CN105660259A - Method for preventing and treating aegilops tauschii cosson serving as distress weeds in wheat field - Google Patents
Method for preventing and treating aegilops tauschii cosson serving as distress weeds in wheat field Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- 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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
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- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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Abstract
The invention belongs to the field of prevention and treatment of weeds, and discloses a method for preventing and treating aegilops tauschii cosson serving as distress weeds in a wheat field. The method comprises the following steps: atomizing soil with flufenacet using a deep tillage technology, andatomizing stems and leaves with mesosulfuron, wherein at the first year of using the deep tillage technology and the chemical herbicides, the aegilops tauschii cosson can be well controlled; after continuous use for 2 years, harm caused by the aegilops tauschii cosson can be basically controlled completely; after the third year, the aegilops tauschii cosson can be prevented and treated with or without herbicides; therefore, the harm caused by the aegilops tauschii cosson in the wheat field can be effectively controlled, and the use amount of the herbicides is reduced. Compared with a common herbicide for preventing and treating weeds, the method disclosed by the invention has the advantages of good prevention and treatment effect and relatively small use of the herbicide.
Description
Technical field
The invention belongs to control of weeds field, more particularly, it relates to a kind of method preventing and treating wheatland malignant weed Triticum tauschii.
Background technology
Semen Tritici aestivi is one of China's staple food crop, its cultivated area and total output are only second to Oryza sativa L., whole nation cultivated area reaches more than 3,000 ten thousand hectares, about 4.5 hundred million mu, account for the 22% ~ 30% of whole nation cultivated area, be about the 20% ~ 27% of cereal crops sown area, Semen Tritici aestivi total output about 100,000,000 tons, reach the 22%(Wu Ming honor etc. of total output of grain, 2013, pesticide). Being the main commodity food of China and strategic reserves grain kind, have critical role in grain-production, circulation and consumption, development Wheat Production is significant to Chinese national economy development and people's lives. Triticum tauschii is wheatland malignant weed, it is a lot of countries and regions quarantine objects, the similar genetic background of Triticum tauschii and Semen Tritici aestivi, habit is with Semen Tritici aestivi closely, can with resources such as Semen Tritici aestivi keen competition light, fertilizer, water, cause wheat yield even to have no harvest, and produce the ripe effective control measures of upper shortage. After results, having the wheat kernels that Triticum tauschii small ear mixes, Triticum tauschii is difficult to remove, and makes the quality of Semen Tritici aestivi decline with quality, and commodity economy is worth rapid drawdown, has a strong impact on economic trade. Triticum tauschii is mingled in wheat kernels, can with wheat seed long-distance communications, and in Winter Wheat in China main producing region, harm increases the weight of rapidly at present, becomes wheatland malignant weed. Triticum tauschii or the overwintering host of some pest and disease damages, cause great threat to the Wheat Production of China. It is reported, 2003-2004 Southern Hebei Triticum tauschii Semen Tritici aestivi of causing harm causes damage and reaches 10%-25%.
This seminar is according to the growth characteristics of Triticum tauschii and many experimental results, it is proposed that a kind of methods of cultivation controlling wheatland malignant weed Triticum tauschii, has declared Chinese patent, and application number is 201510064204.6. Patent 201510064204.6 has good prevention effect, and does not use chemical herbicide, is conducive to grain security, food safety, bio-safety, ecological environmental protection and sustainable development. But the time cycle that patent 201510064204.6 prevents and treats Triticum tauschii is long, it is necessary to circulation at least three years; Prevention effect also needs to improve.
Flufenacet, No. CAS is 142459-58-3, and English name is Flufenacet, and molecular formula is C14H13F4N3O2S, and molecular weight is 363.33.Flufenacet is the herbicide kind introduced in Britain's Brighton plant protection meeting by Bayer Cropscience Co., Ltd's discovery, nineteen ninety-five. This active component is the same with mefenacet belongs to aryloxyl acetamide type compound together, has similar control of weeds spectrum with chloro-acetyl amine herbicide, it is possible to extensively prevent and kill off annual gramineous weed, dried tuber and some granule broad leaved weeds. Flufenacet action character is: by suppressing cell division to play a role, be mainly used in soil treatment, and before bud, after bud, early stage all can use. Flufenacet can be widely used for many crop fields, such as Semen Maydis, Semen Tritici aestivi, Fructus Hordei Vulgaris, Soybean and Other Crops field, before crop Seedling or after Seedling, early stage uses, can well prevent and kill off annual gramineous weed such as amur foxtail, Itanlian rye, Herba Digitariae, barnyard grass, Herba Setariae Viridis and some granule broad leaved weed such as descurainia sophia (l.) webb ex prantl, Herba Capsellae, Amaranthus retroflexus, Herba Portulacae etc. Our result of the test shows, flufenacet is anti-to wheatland difficulty, malignant weed Triticum tauschii also has control action in various degree. Flufenacet is the outstanding compatibility of broadleaf weed herbicide, and the diflufenican flufenacet flurtamone suspending agent such as 360g/L is Bayer Bitterfeld GmbH crop science Products, it is recommended that dosage intermediate value is 378g/hm2Zhu Xiu etc. study proof,: wheat paddock association Weed Galium tricorne and malignant weed Herba veronicae are had good preventive effect by the diflufenican flufenacet flurtamone suspending agent of 360g/L, gradually step up (in Changjiang University's journal (natural science edition) in October, 2014 agronomy publication appearing once every ten days the 11st volume the 29th phase) along with dose increases preventive effect. It addition, use herbicide, soil remains herbicide the poisoning phenomenon of succession crop is happened occasionally, also can produce a series of environmental problem and harm food safety; This herbicide recommended dose growth safety (Wei Jinghuai etc., publication appearing once every ten days the 11st volume the 23rd phase in Changjiang University's journal (natural science edition) in August, 2014 agronomy) to winter wheat field succession crop Cotton Gossypii, Semen arachidis hypogaeae etc.
Mesosulfuron is by the discovery in 1996 of Hirst company, now by the sulfonylurea herbicide of Bayer Cropscience Co., Ltd's production and selling. 30 g/l of mesosulfurons are had to dispersible oil-suspending agent (generation agate) and 3.6% 2 sulphur metsulfuron-methyl water dispersible granules (wealthy generation agate) two kinds at the related preparations of China's registration at present. Mesosulfuron is branched-amino acid enzyme [acetolactate synthestase (ALS) or Acetohydroxyacid synthase (AHAS)] inhibitor. It, by suppressing the biosynthesis of amino acid valine and isoleucine necessary to plant, stops cell division and plant growing. Safener mefenpyrdiethyl can strengthen mesosulfuron metabolism in cereal crops (rather than target weeds), is therefore commonly incorporated into mefenpyrdiethyl in its formulation products. Mesosulfuron is systemic herbicide, absorbs mainly through the stem and leaf of plant, conducts through phloem and xylem, passes through soil absorption on a small quantity, it is suppressed that cell division, causes that sensitive plant is dead. Generally, after dispenser 2～4 hours, the absorbtivity of susceptible weeds peaks, and stops growing after 2 days, and within 4～7 days, rear blade starts yellow, occurs withered speckle subsequently, dead after 2～4 weeks. Use suitable in soft and semi-rigid type winter wheat variety. Amur foxtail, wild oat, caput grass, annual bluegrass, hard grass, alkali thatch, Itanlian rye, lolium temulentum, Herba bromi japonici, wax candle grass, Triticum tauschii, Radix Aneurolepidii, Herba Capsellae, descurainia sophia (l.) webb ex prantl, cattle Herba stellariae mediae, spontaneous Brassica campestris L etc. can be prevented and kill off. Dosage is 9 ~ 15.7g/hm2.Resting in Semen Tritici aestivi 3～6 leaf phase, grassy weed substantially all sprouts, is in dispenser early during 3～5 leaf phase, and 30 g/l of mesosulfurons of general every mu of use dispersible oil-suspending agent 20 ~ 25 milliliters can play desirable preventive effect; Field grass is with the stronger weeds of the resistance such as grass, Triticum tauschii, Herba bromi japonici for time main, and dosage can suitably increase to 25～35 milliliters every mu. Adopting nebulization dispenser, every mu of water consumption ensures more than 30 kilograms. Pesticide application technology is required higher by mesosulfuron, and this medicine uses improper easy generation poisoning at wheat paddock, should strictly uniformly spray by the application dosage recommended, period and method, can not excess, Use overrun, do not respray, drain spray. Being likely to result in wheat seedling vitality and decline meeting waterlogging, arid, disease, basic soil etc., grow and can not use under downtrod adverse environment, can not occur significantly cooling weather after medicine, otherwise Semen Tritici aestivi there will be the phenomenons such as dwarfing, chlorisis. If meet overcast and rainy field overly moist, low-lying hydrops or wheat seedling by damage or crop failure caused by waterlogging, freeze injury, perniciousness harm, disease pest harm and plant nutrition bad time also can not medication, Semen Tritici aestivi jointing or plant height can not use after reaching 13 centimetres, otherwise easily produce poisoning. Heavy rain, frost is had easily to produce poisoning after dispenser in 4 days. During dispenser, can not there be hydrops in field, before and after dispenser in 2 days can not broad irrigation, in order to avoid poisoning occurs. So producing upper best dispenser before the winter, in Wintering Period and spring wheat period of seedling establishment dispenser, easily meeting adverse weather after medicine, poisoning risk is bigger. Semen Tritici aestivi jointing or plant height are forbidden after reaching 13 centimetres to use. The crops such as rear stubble Semen Maydis, Oryza sativa L., Semen sojae atricolor, Semen arachidis hypogaeae, Cotton Gossypii need to sowing after dispenser 100 days, the wheatland of the above-mentioned crop of intercropping and interplanting is cautious use of this medicine. Water proposes clearly, controls mesosulfuron consumption and is conducive to anti-poisoning (agricultural applicating technology, 2012.2). Li Mei proposes, and mesosulfuron (generation agate) every mu of amount of application is crossed party more than 40 milliliters or dispenser and caused Wheat Yellow chemical medicine evil (agricultural applicating technology, 2013.7). Use mesosulfuron to need strict control dosage and use age, otherwise can produce poisoning. A large amount of screening tests that our seminar's early stage carries out prove, mesosulfuron is that Triticum tauschii is had the stem and leaf of control effect to process herbicide by the only one used in producing at present.
Summary of the invention
The technical problem to be solved in the present invention is to provide the method for low, the effective preventing and treating wheatland malignant weed Triticum tauschii of a kind of instant effect, cost. Can controlling Triticum tauschii effect then more than 90%, Second Year can control Triticum tauschii harm completely, can reach basic without herbicide later, and Sustainable Control Triticum tauschii endangers.
In order to solve above-mentioned technical problem, the technical scheme is that
A kind of method preventing and treating wheatland malignant weed Triticum tauschii, comprises the following steps:
(1) First Year is before wheat cultivation, and tillage method selection is ploughed deeply cultivated, and ploughed depth is 30cm; Carrying out soil spraying process with 41% flufenacet suspending agent before emerging after wheat cultivation, consumption is per hectare effective ingredient 300-400g; Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and consumption is per hectare effective ingredient 9-15.7g;
(2) Second Year is before wheat cultivation, and tillage method selection is ploughed deeply cultivated, and ploughed depth is 20cm; Carrying out soil spraying process with 41% flufenacet suspending agent before emerging after wheat cultivation, consumption is per hectare effective ingredient 300-400g;Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and consumption is per hectare effective ingredient 9-15.7g;
Within (3) the 3rd years, before wheat cultivation, tillage method selection is ploughed deeply cultivated, and ploughed depth is 30cm;
(4) the later time selects according to step (1), (2), (3) preventing and treating according to Triticum tauschii economic threshold for control or does not prevent and treat.
Preferably, a kind of above-mentioned method preventing and treating wheatland malignant weed Triticum tauschii, step (2) uses the one of which herbicide in flufenacet or mesosulfuron.
Preferably, a kind of aforementioned method preventing and treating wheatland malignant weed Triticum tauschii,
In step (1), flufenacet consumption is per hectare effective ingredient 300g; Mesosulfuron consumption is per hectare effective ingredient 12g.
In step (2), flufenacet consumption is per hectare effective ingredient 300g; Mesosulfuron consumption is per hectare effective ingredient 12g.
The invention has the beneficial effects as follows:
1, by ploughing deeply circulation and selecting to use chemical herbicide, it is possible to the generation of effective prevention and control wheatland malignant weed Triticum tauschii and harm. Can controlling Triticum tauschii effect then more than 90%, Second Year can control Triticum tauschii harm completely, can reach basic without herbicide later, and Sustainable Control Triticum tauschii endangers.
2, the 3rd year and do not use herbicide, compare with using chemical herbicide every year later, use chemical weed control dosage and number of times to reduce, be conducive to environmental conservation, reduce and later stage crop is endangered, reduce chemical residual.
3, not only circulate the preventing and treating phase of 3 years, remain good effect, and after preventing and treating in 3 years, keep good effect.
4, the present invention is except can playing good control action to Triticum tauschii, and other weeds of wheatland also can be played very good control effect.
Detailed description of the invention
A kind of method preventing and treating wheatland malignant weed Triticum tauschii disclosed by the invention, those skilled in the art can use for reference present disclosure, suitably changes or improves realization. Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the art, they are considered as including within the present invention. The invention discloses preferred embodiment, method described herein and application substantially can be modified or suitably change and combination by related personnel in without departing from present invention, spirit and scope, realize and apply the technology of the present invention.
The present embodiment one, two, three is to test on farm, Jinan academy of agricultural sciences, implements four and carries out testing, demonstrating in the serious land for growing field crops of Shandong Dezhou City Triticum tauschii harm. Being experimental field Huang-Huai-Hai typical case wheat district pilot region, the art of this patent can be generalized to winter wheat field, whole Huang-Huai-Hai region, can improve according to the art of this patent and implement on the south the Qinhuaihe River.
Embodiment one
Conventional shallow rotation, plough deeply 30cm, do not use, be used alone or in combination flufenacet and mesosulfuron processes test.
Selecting the uniform plot of fertility, Triticum tauschii seed is uniformly spread fertilizer over the fields on ground, the conventional shallow rotation of split plot design, ploughs deeply the different disposal such as 30cm, and every district is according to following process:
Process 1, conventional shallow rotation, do not use herbicide;
Process 2, conventional shallow rotation, carry out soil spraying process with 41% flufenacet suspending agent before emerging after wheat cultivation, consumption is the middle amount that per hectare effective ingredient 350g(registration makes consumption);
Process 3, conventional shallow rotation, Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and consumption is the middle amount that per hectare effective ingredient 12g(registration makes consumption);
Process 4, conventional shallow rotation, process 2 and be used in combination with processing 3;
Process 5, plough deeply 30cm, do not use herbicide;
Processing 6, plough deeply 30cm, with 41% flufenacet suspending agent carry out soil spraying process before emerging after wheat cultivation, consumption is the middle amount that per hectare effective ingredient 350g(registration makes consumption);
Processing 7, plough deeply 30cm, Triticum tauschii 2-5 leaf phase stem and leaf and use 30g/L mesosulfuron to dispersible the process of oil-suspending agent even spraying, consumption is the middle amount that per hectare effective ingredient 12g(registration makes consumption);
Process 8, plough deeply 30cm, process 5 and be used in combination with processing 7.
Semen Tritici aestivi period of seedling establishment experimental investigation result is in Table 1.
The impact (First Year) on Triticum tauschii generating capacity of table 1 different disposal
Result of the test shows, the conventional shallow rotation not dispenser of wheat paddock processes, and spreads fertilizer over the fields the Triticum tauschii seed on ground and all can sprout, grow vigorous, and every square metre of average stem number reaches 286.5, with it for comparison, conventional shallow rotation soil treatment uses flufenacet (processing 2) Triticum tauschii preventive effect to be 52.8%; Conventional shallow rotation, when stem and leaf processes, mesosulfuron (processing 3) Triticum tauschii preventive effect is 73.5%; When conventional shallow rotation soil treatment uses flufenacet and stem and leaf to process, mesosulfuron (processing 4) Triticum tauschii preventive effect is up to 86.9%. These process still remaining more Triticum tauschii, and remaining Triticum tauschii falls to the ground after bearing seeds, and Second Year still can sprout harm, and Semen Tritici aestivi is caused greater loss.
Above-mentioned result of the test, it is also shown that adopt deep tillage machinery before wheat cultivation, arranges and ploughs deeply degree of depth 30cm, and herbicide spraying (processing 5) effect is not better, and compared with processing with the shallow rotary tillage of routine, Triticum tauschii preventive effect reaches 80.6%; Adding and spray after Wheat Sowing soil processing herbicide flufenacet (processing 6) before Seedling, preventive effect reaches 86.4%; Ploughing deeply degree of depth 30cm, when stem and leaf processes, mesosulfuron (processing 7) Triticum tauschii preventive effect is 89.8%; Ploughing deeply degree of depth 30cm, when soil treatment uses flufenacet and stem and leaf to process, mesosulfuron (processing 8) Triticum tauschii preventive effect is the highest, up to 95.3%. As can be seen here, plough deeply degree of depth 30cm, drop with the use of flufenacet and mesosulfuron, Triticum tauschii control effect is best, it is possible to reach the ideal effect of prevention and control Triticum tauschii. For ensureing herbicidal effect, it is proposed that production adopts plough deeply, flufenacet and mesosulfuron are used in combination.
Embodiment two
Plough deeply 30cm, flufenacet is used in combination and mesosulfuron processes test.
Selecting the uniform plot of fertility, Triticum tauschii seed is spread on ground, ploughs deeply 30cm, subregion, and every district is according to following process:
Soil spraying process is carried out with 41% flufenacet suspending agent before emerging after wheat cultivation, and, Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and using dosage is as follows:
Process 1, flufenacet 300g, mesosulfuron 9g; Process 2, flufenacet 300g, mesosulfuron 12g; Process 3, flufenacet 300g, mesosulfuron 15.7g; Process 4, flufenacet 350g, mesosulfuron 9g; Process 5, flufenacet 350g, mesosulfuron 12g; Process 6, flufenacet 350g, mesosulfuron 15.7g; Process 7, flufenacet 400g, mesosulfuron 9g; Process 8, flufenacet 400g, mesosulfuron 12g; Process 9, flufenacet 400g, mesosulfuron 15.7g;
Process 10, conventional shallow rotation, not spraying herbicide comparison.
Result of the test is in Table 2.
Table 2 is ploughed deeply and is added the use herbicide various dose impact (First Year) on Triticum tauschii generating capacity
Result of the test shows, the basic, normal, high figure place at registration dosage is used in combination two kinds of herbicides, all can well suppress the generation of Triticum tauschii, and preventive effect is all more than 90%.But each process between the preventive effect of Triticum tauschii is affected not quite by the height of flufenacet amount, but be subject to mesosulfuron amount number affect bigger. Make the increase of consumption with mesosulfuron, Triticum tauschii preventive effect increases, mesosulfuron 9g/hm2Processing (process 1, process 4, process 7) preventive effect to Triticum tauschii between 90.7% ~ 91.7%, difference is not notable; Mesosulfuron 12g/hm2Process (process 2, process 5, process 8) preventive effect to Triticum tauschii between 94.8% ~ 95.6%; Mesosulfuron 15.7g/hm2Process (process 3, process 6, process 9) preventive effect to Triticum tauschii between 96.2% ~ 97.1%. But, mesosulfuron 15.7g/hm2Process after (process 3, process 6, process 9) process, it was observed that wheat leaf blade aetiolation, initial stage of turning green investigation time, remain to find out that wheat plant is slightly short and process in other, later stage Semen Tritici aestivi enters fast-growth after date, and difference fades away.
Therefore, it is suggested that in practice use flufenacet registration dosage low amounts, mesosulfuron can use registration dosage in-high dose, for avoiding herbicide damage, select mesosulfuron registration dosage middle amount Triticum tauschii can be played good control action.
Embodiment three
On the basis of embodiment one, ploughing deeply the degree of depth and change 20cm into, all the other process with embodiment one, proceed Second Year test.
Semen Tritici aestivi period of seedling establishment experimental investigation result is in Table 3.
The impact (Second Year) on Triticum tauschii generating capacity of table 3 different disposal
By experimental investigation result it can be seen that wheat paddock continues conventional shallow rotary tillage, and not carrying out preventing and kill off (processing 1), Triticum tauschii radix increases, and harm substantially increases the weight of, First Year 286.5 stems/m2, to Second Year up to 588.5 stems/m2, Semen Tritici aestivi is caused great production loss. Use mesosulfuron (or/and flufenacet associating) (process 2-and process 4) that Triticum tauschii can play control action in various degree in conventional shallow rotary tillage plot, but it is poor to control Triticum tauschii effect, the Triticum tauschii plant retained last year, fall to the ground after bearing seeds, second can sprout harm every year, still remaining greater number of Triticum tauschii plant (71.5 ~ 189.5 strain) after dispenser in the current year, and remaining Triticum tauschii plant quantity is higher than First Year, endangers into and increases the weight of trend.
Above-mentioned process 5 ~ process 8 is ploughed deeply for Semen Tritici aestivi and is added or be not added with herbicide treatment, it can be seen that Triticum tauschii harm is relatively light, and remaining Triticum tauschii plant quantity is considerably less than First Year, it is contemplated that can alleviate year by year. To Triticum tauschii preventive effect it is preferred that plough deeply methylate two sulphur grand+flufenacet process, Triticum tauschii is served complete control action, preventive effect is up to 100%.
Embodiment four
On the basis of embodiment two, 30cm is ploughed deeply in employing in the 3rd year, and all the other process with embodiment two, proceeds Second Year test.
Result of the test is in Table 4.
Table 4 is ploughed deeply and is added the use herbicide various dose impact (the 3rd year) on Triticum tauschii generating capacity
Result of the test shows, within the 3rd year, ploughs deeply 30cm, adds and sprays flufenacet+mesosulfuron various dose process, and the control action of Triticum tauschii is all very good, only mesosulfuron 9g/hm2Processing (process 1, process 4, process 7) and still have a small amount of Triticum tauschii plant, but preventive effect is also up to more than 98.4%, Triticum tauschii almost can be controlled by all the other process completely, and preventive effect is all more than 99.9%. In this test, plough deeply+chemicals treatment due to First Year preventive effect good, the generation absolute quantity of Triticum tauschii is not high, is used alone and is used in combination the generation that all can reduce Triticum tauschii, can be used alone a kind of herbicide or does not use, to reduce cost in practice.
Embodiment five
Land for growing field crops practical observation.
In the Jiao Miao town, Dezhou City Shandong Province with Huang-Huai-Hai wheat district typical feature, Triticum tauschii is selected to occur heavier and uniform plot occurs, in October, 2012 ~ 2015 year June, continuous 3 wheat growing season, take following measures to carry out contrast test:
Triticum tauschii generating capacity is affected EXPERIMENTAL DESIGN by table 5 different tillage and continuous 3 years of combinations of herbicides mode
Note: in table, 41% flufenacet suspending agent is that after Wheat Sowing, before Seedling, soil spraying processes, and consumption is per hectare effective ingredient 300g; 30g/L mesosulfuron dispersibles oil-suspending agent in wheat cultivation dispenser in about 15 days November then, now Triticum tauschii all sprouts substantially, 2-5 leaf phase (now Huang-Huai-Hai wheat district Semen Tritici aestivi is in tillering stage) stem and leaf even spraying processes, and consumption is per hectare effective ingredient 12g.
Field experiment is in Semen Tritici aestivi period of seedling establishment, and survey result is table 6 such as.
Triticum tauschii generating capacity is affected result by table 6 different tillage and continuous 3 years of combinations of herbicides mode
By experimental investigation result it can be seen that the lasting conventional shallow rotary tillage Triticum tauschii harm of wheat paddock increases the weight of year by year, First Year 189.5 stems/m2, to the 3rd year up to 669.0 stems/m2, Semen Tritici aestivi is caused great production loss. Use mesosulfuron (or and flufenacet associating) that Triticum tauschii can play control action in various degree in conventional shallow rotary tillage plot, but Triticum tauschii harm can not be controlled completely, all can retain a number of Triticum tauschii plant every year, remaining Triticum tauschii falls to the ground after bearing seeds, Second Year still can sprout harm, Semen Tritici aestivi is continued to cause harm, herbicide all must be used every year to be controlled, and through often to causing Wheat Yellow chemical medicine evil after medication.
Above-mentioned process 4, processing 5 and plough deeply for Semen Tritici aestivi and to add or to be not added with herbicide treatment, by continuous 3 years experimental investigation results it can be seen that within 3 years, plough deeply continuously (30cm 20cm 30cm), Triticum tauschii endangers and alleviates gradually, but still has a small amount of harm. Plough deeply methylate two sulphur grand+flufenacet process, then namely the preventive effect of Triticum tauschii is reached more than 96.0%, Second Year continues to apply, and namely Triticum tauschii preventive effect reaches 100%, within the 3rd year, can completely dispense with herbicide.
Claims (4)
1. the method preventing and treating wheatland malignant weed Triticum tauschii, it is characterised in that comprise the following steps:
(1) First Year is before wheat cultivation, and tillage method selection is ploughed deeply cultivated, and ploughed depth is 30cm; Carrying out soil spraying process with 41% flufenacet suspending agent before emerging after wheat cultivation, consumption is per hectare effective ingredient 300-400g; Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and consumption is per hectare effective ingredient 9-15.7g;
(2) Second Year is before wheat cultivation, and tillage method selection is ploughed deeply cultivated, and ploughed depth is 20cm; Carrying out soil spraying process with 41% flufenacet suspending agent before emerging after wheat cultivation, consumption is per hectare effective ingredient 300-400g; Triticum tauschii 2-5 leaf phase stem and leaf uses 30g/L mesosulfuron to dispersible oil-suspending agent even spraying and processes, and consumption is per hectare effective ingredient 9-15.7g;
Within (3) the 3rd years, before wheat cultivation, tillage method selection is ploughed deeply cultivated, and ploughed depth is 30cm;
(4) the later time selects according to step (1), (2), (3) preventing and treating according to Triticum tauschii economic threshold for control or does not prevent and treat.
2. a kind of method preventing and treating wheatland malignant weed Triticum tauschii according to claim 1, it is characterised in that: step (2) uses a kind of herbicide of flufenacet or mesosulfuron.
3. a kind of method preventing and treating wheatland malignant weed Triticum tauschii according to claim 1, it is characterised in that: in step (1), flufenacet consumption is per hectare effective ingredient 300g; Mesosulfuron consumption is per hectare effective ingredient 12g.
4. a kind of method preventing and treating wheatland malignant weed Triticum tauschii according to claim 1, it is characterised in that: in step (2), flufenacet consumption is per hectare effective ingredient 300g; Mesosulfuron consumption is per hectare effective ingredient 12g.
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