8A CN201910310885A CN109874577A CN 109874577 A CN109874577 A CN 109874577A CN 201910310885 A CN201910310885 A CN 201910310885A CN 109874577 A CN109874577 A CN 109874577A
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Abstract
The invention discloses wheatland Wintering Period chemical weed control method, wheatland type selects 3 leaf of wheat more than the phase, and weeds emerge field substantially before the winter;Medication optimum period: wheat enters Wintering Period, can start medication after living through the primary local freezing in lower temperature 7 days winter or more throughout the year, before one into wheat until turn green;Specific low temperature formula prevents and kill off that optimum period is wide, and effect is good in Wintering Period Rational Application, at low cost, and it is small to eliminate risk, on wheat normal growth without influence.
Description
Technical field
The present invention relates to agricultural plantation technology fields, more specifically, it relates to wheatland Wintering Period chemical weed control method.
Background technique
Currently, mainly having gramineae weed and broad leaved weeds two major classes type along Huaihe River and Northern Area of Huaihe River wheat weeds.Grass
That weight is endangered in section weeds mainly has 4 kinds, i.e. amur foxtail, Alopecurus, hard grass, Wang grass etc.;Broad leaved weeds mainly have 4
Kind, i.e. clearvers, shepherd's purse, ox chickweed, herba stellariae mediae etc..In the grass phase of field, generation is mixed with field with broad leaved weeds with grass family
Area is larger.Chemical weed control is the main means that wheatland crop smothering is prevented and kill off, and wheatland eliminates chance low temperature, and preventive effect is poor, it is often more important that is held
It is also easy to produce phytotoxicity, therefore produces upper wheat paddock chemical weed control at present and is mainly eliminated before the winter with two periods of spring respectively,
Wherein large area is eliminated in spring, while forbidding carrying out chemical weed control in overwintering period.Before winter and spring chemical weed control is in case of connected
Continuous rainy weather will be unable to carry out, and often misses the optimum period prevented and kill off, especially spring and eliminates requirement and rest in front of wheat jointing
Medication is pressed for time, it is desirable that high, field grass age is bigger than normal, and growth potential is strong, and drug resistance increases, even if dosage uses herbicide, preventive effect with
It compared before winter and is also remarkably decreased.Spring easily meets the weather of " cold spell in later spring " simultaneously, eliminates and equally be easy to cause phytotoxicity.Therefore, spring
Wheatland chemical weed control cost is big, and herbicidal effect is unstable.
Summary of the invention
It is overwintering in view of the deficiencies of the prior art, the present invention intends to provide a kind of wheatland to solve the above problems
Phase chemical weed control method, explores the key problem in technology of hypothermic phase medication, in Wintering Period Rational Application, prevents and kill off that optimum period is wide, and effect is good,
It is at low cost, eliminate that risk is small, and phytotoxicity is light.
To achieve the above object, the present invention provides the following technical scheme that
Wheatland Wintering Period chemical weed control method,
Wheatland type: 3 leaf of wheat is more than the phase, and weeds in field all sprouts substantially at this time;
Medication optimum period: wheat enters Wintering Period, after living through the primary local freezing in lower temperature 7 days winter or more throughout the year
It starts medication, before one into wheat until turn green, the time is by the end of December to early Febuary.
The present invention is further improved, with medicine composition: preventing and kill off gramineae weed using mesosulfuron or pyroxsulam;Or
Mesosulfuron+isoproturon;Or clodinafop-propargyl+isoproturon;Or clodinafop-propargyl+mesosulfuron;Prevent and kill off the double fluorine sulphurs of broadleaf weeds application
Careless amine+tribenuron-methyl;Or florasulam+diflufenican wettable powder;Or florasulam+fluroxypyr.(through agriculture
Industry rural area portion formal registration formulation products)
Prevent and kill off broadleaf weeds application florasulam suspending agent+tribenuron-methyl wettable powder;Or florasulam suspending agent+pyrrole fluorine
Acyl grass amine wettable powder;Or florasulam suspending agent+fluroxypyr missible oil.
The key technology that Wintering Period is eliminated is: (1) more than the phase, weeds all sprout 3 leaf of wheat substantially, tie by using closing down
The formula of conjunction guarantees herbicidal effect.(2) after wheat application herbicide, tolerance decline, when meeting larger cooling when than application, meeting
There is drug injury problem.And wheat it is overwintering after live through the primary local freezing of winter lower temperature throughout the year after, the 5-7 days wheats in interval are
Winter low temperature weather, frost resistance are adapted to, drug resistance enhancing will not generate phytotoxicity, freeze injury.(3) gramineae weed use: first is prevented and kill off
Two sulphur of base is grand or pyroxsulam or isoproturon+mesosulfuron (or clodinafop-propargyl) or mesosulfuron+clodinafop-propargyl;It prevents and kill off wealthy
Leaf weeds are applied: florasulam+tribenuron-methyl (or diflufenican or fluroxypyr), and low temperature application is selected on drug
Effect good medicament and formula.
The present invention is further improved technical solution, and grass family is mixed with the mixed raw field application both the above formula of broadleaved herb
It sprays.Two kinds of formulas are mixed to be applied, and pharmacy effect is stablized.
The further improved technology scheme of the present invention, which is that hypsography low-lying ponding field not can be carried out, eliminates.Wheatland ponding
Resistance of Wheat To Adversity decline, while herbicide meets water drug effect and plays fast, easily generation phytotoxicity.
The invention has the advantages that:
1, it is wide to prevent and kill off optimum period, preferably carries out.It prevents and kill off work to win initiative, Wintering Period weeding, small, suitable insecticide spraying time is influenced by weather
Very long, long-term Wintering Period prevents and kill off optimum period 20 days or more more than spring;And winter slack labour is spacious and comfortable, the very development of suitable services.
2, preventive effect is stablized, at low cost.Weeds seedling is small, and drug resistance is poor, and dosage is few, at low cost.Wheat Wintering Period is applied
Medicine, wheat seeding do not seal row, field canopy density are small, and weeds are exposed, powder it is big, preventive effect is good.Identical Herbicidal composition and use
In the case of pharmaceutical quantities, Wintering Period medication improves 5-10% than spring medication preventive effect.
3, weeding active, high efficiency.Weeds are controlled ahead of time, are prevented weeds and wheat from fighting for nutrient, are formed conducive to wheat strong
Seedling improves yield.
4, it is small to eliminate risk, on wheat normal growth without influence.It is eliminated during Wintering Period low temperature, wheat experienced extremely low
Medication after warm forging refining, drug resistance is strong, and safety is good.It is long away from succession crop safety interval simultaneously, to lower stubble also crop safety.
Specific embodiment
Wheat stops growing substantially when the overwintering period temperature of wheat is lower than 3 DEG C, but temperature gos up and can still give birth to 3 DEG C or more
Root comes into leaves and tiller.And 1 DEG C of wheatland majority weeds or more can still grow, and can absorb herbicide.
Wheatland is chosen in Jiangsu Province Huai'an and is tested within applicant -2019 years 2017, carry out chemical control for science and mention
For foundation.It is required that wheatland type: 3 leaf of wheat is more than the phase, the field that weeds emerge substantially before the winter, it is desirable that cannot be that hypsography low-lying has
Ponding field.
Now result is summarized as follows:
One, 2017-2018 wheatland Wintering Period weeds chemical control is tested
(1) gramineae weed test: place, Huaiyin District fourth market town labour village is prevented and kill off.Wheat breed is Huaihe River wheat 33.Field is main
For gramineae weeds such as amur foxtail, hard grass.
, test method: before wheat is overwintering, Wintering Period, period of seedling establishment carried out 3 applications test, administration time point
Not are as follows: (1) winter before, on November 26th, 2017, the weeds 2-3 leaf phase;(2) Wintering Period, on December 24th, 2017,3 leaf phase of weeds;
(3) period of seedling establishment, on March 13rd, 2018, weeds 4-6 leaf phase.
Test sets 6 processing altogether, separately sets and is not administered blank control;3 application test dose designs are identical, amount at 7
Reason, 4 repetitions, totally 84 cells, 20 ㎡ of plot area (4m × 5m), random district's groups arrange.By 30 kilograms of the amount of being watered per acre, hand
It is dynamic spraying.
Wherein Wintering Period is administered weather condition: application on December 24th, 2017, and wheat is in Wintering Period, and daily temperature is worked as in application
For 3.5-9.8 degree.Preceding 7 days (December 17) temperature of application is-6.4-4.4 degree, the 2nd day after application (December 25) temperature for-
3.9-9.2 degree.Late December be averaged ten days temperature be 3.2 degree.
, the investigation date: security survey, irregular follow-up investigation after medicine, investigation Plant Height in Wheat, leaf color, number of blade etc. have
Without symptom of chemical damage, symptom of chemical damage, grade, the safety with clear test medicine to wheat are recorded in detail if having.Herbicidal effect
Investigation, investigation aerial part fresh grass weight preventive effect when herbicidal effect on April 2 is stablized.
, reagent combination and effect
Table 1:2017-2018 wheatland different times are eliminated to the final fresh weight effect table of gramineae weed
4, the result shows that:
4.1 ,+15% Clodinafop-propargyl microemulsion of 50% isoproturon wettable powder ,+30 grams per liter methyl two of 50% isoproturon wettable powder
3 processing of oil-suspending agent, 3 period medication herbicidal effects can be dispersed in the grand dispersible oil-suspending agent of sulphur, 30 grams per liter mesosulfurons
Preferably, before Wintering Period medication effect and winter, spring medication no significant difference.
4.2,50% isoproturon wettable powder, 15% clodinafop-propargyl, 69g/L fenoxapropPethyl Wintering Period using effect are worse than
Spring.
4.3, the herbicide of test is applied alone effect ratio processing herbicidal effect mixed with 50% isoproturon wettable powder poor.
4.4, safe, no phytotoxicity is respectively handled.Wherein ,+30 grams per liter mesosulfuron of 50% isoproturon wettable powder can
Disperse oil-suspending agent processing, wheat is slightly downgraded, and wheat restores normal after turning green.
(2), wheatland broad leaved weeds are prevented and kill off and eliminate test
1, place: the village Gu Xi, the Huaiyin District township Gu Zhai.Wheat breed is Huaihe River wheat 20.
Field is mainly clearvers, shepherd's purse, herba stellariae mediae.
, test period, method be same as above.
, reagent combination and result: table 2 the result shows that, three main body herbicide formulations are currently produced, respectively 3 periods
Medication is safe to wheat.It is efficient that 3 periods eliminate effect, indifference.
Table 2:2017-2018 wheatland different times are eliminated to the final fresh weight effect table of broadleaf weeds
Two, 2018-2019 wheat Wintering Period eliminates demonstration
(1), Wintering Period plant protection unmanned aerial vehicle eliminates demonstration
1, basic condition: place is the Huaiyin District three-tree town village Qu Bei, and wheat breed is Huaihe River wheat 35, and field is mainly the standing grain such as amur foxtail
Undergraduate course weeds.
, demonstration methods: sprayed using big boundary H16T plant protection unmanned aerial vehicle, medicament is watered 1 kilogram and sprays per acre
3, exemplary formulations and result
3.1, spraying time and weather condition: application on December 23rd, 2018, weeds be in 4-5 leaf phase, the application same day when application
There are frost in temperature 0-9 degree, morning.(December 27) temperature is minimum the 4th day after application is down to -6 degree.Before application 10 days, wheat warp
Wintering Period cold acclimation is gone through, on December -13 on the 10th, temperature is minimum to be down to -8 degree.
Herbicidal effect and safety
From table 3 it can be seen that oil-suspending agent, 4% pyroxsulam can be dispersed in+30 grams per liter mesosulfuron of 15% Clodinafop-propargyl microemulsion
2 processing of dispersible oil-suspending agent, efficient to wheatland amur foxtail, herbicidal effect is micro- up to 95.4%, 96.3%, 15% clodinafop-propargyl respectively
Emulsion Wintering Period using effect is poor, and preventive effect only has 37.5%.
Table 3:2018-2019 Wintering Period eliminates demonstration result
(2), the artificial power spraye of Wintering Period, which sprays, eliminates demonstration
1, basic condition: place is Huaiyin District fourth market town labour village, and wheat breed is Huaihe River wheat 33, and field is mainly gramineae weed
Wang grass.
, demonstration methods: sprayed using artificial power spraye (WS -16D), medicament is watered 16 kilograms and sprays per acre
3, exemplary formulations and result
3.1, spraying time and temperature situation: respectively at the laxative and on January 15th, 2,019 2 times in 24 days December in 2018 of Wintering Period
Laxative.
Weeds careless age was 4 leaf phases when application on December 24,.Laxative works as daily temperature 1-9 degree, and have frost in the morning, the after application
3 days (December 27) temperature it is minimum be down to -6 degree.Before application 10 days, wheat experienced Wintering Period cold acclimation, 10 days -13 December
Day, temperature is minimum to be down to -8 degree.Weeds grass age is the 5-6 leaf phase when application on January 15th, 2019.Laxative same day weather eyeball, temperature
For -4-5 degree.
Herbicidal effect and safety
From table 4, it can be seen that 4 processing, 2 period medications of setting, to wheat, safety is without phytotoxicity, to Mai Tian Wang grass effect
It is good, up to 90% or more.
Table 4:2018-2019 Wintering Period eliminates demonstration result
(3), the artificial power spraye of Wintering Period, which sprays, eliminates demonstration
1, basic condition: the Huaiyin District town the Liu Laozhuan village Gu Xi.Wheat breed is Henan wheat 158, and field is mainly that shepherd's purse, herba stellariae mediae etc. are wealthy
Leaf class weeds, there is a small amount of gramineae weed.
, demonstration methods: sprayed using artificial power spraye (WS -16D), medicament is watered 16 kilograms and sprays per acre
3, exemplary formulations and result
Application on January 28th, 2019 medicine, 2.6 mu of spraying area.Weeds were in for 4 leaf phases.The application same day is cloudy, temperature 1-9 degree, and 29
Daily temperature is -2-8 degree.
Reagent combination is that 20 gram of+15% Clodinafop-propargyl microemulsion 30 of oil-suspending agent can be dispersed with 30 grams per liter mesosulfurons per acre
Gram 10 gram of+10% tribenuron-methyl wettable powder 20g of+50 grams per liter florasulam suspending agent, mu are watered 15 kilograms and spray.After medicine not
Routine observation, to wheat without phytotoxicity.Investigation on April 5th, 2019, to weeds fresh weight preventive effect up to 98.5%.
Three, conclusion
By nearly 2 years experiment and demonstrations the result shows that, wheat Wintering Period carry out chemical weed control be it is feasible, wheat experience it is overwintering low
After warm forging refining, application herbicide is safe.The effect for selecting the chemical control weeds satisfied the need is eliminated not less than before the winter with spring
Effect, but it is obviously wide in range to prevent and kill off optimum period, preferably carries out.
Claims (4)
1. wheatland Wintering Period chemical weed control method, it is characterised in that:
Wheatland type: 3 leaf of wheat is more than the phase, and weeds in field all sprouts substantially at this time;
Medication optimum period: wheat enters Wintering Period, after living through the primary local freezing in lower temperature 7 days winter or more throughout the year
It starts medication, before one into wheat until turn green, the time is by the end of December to early Febuary.
2. wheatland Wintering Period chemical weed control method according to claim 1, it is characterised in that:
With medicine composition: preventing and kill off gramineae weed using mesosulfuron or pyroxsulam;Or mesosulfuron+isoproturon;Or alkynes
Careless ester+isoproturon;Or clodinafop-propargyl+mesosulfuron;
Prevent and kill off broadleaf weeds application florasulam+tribenuron-methyl;Or florasulam+diflufenican wettable powder;Or it is double
Penoxsulam+fluroxypyr.
3. wheatland Wintering Period chemical weed control method according to claim 2, it is characterised in that: grass family and the mixed life of broadleaved herb
The mixing of field application both the above formula sprays.
4. wheatland Wintering Period chemical weed control method according to claim 1, it is characterised in that: hypsography low-lying ponding field
It not can be carried out and eliminate.
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CN110235663A (en) * | 2019-07-05 | 2019-09-17 | 南京农业大学 | The chemical control technology and its application of one group of winter wheat field Carolina Cranesbill Herb |
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Application publication date: 20190614 |