11 results about "Noxious weed" patented technology

The invention relates to the field of pasturing livestock nutrition and feed resource development, and particularly discloses an application method of a digestion and emission reduction functional composite preparation for pasturing cattle in saline-alkali soil, and the application method comprises the following steps: S1, selecting Allium mongolicum and Stellera chamaejasme as raw materials, and screening an optimal mixing ratio through in vitro rumen fermentation; s2, preparing a granular composite preparation according to the optimal proportion; s3, supplementary feeding is conducted on the saline-alkali land grazing cattle according to the fixed dosage. The method solves the problems of low digestibility and high methane emission of saline-alkali soil grazing cattle due to ingestion of low-quality forage grass, and solves the technical gaps that Allium mongolicum and Stellera chamaejasme are wasted as traditional toxic weed resources, and single grass seeds are difficult to synergistically realize digestion promotion and methane emission reduction, improves the digestibility of saline-alkali soil grazing cattle and nitrogen utilization efficiency, and improves the economic benefit of the saline-alkali soil grazing cattle. Methane emission is synchronously reduced, toxic weeds are converted into functional indigenous grass, the feed source is expanded, the breeding cost is reduced, the technology adapts to the grazing scene, operation is easy and convenient, and large-scale application and popularization are easy.

The invention belongs to the technical field of oil-tea land soil quality improvement, and discloses a pasture-based oil-tea land soil quality improvement method, which is characterized in that at least one kind of pasture is interplanted in an oil-tea land, and the pasture comprises broadleaf paspalum and stylosanthes guianensis; the planting density of the broadleaf paspalum is 30 + / -2 g / m < 2 >, and the planting density of the stylosanthes guianensis is 3 + / -0.5 g / m < 2 The pasture further comprises tephrosia rubescens and pigeonpea, the planting density of the tephrosia rubescens is 5 + / -0.5 g / m < 2 >, the planting density of the pigeonpea is 5 + / -0.5 g / m < 2 >, after the pasture is sown, the plant height needs to be controlled to be 30-40 cm in the young camellia oleifera forest, and the plant height needs to be controlled to be 40-55 cm in the adult camellia oleifera forest. The method provided by the invention can improve the diversity of plants in the camellia oleifera field; the under-forest vegetation coverage of the camellia oleifera forest can be improved, and a good habitat is built; the soil habitat can be improved, the water and soil loss of the camellia oleifera forest is reduced, the soil porosity is improved, and the soil bulk density is reduced; in addition, the forage grass can be used as forage grass to be eaten by livestock and poultry.

The present application relates to the technical field of orchard ecological cultivation, in particular to a method for orchard annual intercropping vegetable coupling ecological weed control. It comprises the following steps: (1) winter weed prevention community construction; (2) spring intercropping community connection; (3) summer weed and insect prevention community construction; (4) autumn intercropping community connection; (5) winter weed prevention community maintenance. The present application provides an orchard annual chemical-free weeding integrated ecological management method which is suitable for multiple ecological regions across the country, takes into account long-term prevention and control of annual weeds and perennial noxious weeds, ecological prevention and control of common orchard pests, completely avoids water and fertilizer competition between intercropped vegetables and fruit trees, simultaneously improves soil, improves fruit quality, and can realize economic benefit improvement through intercropped vegetables.

Novel herbicidal compositions and their applications in crop protection, specifically in controlling growth of harmful weeds are provided.

The invention discloses a method for eradicating worst weed cyperus rotundus in southern dry farming acidified soil, and belongs to the technical field of crop weeding. The eradication method specifically comprises the following steps: by taking alkaline heating source nitrogenous fertilizer ammonium bicarbonate and lime nitrogen as core materials, decomposing the alkaline heating source nitrogenous fertilizer ammonium bicarbonate and the lime nitrogen in a high-temperature and high-humidity closed acidified soil environment to generate mixed products such as high-concentration alkaline ammonia gas, acidic carbon dioxide, cyanamide and dicyandiamide; the mixed product has a synergistic effect, the killing effect on ammonium poisoning in acid soil is remarkably enhanced, fatal ammonium poisoning is formed on deep cyperus rotundus tubers of the soil, the cyperus rotundus is thoroughly eradicated, meanwhile, the improvement effect on the southern dry farming acidified soil is taken into account, and the soil quality is improved. The technical problems that deep tubers of cyperus rotundus cannot be killed through single chemical weeding, relapse is prone to occurring, and soil deterioration is aggravated are solved.

The invention discloses a weeding composition as well as a preparation method and application thereof. The weeding composition comprises dichloro clomazone, and any one of pinoxaden and metamifop. The herbicide controlling spectrums of the two agents selected by the composition are complementary, can effectively kill weeds in different groups respectively, and can effectively cover common weeds in fields such as gramineae and broadleaf weeds; moreover, after the two medicaments are compounded for use, an obvious synergistic effect is achieved, the dosage of pinoxaden or metamifop can be greatly reduced, and the safety to wheat and rice is improved. Experimental data show that the weeding composition can be used for preventing and controlling worst weeds which are difficult to control in wheat fields and paddy fields at present, the extremely urgency that prevention and control agents for the weeds which are difficult to control are deficient is overcome, and the weeding composition has excellent industrial application potential.

The invention discloses a camellia oleifera forest biodiversity vegetation construction method, belongs to the technical field of camellia oleifera planting, and solves the problems that growth of worst weeds and seed propagation are difficult to effectively inhibit, the soil environment cannot be effectively improved, and the organic matter content, porosity and water retention of soil cannot be effectively improved by adopting single vegetation in the prior art. The method comprises the following steps: determining a vegetation construction object, determining a plant mixed sowing strategy based on the vegetation construction object, determining plant varieties interplanted with camellia oleifera plants within and outside a preset radius range based on plant heights, and determining the sowing quantity and the planting density of the plant varieties; according to the embodiment of the invention, the biological diversity of the camellia oleifera forest can be effectively increased, the ecological stability of the camellia oleifera forest is improved through diversified vegetation construction, so that the growth rate and density of worst weeds are remarkably reduced, and meanwhile, the soil structure and fertility of a camellia oleifera field are remarkably improved. The ecological environment of a camellia oleifera field is remarkably improved, and healthy growth of camellia oleifera is promoted.

This invention discloses a method for intercropping multiple forage grasses in citrus orchards. Addressing the drawbacks of traditional clean cultivation management and single-grass intercropping in citrus orchards, it employs a mixed sowing of four varieties: ryegrass, white clover, gnaphalium affine, and milkvetch. It includes standardized steps for orchard pretreatment, seed pretreatment, precision sowing, seedling management, growth period management, forage harvesting and returning to the field, and water and fertilizer regulation. Strict control of parameters at each stage is maintained, and a specific ratio of compound bio-fertilizer is selected to optimize the citrus water and fertilizer management scheme. This invention achieves year-round closed coverage of the citrus orchard through the complementary characteristics of the four forage grasses, improving the control rate of noxious weeds, reducing soil erosion, increasing soil organic matter content, and increasing citrus yield per acre. It combines the advantages of improving soil fertility, suppressing weeds and conserving moisture, improving quality and efficiency, and promoting a green and ecological environment, thus constructing a highly efficient and sustainable citrus ecological planting system.

To provide a difluorobutenoic acid amide compound having excellent controlling effects on harmful weeds, and a herbicidal composition containing it.A herbicidal composition comprising as an active ingredient a difluorobutenoic acid amide compound represented by the formula (I) or a salt thereof:wherein the symbols are as defined in the specification, has excellent controlling effects on harmful weeds.

Provided are a noxious weed identification method based on a satellite, a UAV, and near-ground images, and a device, which relates to the technical field of image identification. The method includes the following steps: inputting a current region-scale satellite remote sensing image into a region-scale noxious weed identification model, to obtain a region-scale noxious weed abundance identification result. The region-scale noxious weed identification model is obtained through training based on a historical region-scale feature data set and a predicted plot-scale noxious weed abundance identification result; the historical region-scale feature data set is a data set obtained by sifting historical region-scale satellite remote sensing images based on a historical quadrat-scale feature variable; and the historical quadrat-scale feature variable is a feature obtained by processing a historical near-ground hyperspectral image of a target region. By adopting the above steps, the present application improves the identification precision of the noxious weed abundance.

The invention relates to the technical field of sowing machines, and discloses a seed sowing device and a grassland toxic grass substitution control method.The seed sowing device comprises a sowing machine, a motor and a centrifugal sowing piece are arranged on the sowing machine, a main seed box and an auxiliary seed box are symmetrically arranged on the sowing machine, a connecting pipe is arranged at the bottom of the main seed box, and a switching mechanism is arranged on the sowing machine; the switching mechanism comprises a through pipe and a transmission assembly, a discharging opening is formed in the through pipe, the sowing machine is further provided with a ditching mechanism, and the ditching mechanism comprises a ditching opener and a reciprocating lead screw. The effect of rapidly switching sown grass seeds is achieved, so that during sowing, a user can adjust the types of the grass seeds according to the grassland environment adaptability, and the sowing efficiency is improved. According to the device, the centrifugal sowing piece is arranged in the main seed box, grass seeds left in the main seed box in the centrifugal sowing piece can be sown out as soon as possible, the position of the furrow opener can be adjusted, and therefore the follow-up furrow opening depth of the furrow opener can be matched with the planting depth of the grass seeds after switching, and the practicability is further improved.