24 results about "Poa annua" patented technology

The invention belongs to the technical field of multifunctional composite seed coatings for ecological restoration of high and cold regions, discloses a Qinghai cold-region bluegrass seed coating agent and a preparation method thereof, and aims to solve the composite problems of component antagonism, time sequence mismatch, freeze-thaw failure and the like in the prior art. The coating agent is characterized in that a three-layer composite structure of a biological core layer, a nutrition buffer layer and a functional protection layer is sequentially coated on the surface of a seed from inside to outside. The biological core layer comprises complex microbial inoculant particles and a first adhesive; the nutrition buffer layer comprises a low-temperature germination inducer, a slow-release nutrition microcapsule and a second adhesive; the functional protection layer comprises an interpenetrating network polymer skeleton, high molecular weight sodium alginate, nano silicon dioxide particles subjected to surface modification by a silane coupling agent KH-570 and food-grade indigo dye. By means of the scheme, efficient germination and stable planting of the Qinghai cold land bluegrass seeds in the high and cold environment are achieved.

The invention relates to the technical field of concealed project acceptance, and discloses an alpine region bluegrass cold-resistant growth-promoting nutrient solution and an application method thereof.The nutrient solution is composed of main nutrient elements such as nitrogen, phosphorus and potassium and microelements such as iron, manganese, zinc, copper and boron, and amino acid substances such as glycine, alanine and proline are added; therefore, comprehensive and balanced nutrition support is provided. Through a scientific fertilization strategy, including three stages of seed treatment, seedling stage management and growth stage management, and in combination with a drip irrigation system and a foliage spraying technology, efficient utilization of nutrients and healthy growth of plants are ensured. According to the method, the growth speed and biomass of the bluegrass are remarkably increased, the soil structure is improved, the stress resistance of crops is enhanced, the nutrient utilization efficiency is improved, and finally the product quality and market value are improved; the comprehensive benefits are beneficial to promoting the sustainable development of agriculture in alpine regions.

The invention discloses a method for monitoring vegetative propagation growth of roots and stems of bluegrass based on clustering processing. The method comprises the steps of multi-source monitoring data acquisition, multi-source data preprocessing, growth state monitoring clustering model construction, clustering structure optimization and layered clustering growth state monitoring. The invention relates to the technical field of plant propagation data processing, in particular to a method for monitoring vegetative propagation growth of roots and stems of bluegrass based on clustering processing, which innovatively proposes a bi-clustering mechanism based on a main-sub layered structure, and significantly improves the accuracy, stability and agricultural availability of growth state monitoring. A misclassification point recognition mechanism and a misclassification triggering mechanism are designed, and a cluster adjustment factor is introduced, so that the adaptability and the expression ability of a complex plant growth monitoring behavior mode are enhanced; an optimization algorithm and an optimal parameter combination of a growth state monitoring clustering model are improved by adopting a mirror surface reverse mechanism and a sine and cosine function method, and a clustering structure is optimized, so that the accuracy of a growth state monitoring result is improved.

Methods for controlling and / or suppressing Poa annua (annual bluegrass) in a stand of warm season turfgrass are provided. In certain aspects, the methods may include contacting a stand of warm season turfgrass comprising Poa annua with an herbicidally effective amount of thiencarbazone-methyl when the Poa annua is in an early post-emergence growth state or during an early post-emergence period of time.

Methods for controlling and / or suppressing Poa annua (annual bluegrass) in a stand of warm season turfgrass are provided. In certain aspects, the methods may include contacting a stand of warm season turfgrass comprising Poa annua with an herbicidally effective amount of thiencarbazone-methyl when the Poa annua is in an early post-emergence growth state or during an early post-emergence period of time.

The application discloses a method for improving genetic transformation rate of high-altitude meadow grass, comprising the following steps: (1) taking mature seeds of high-altitude meadow grass as explants to induce callus, and obtaining the callus; (2) adding a surfactant Silwet L-77 with a mass fraction of 3‰ of the bacterial liquid to the agrobacterium bacterial liquid carrying a hygromycin resistance gene, and obtaining a culture bacterial liquid; (3) placing the regenerated plant in a screening culture medium containing 40 mg / L of hygromycin resistance for culture, screening the survived plants, and obtaining the genetically transformed plants. The method can improve the transformation efficiency of the high-altitude meadow grass by about 4.54 times through adding the surfactant in the genetic transformation process and cooperating with the screening of the obtained differentiation culture medium.

The invention belongs to the technical field of gene engineering, and particularly relates to a poa pratensis drought-resistant gene PpNRT2.4 and application thereof. The invention provides a nitrate transporter gene PpNRT2.4 from poa pratensis, provides a complete coding sequence of the nitrate transporter gene PpNRT2.4 and a protein sequence coded by the nitrate transporter gene PpNRT2.4, clarifies biological functions of the PpNRT2.4 gene, and verifies that the drought resistance of transgenic plants can be remarkably improved by overexpression of the PpNRT2.4 gene. A precise, efficient and safe innovative technical path is provided for creating new drought-resistant germplasm of turfgrass and other crops and breaking through the traditional breeding efficiency bottleneck.

The invention relates to the technical field of propagation regulation and control, and provides a big data-based intelligent optimization method for the rootstock asexual propagation of bluegrass, which is applied to a rootstock asexual propagation production scene and runs in a closed-loop regulation and control system consisting of field sensing equipment, an edge computing gateway, a central intelligent decision-making server and water, fertilizer and agricultural machinery execution equipment. According to the method, a propagation state vector is constructed based on multi-source field perception data, a rhizome asexual propagation regulation process is modeled into a long-term time sequence decision problem with resources and security constraints, a prefix-guided reinforcement learning training mechanism is introduced by screening historical departure strategy trajectories, and the method is suitable for the field asexual propagation regulation process on the premise of meeting equipment performability and agronomic security constraints. Collaborative optimization of irrigation, fertilization and agricultural machinery operation is realized, so that the stability of vegetative propagation of the roots and stems of the bluegrass and the resource utilization efficiency are improved.

The invention belongs to the field of herbicides. In particular to a 3-phenylisoxazoline-5-formamide ester compound and application thereof. The invention relates to a 3-phenylisoxazoline-5-formamide ester compound which is shown as a general formula I: # imgabs0. The compound has good selectivity on grass lawns such as goosegrass, cynodon dactylon, broom corn millet, bluegrass, ryegrass and the like, and can be used for preventing and removing a plurality of key grass weeds and broadleaf weeds. And tests on wheat, peanuts, soybeans, cotton, oilseed rape, potatoes, sorghum, vegetables and the like under different pesticide application modes show excellent selectivity and commercial value.

The invention belongs to the field of poa coccinea seed peel loosening, and particularly discloses a special peel loosening device for rapid germination of poa coccinea seeds in a high-cold region, which comprises a stable rack, a vibration peel loosening generating device, a lossless reciprocating friction peel loosening device and a leveraging type spraying device. According to the contradictory characteristic that when the poa coccinea seeds are subjected to peel loosening, friction needs to be carried out (the poa coccinea seeds are subjected to peel loosening), and friction cannot be carried out (embryos in the poa coccinea are prevented from being damaged), the technical effect that the poa coccinea seeds are subjected to lossless and efficient peel loosening is achieved by adopting a mode of combining flexible contact and hard peel loosening; and through the arrangement of the force-borrowing type spraying device, the technical effect of spraying a growth agent to the bluegrass seeds is achieved only by means of the rotating force generated when the barks of the bluegrass seeds are loosened, and the germination rate of the bluegrass seeds is further increased.

The present embodiments provide methods for selectively controlling weeds in improved turfgrass, comprising applying clomazone to the improved turfgrass. Until now, clomazone has not been considered for use in improved turf due to unacceptable / anti-aesthetic bleaching properties, which are overcome by the methods described herein. The methods include consideration and management of clomazone application timing relative to turf type, turf dormancy, and overseeding timing and planting depth. The present methods provide the use of clomazone in the control of Poa (Poa annua and P. trivialis) in warm-season and cool-season improved turf types, such as Bermuda grass, Zoysia grass, St. Augustine grass, Centipede grass, Ryegrass, Fescue turf types, Kentucky Bluegrass, or mixtures of thereof. The methods further facilitate the use of clomazone to control Poa and other weeds in overseeding practices, such as overseeding with Ryegrass or Kentucky Bluegrass. These methods achieve desired turfgrass tolerance and turf aesthetics while still achieving desired selective weed control efficacy, supporting a new use for clomazone in improved turfgrass markets.

The present invention belongs to the technical field of plant cultivation, and particularly relates to a method for rapid tissue culture propagation of alpine wild Kentucky bluegrass. The tissue culture medium for alpine wild Kentucky bluegrass of the present invention comprises a primary medium, a multiple shoot induction medium and a rooting medium; 6-BA and 2,4-D are added to the primary medium and the multiple shoot induction medium; NAA is added to the rooting medium. Under the combined action of 6-BA, 2,4-D and NAA in each medium, the seeds of wild Kentucky bluegrass are induced to germinate and tissue differentiation occurs, obtaining a large number of multiple shoots and tissue culture seedlings, which can not only maintain the original genetic traits and bio-ecological characteristics, but also rapidly propagate to obtain seedlings, realizing the rapid domestication and breeding of native grass seeds, and providing effective technical support for the preservation of excellent traits of wild grass seeds and the breeding of new varieties.

The present invention discloses a method for monitoring the asexual reproduction and growth of rhizomes of bluegrass based on clustering processing, and the method includes multi-source monitoring data acquisition, multi-source data preprocessing, construction of a growth status monitoring clustering model, clustering structure optimization and hierarchical clustering growth status monitoring. The present invention relates to the technical field of plant reproduction data processing, and specifically refers to a method for monitoring the asexual reproduction and growth of rhizomes of bluegrass based on clustering processing. This solution innovatively proposes a dual clustering mechanism based on a master-sub hierarchical structure, which significantly improves the accuracy, stability and agricultural usability of growth status monitoring; designs a misclassification point recognition mechanism, a misclassification trigger mechanism and introduces a cluster adjustment factor to enhance the adaptability and expression ability of complex plant growth monitoring behavior patterns; adopts a mirror inversion mechanism and a sine-cosine function method to improve the optimization algorithm, the optimal parameter combination of the growth status monitoring clustering model, optimizes the clustering structure, and improves the accuracy of the growth status monitoring results.

The invention belongs to the technical field of plant tissue culture, and particularly relates to a combined culture medium for mature zoysia japonica seeds and a tissue culture method. The culture medium comprises an induction culture medium, a subculture medium, a differential culture medium and a rooting culture medium, and the components of each culture medium are limited. According to the method, the callus is induced by adjusting the proportion of the culture medium, the callus with high-efficiency proliferation rate and high-frequency regeneration capacity is screened through multiple subculture, the proliferation rate of the callus is up to 313.33%, the plant regeneration rate is 92% or above, and the differentiation capacity of the callus is still high after 18 months of subculture.

The invention relates to the technical field of agricultural breeding, in particular to a meadow grass-endophytic fungus symbiont construction method which comprises the following steps: culturing meadow grass aseptic seedlings; purifying and culturing an LE3 endophytic fungus strain; inoculating the LE3 endophytic fungi to the sterile seedlings of the poa pratensis; transplanting the inoculated seedlings; carrying out endophytic fungus detection on the inoculated seedlings; growing in a field: transplanting the seedlings with bacteria to the field. When the symbiont is constructed, an LE3 strain which only generates insect-resistant alkaloid and does not generate alkaloid harmful to livestock is selected. The agronomic characters of the obtained symbiont are remarkably improved compared with those of a control group. Wherein after the host plant is infected by the LE3 strain, the plant height, stem diameter, leaf length, leaf thickness, potassium element content and soluble sugar content of the host plant are obviously increased. Wherein the plant height, the stem diameter, the leaf length and the leaf thickness are respectively increased by 14.18%, 26.18%, 12.16% and 5.06%, and the potassium content and the soluble sugar content are respectively increased by 90.49% and 89.00%.

Methods for controlling and / or suppressing Poa annua (annual bluegrass) in a stand of warm season turfgrass are provided. In certain aspects, the methods may include contacting a stand of warm season turfgrass comprising Poa annua with an herbicidally effective amount of thiencarbazone-methyl when the Poa annua is in an early post-emergence growth state or during an early post-emergence period of time.

The invention relates to the technical field of greening construction, in particular to a drought-resistant and trampling-resistant lawn with a repairing function and a construction method.The construction method comprises the steps that soil scarifying pretreatment is conducted on a construction area, and adjustment is conducted according to the pH value of soil; a capillary water guide layer is laid on a soil substrate, the capillary water guide layer is composed of modified ceramsite, composite slow-release particles are mixed into a planting layer, grass seeds are subjected to coating treatment, the grass seeds are soaked in a starch-lignin aqueous solution and dried to form a degradable film layer, the grass seeds are compounded of cynodon dactylon, zoysia japonica and bluegrass, and the degradable film layer is coated with the composite slow-release particles. Sowing the coated grass seeds on the surface of the planting layer, and spraying a spraying agent containing cellulose nanocrystals; spraying a humidity-sensitive degradable covering film on the surface layer of the grass seeds; according to the method, soil moisture can be effectively accumulated and preserved, evaporation loss can be remarkably reduced, the water utilization efficiency can be improved, and the lawn can keep high survival rate and greenness in a drought environment.

The present application belongs to the technical field of ecological restoration, and particularly relates to a method for restoring moderately degraded alpine meadow. The method comprises the following steps: step 1, determining the type of the alpine meadow to be restored; and step 2, planting a specific combination of Poaceae species according to the type of the alpine meadow to be restored. When the type of the alpine meadow to be restored is Kobresia pygmaea type, the combination of Poaceae species is Poa crymophila and Poa pratensis. When the type of the alpine meadow to be restored is Carex atrata type, the combination of Poaceae species is Poa compressa and Elymus nutans. When the type of the alpine meadow to be restored is Elymus nutans type, the combination of Poaceae species is Elymus nutans and Festuca sinensis. The present application can effectively promote the restoration of moderately degraded alpine meadow, and has a good application prospect.

The invention belongs to the technical field of agricultural control, and particularly relates to application of ligularia purdomii extract in inhibiting pasture germination, and the ligularia purdomii extract is obtained by extracting the root of ligularia purdomii with an organic solvent. The natural herbicide extracted from the plant ligularia purdomii replaces the traditional chemical herbicide. The ligularia purdomii extract has obvious effects of inhibiting germination potential and germination rate on various common grass seeds, such as poa pratensis, festuca arundinacea, elymus nutans and wheatgrass. Under the level of 0.50 mg / mL, the petroleum ether phase and the ethyl acetate phase can obviously inhibit the germination potential of the poa pratensis; under the concentration of 2.0 mg / mL, the inhibition effect on the germination potential and the germination rate of the poa pratensis, the elymus nutans, the wheatgrass and the festuca arundinacea reaches the maximum, the germination potential of the poa pratensis can be reduced to 0-3.33%, the germination rate can be reduced to 0, and the inhibition effect on other grass seeds is also very obvious.

The invention belongs to the technical field of herbicides, and particularly relates to an efficient weeding composition for airport lawn broadleaf weeds and application thereof.The efficient weeding composition is prepared from carfentrazone-ethyl, chipton sodium, fluroxypyr-mepthyl and 2, 4-D isooctyl ester as main effective components, by matching with a special auxiliary agent composed of xanthan gum, polyethylene glycol and the like and a pesticide application method matched with an airport scene, efficient prevention and control of rumex plicata broadleaf weed plants are achieved, and the weeding composition is safe, free of phytotoxicity and low in soil residue on common airport turfgrass such as cynodon dactylon, bluegrass, agrostis pilosa and festuca arundinacea. The device can cut off a grass-insect-bird ecological chain of an airport, remarkably reduces the bird strike risk, is suitable for lawns of various airport flying areas, and has extremely high popularization value.

A method is disclosed for using simazine to control and reduce the formation of flowers and seed heads in turfgrasses, including cool-season turfgrasses, and to suppress the growth of annual bluegrass (Poa annua). The method comprises applying an effective dose of simazine to the turfgrasses. A method is also disclosed for enhancing the color and quality of cool-season turfgrasses as a result of a penox slam treatment applied to turfgrasses, including cool-season turfgrasses. The method comprises applying an effective dose of simazine to the turfgrasses. A method for selectively controlling barnyard grass (Paspalum vaginatum) in turfgrasses, including Bermuda grass, is further disclosed, the method comprising applying an effective dose of simazine to the turfgrasses.

The invention discloses a method for detecting rhizosphere and non-rhizosphere microbial communities of bluegrass based on a metagenome technology, and relates to the technical field of molecular biology, and the method comprises the following steps: (1) sample collection, (2) soil DNA extraction: circularly grinding a sample through freezing-pyrolysis, cracking with a CTAB buffer solution at 65 DEG C, carrying out trichloromethane extraction, removing RNA from RNase, and carrying out ethanol precipitation and crude extraction; (3) DNA purification: treating with GDP, purifying with an adsorption column, and eluting with a preheated elution buffer solution; and (4) metagenome sequencing and community analysis are carried out, so that the DNA extraction problem caused by high content of inhibitors such as humic acid and polysaccharide in the soil in the alpine region and special microbial cell wall structures is effectively solved, and the DNA yield, purity and integrity are improved through an optimized splitting decomposition and purification strategy; and technical support is provided for extraction of metagenomes and analysis of microbial community structures in extreme environments such as alpine and the like.

Disclosed are methods of using Simazine for controlling, reducing formation of flowers and seedheads of, and suppressing growth of annual bluegrass (Poa annua) in a turf comprising a cool-season turfgrass species. The methods comprise applying an effective dosage of Simazine to the turf. Also disclosed is a method of enhancing color and quality of a cool-season turfgrass species as a result of Penoxsulam treatment applied to a turf comprising the cool-season turfgrass species. The method comprises applying an effective dosage of Simazine to the turf. Further disclosed is a method of selectively controlling seashore Paspalum (Paspalum vaginatum) in a turf comprising bermudagrass, the method comprising applying an effective dosage of Simazine to the turf.