20 results about "Grass weed" patented technology

The present application belongs to the field of pesticides, and particularly relates to a herbicidal composition containing a fused ring substituted aromatic compound and application thereof. The composition comprises a herbicidally effective amount of active ingredient A and active ingredient B, wherein the active ingredient A is or a salt / ester thereof; the active ingredient B is selected from one or more of the following compounds and salts / esters thereof: glyphosate, glufosinate-ammonium, glufosinate-P, paraquat, diquat, ACCase inhibitors, PPO inhibitors, etc. The composition can effectively control / eliminate grass weeds and broadleaf weeds, etc., and has the characteristics of expanding the herbicidal spectrum, reducing the application amount, being able to produce a synergistic effect and solving the problem of resistant weeds, etc.

This invention provides a ternary herbicidal composition containing an ALS enzyme inhibitor and its application. The herbicide composition comprises three active ingredients: active ingredient A is pyrimisulfuron and its salt; active ingredient B is quinclorac acid and its salt; and active ingredient C is selected from one of clopyralid, triclopyralid, clopyralidic acid, fluorochloropyralidic acid and its salts and esters. The weight ratio of each active ingredient is 1:(1-50):(1-50), and the total weight percentage of the active ingredients in the herbicidal composition is 1-80%. This ternary herbicidal composition can be used to control various grass weeds, broadleaf weeds, and sedge weeds in warm-season lawns. It has a significant synergistic effect compared to single-component herbicides, improving control efficacy, especially against pyrimisulfuron-methyl weeds. Furthermore, it also has good control efficacy against older weeds, with a long-lasting effect and high safety.

The invention discloses a compound herbicide and a preparation method thereof and relates to the technical field of pesticides. The compound herbicide is compounded by taking rimsulfuron, pyroxsulam and fluroxypyr-mepthyl as effective components and supplementing a safener, a surfactant, an emulsifier, a stabilizer and a solvent. The action mechanisms of the three active ingredients are complementary and synergistic, and annual gramineous weeds and broadleaf weeds in a corn field can be effectively prevented and removed. Through scientific compounding, the application dosage of a single component is remarkably reduced, pesticide residues in the environment and crops are reduced, meanwhile, potential phytotoxicity to the crops is effectively relieved by adding the safener, and the bactericidal composition has the advantages of being efficient, safe and environmentally friendly.

The application provides a herbicide composition for preventing and treating cyperus iria, a preparation method and application thereof, and aims to solve the technical problem of lacking effective and controllable herbicide for cyperus iria and various monocotyledonous and dicotyledonous weeds in the field. The herbicide composition is composed of effective components and necessary adjuvants, wherein the effective components are composed of atrazine, halosulfuron, thifensulfuron-methyl and fluroxypyr according to a weight ratio of 9.0-54.0:0.75-3.0:0.75-3.8:1.5-6.5. The herbicide composition has rapid and effective prevention and control effects on common annual grass weeds and broadleaf weeds in the millet field, and can eradicate the malignant weed cyperus iria. The herbicide composition is safe to the millet, and can also play a certain role in controlling the growth of the millet, reduce the plant height of the millet, reduce the risk of lodging of the millet, and improve the yield of the millet.

The present application relates to a kind of herbicidal composition of pyrimisulfan and its preparation method and application scheme, including active ingredient (A) pyrimisulfan or its salt, (B) quinclorac or its salt and (C) carfentrazone-ethyl or its salt, the weight ratio of each active ingredient is (1-24):48:(1-24), the total weight of active ingredient is 1% to 70% of the total weight percentage of herbicidal composition.Excellent activity is shown to a variety of grass weeds, broadleaf weeds and sedge weeds, such as barnyard grass, crabgrass, knotweed, pigweed, shepherd's purse, and cyperus rotundus, in warm-season turf, while the synergistic effect is significant, not only improves the effect of weeding, but also expands the control spectrum, while reducing the number of applications, reducing environmental pressure, reducing the use of pesticides and costs, and delaying the development of resistance.

The invention discloses a leaf age dynamic monitoring-based early recognition method for resistant gramineous weeds in a rice field, which comprises the following steps: when the gramineous weeds in the rice field grow to a 2-3 leaf period, selecting a sample area and spraying a target herbicide; starting from the third day to the seventh day after pesticide application, regularly measuring the leaf age of the weeds; judging the resistance level of weeds to the herbicide according to the leaf age growth condition: the leaf age growth is greater than or equal to 1.0 new leaf within 7 days after the herbicide is applied, and the plants grow normally and are resistant weeds; if the leaf age is increased to less than 1.0 new leaf within 7 days after application, the weeds are sensitive weeds. By quantifying the leaf age growth dynamic, sensitive weeds and resistant weeds can be quickly distinguished within 3-7 days after pesticide application, early diagnosis of the resistant weeds is realized, and technical support is provided for accurately selecting herbicides and delaying resistance development.

The invention discloses a method for realizing regular close planting, green prevention and control of weeds and non-heading Chinese cabbage planting by combining spray irrigation / micro-spray irrigation water supply through a specially-perforated full-biodegradable mulching film under the conditions of facility rain sheltering and an insect-proof net, relates to the technical field of vegetable cultivation and watering management, and is suitable for green infarction Chinese cabbages or seedling Chinese cabbages. Comprising the following steps: selecting sandy loam facilities for rain-sheltering cultivation, preparing soil, making turtle back furrows and applying base fertilizer; a black punching degradable mulching film is laid, the width of the film is 2.0 m, the width of a middle punching area is 1.3 m, the hole diameter is 3 cm, the hole pitch is 12 * 12 or 15 * 12 or 15 * 15 cm, and the thickness of the film is 6 microns or 8 microns; direct seeding or seedling transplantation is carried out according to hole sites, and one plant is reserved in each hole to form regular close planting; watering by spray irrigation / micro-spray irrigation until soil 2cm below the furrow surface is wet, supplementing water in the morning and evening or at night in the middle and later periods, and draining after raining; in the growth period, no ridge surface weeding is carried out, the weed plant control effect is larger than or equal to 92%, the mulching film does not enter the cracking period during harvesting, and harvesting is carried out 20-35 days after sowing and planting.

The invention relates to the technical field of compound synthesis and pesticides, in particular to an N-phenylpyrazole derivative and a preparation method and application thereof.The N-phenylpyrazole derivative has the 100% control effect on broadleaf weeds under the dosage of 37.5-150 g a.i. / ha, and part of compounds have the good control effect on grassy weeds; the compound can obtain a better weeding effect at a low dosage, can be used as a potential PPO inhibitor and broadleaf weed post-emergence herbicide for development and use, and has the advantages of novel structure, simple preparation process, low production cost and wide application prospect.

The invention provides a herbicide compound for preventing and removing weeds in a radix angelicae pubescentis field. The herbicide compound comprises 40% of prometryn wettable powder (mass), 30% of benazolin suspending agent (volume) and a vegetable oil synergist (volume). The ratio of the components is (8-14): (4-12): 9. The compound is safe to the radix angelicae pubescentis and has an excellent control effect on annual broadleaf weeds and annual grassy weeds (the total control effect reaches 95% or above), stem and leaf spraying in the seedling stage has soil closed weeding activity, weeds in the whole growth period of the radix angelicae pubescentis can be controlled through one-time pesticide application, secondary pesticide application or manual weeding is avoided, the production cost is greatly reduced (1, 100-2, 300 yuan / mu), and cost saving and synergism are remarkable. The added plant oil synergist can improve the control effect, reduce the dosage of prometryn and benazolin so as to effectively reduce the environmental risk, improve the safety to succeeding crops, and effectively delay the generation and development of the drug resistance of weeds.

The invention discloses a pesticide spraying and weeding integrated device, and relates to the technical field of agricultural machinery, the pesticide spraying and weeding integrated device comprises a containing cavity formed in a cutting machine main body, the bottom end of the containing cavity extends to the bottom of the cutting machine main body to be communicated with the outside, the cutting machine main body is further provided with a channel with one end communicated with the outside, and the other end of the channel is communicated with the top of the containing cavity; a cutting piece is arranged in the containing cavity and further comprises a plurality of cutting blades arranged below the containing cavity. According to the weeding device, the driving mechanism outputs power to drive the transmission piece to rotate, the transmission piece drives the cutting edge to rotate together to achieve weeding, weeds are conveyed upwards along the spiral guide of the transmission piece after being cut and enter the channel through the containing cavity, and the pesticide spreading outlet in the bottom end of the mounting pipe is located in the middle of the multiple cutting pieces; surrounding weeds can fly to the periphery or enter the accommodating cavity, so that a great deal of pesticide liquid is not easily wasted on the weeds, and more pesticide liquid can be directly sprayed on the ground.

This invention belongs to the field of pesticide weeding technology, and discloses a weeding composition and its application. The active ingredients of the weeding composition include active ingredient A, active ingredient B, and active ingredient C. Active ingredient A is bensulfuron-methyl, active ingredient B is benzothiamethoxam, and active ingredient C is bispyribac-methyl. The mass ratio of active ingredient A to active ingredient B to active ingredient C is 1:(3.75~60):(1~9). The weeding composition of this invention has excellent control effect on weeds in paddy fields, effectively controlling grass weeds, broadleaf weeds, and sedge weeds. It has a broad spectrum of weed control, reduces the amount of pesticides used, reduces environmental pollution, and lowers agricultural production costs.

The invention belongs to the field of fennel planting, and particularly relates to an ecological fennel planting method for selenium sand melons in a ploughing-reducing and sand-pressing land and application of the ecological fennel planting method. The method comprises the following steps: carrying out soil preparation treatment of deeply ploughing soil, applying a base fertilizer and spraying a weed sealing agent on the selenium sand melon reduced-tillage sand pressing land; secondly, sowing in spring through mechanical drilling, and synchronously applying a compound fertilizer and a bacterial fertilizer mixture containing specific microorganisms; in the field management, irrigation is only needed for 2-3 times in the whole growth period; monopotassium phosphate is sprayed on leaf surfaces in the early flowering stage and the filling stage; weeds are dynamically prevented and controlled according to different periods; and implementing threshold response type medicament control on powdery mildew, fennel, papilionella and the like. According to the method, the day and night temperature difference environment of the pressure sand land is fully utilized, the problems of soil hardening, fertility decline and desertification risks caused by continuous cropping of the selenium sand melons are solved, the physical and chemical properties of the soil are remarkably improved, the medicinal component content of the fennel is increased, and high-economic-value crops are synchronously produced; and a win-win planting scheme of ecological and economic benefits is provided for the sand-pressed and abandoned cultivated land in the arid region.

The invention discloses a gramineous weed center point positioning method. According to the method, firstly, an improved YOLOv11 model integrating an EMA attention mechanism and a Shape-IoU loss function is adopted to detect a weed target, and a target frame area is intercepted after positioning; performing Gaussian filtering and morphological closing and opening operation processing on the region to eliminate noise and fracture; reconstructing a trunk skeleton of weeds in the target area by using a B-spline parameterization smoothing technology, and extracting skeleton intersection points as candidate center points; and finally, determining the radius of a circular neighborhood based on the radius size of the circumcircle of the plant, and accurately positioning the central point of the stem base by quantifying the density distribution of target pixels in the neighborhood. The method effectively solves the positioning problem caused by variable forms of gramineous weeds, has the characteristics of high positioning precision and high speed, can meet the real-time operation requirement of an agricultural robot, and provides technical support for laser weeding and precise pesticide application.

The invention relates to a pre-emergence weeding composition and application thereof, and belongs to the technical field of pesticide compositions. The weeding composition takes pyroxasulfone and bisamide as effective components, and the mass ratio of pyroxasulfone to bisamide is (1-20): (20-1). The weeding composition can be prepared into a pesticide preparation, and the pesticide preparation comprises wettable powder, a suspending agent, a dispersible oil suspending agent, a microemulsion, an emulsion in water, granules and water dispersible granules. The pre-emergence weeding composition provided by the invention can effectively prevent and eliminate annual gramineous weeds and annual broadleaf weeds, can be safely used in wheat fields, soybean fields, peanut fields and vegetable fields, and is safe to crops and also safe to the environment. The weeding composition can be widely used for preventing and killing weeds such as lolium multiflorum, alopecurus aequalis, wild oats, bromegrass, chenopodium album, amaranthus retroflexus and shepherd's purse, and still has a relatively good prevention effect on intractable weeds.

The invention discloses a propanil suspending agent as well as a preparation method and application thereof. The propanil suspending agent comprises the following components in percentage by weight: 10%-40% of propanil, 3%-15% of metal salt, 3%-8% of an anionic dispersant, 3%-5% of an anti-freezing agent, 0.1%-0.2% of a defoaming agent, 0.1%-0.2% of a thickening agent and the balance of water. After normal temperature, heat storage and freeze thawing, the particle size of the propanil suspending agent keeps high stability. Compared with missible oil, the propanil suspending agent disclosed by the invention does not contain an organic solvent, so that not only can the production cost be saved, but also the damage of chemical drugs to rice can be reduced; compared with wettable powder, the propanil suspending agent has the advantages that no dust is generated in the production and processing processes, and the harm of the dust to operators can be avoided. Besides, the propanil suspending agent disclosed by the invention can be used for effectively preventing and removing gramineous weeds in paddy fields and is safe to rice, so that the propanil suspending agent has very high market value.

This invention provides a multi-sensor obstacle recognition method, system, and terminal for lawnmower robots. The lawnmower integrates a visual sensor and a time-of-flight (TOF) sensor. By acquiring images and TOF data, the system processes the images and extracts a mask for the grass region. Then, based on the images and TOF data, point cloud partitioning and grass height estimation are performed. Combined with the grass region mask, accurate obstacle recognition is achieved. This method combines the advantages of visual and TOF sensing technologies to construct a more robust and efficient obstacle recognition system, significantly improving the lawnmower robot's adaptability in complex environments and ensuring its operational safety. This invention effectively reduces the limitations of lawnmower usage, significantly reduces the missed and false detections of small obstacles due to grass obstruction, and avoids misidentifying tall grass and weeds as obstacles, thereby significantly improving the accuracy of obstacle recognition.

This invention relates to the field of pesticides and herbicides, and discloses a compound containing a benzimidazole structure, its application, and a herbicide. The compound has the structure shown in formula (I). The aforementioned compound containing a benzimidazole structure provided by this invention exhibits high herbicidal activity against broadleaf weeds, grass weeds, and sedge weeds.

The application belongs to the field of biological weed control, and discloses a Calonectria ilicicola and application thereof in weed control. The Calonectria ilicicola is mainly used for the prevention and treatment of broadleaf weeds in agricultural production, and also shows pathogenic activity to some common grass weeds. The Calonectria ilicicola and metabolites thereof can cause diseases to various broadleaf weeds and some grass weeds, and have strong pathogenicity, so that target weeds such as Alternanthera philoxeroides and Ageratina adenophora can be effectively controlled. In addition, a metabolite 7α-hydroxytrichodermol is identified in the fermentation liquor of the fungus, and the metabolite also has pathogenic activity and can be used as an auxiliary or independent weed control active ingredient. The Calonectria ilicicola is safe to the environment, has certain selectivity and a wide herbicidal spectrum, and has the application potential of being developed into a biological herbicide.

The present invention belongs to the art of pesticides, and more particularly to substituted pyrrolidone compounds, methods for preparing the same, and their compositions and applications. The substituted pyrrolidone compounds are as shown in general formula I: JPEG2026510099000158.jpg39153 (In the formula, Q is, JPEG2026510099000159.jpg39153 represents; X and Y independently represent hydrogen, alkyl, alkenyl, alkynyl, etc.; Z represents alkyl, alkenyl, alkynyl, etc.; W1 and W2 independently represent O or S; R6 represents hydrogen, hydroxyl, halogen, etc.; R7 represents hydrogen, halogen, etc.; R8 represents hydrogen, alkyl, alkenyl, alkynyl, etc.). The compound has excellent herbicidal activity against grass weeds and other species, is safe, and has high selectivity for crops. In addition, it has good control activity against various fungi, such as tomato gray mold, rice sheath blight, and apple ring spot, as well as agricultural pests, such as lepidopteran insects (e.g., Spodoptera frugiperda, Mythimna separata).

To provide a traveling-type steam weed-killing machine capable of killing weeds by using high-temperature steam while traveling.SOLUTION: The traveling-type steam weed-killing machine of the present application includes a steam generator that generates steam, a steam box that guides weeds to be killed into a weed-killing region formed therein and maintains the temperature of the steam while preventing the steam injected into the weed-killing region from being released to the outside, and traveling means on which the steam generator and the steam box are mounted.SELECTED DRAWING: Figure 1