9 results about "Propagation effect" patented technology

This invention discloses a Sulawesi datura (Sulawesi datura) Diaphanosoma celebensis A high-density, stable propagation method was developed. *Daphnia sulawis* was introduced as the initial population, with an initial density of 400–1500 ind / L. During cultivation, basal feed and nutrient solution were provided, with separate feeding via dual channels and staggered feeding times. The basal feed consisted of *Chlorella vulgaris* feed, replenished daily. The nutrient solution contained VB12, VC, VE, and vitamin H. Cultivation lasted 10–20 days. This method achieved a high-density propagation effect of approximately 7000 ind / L within the cultivation period and could maintain 6845 ind / L at r≈0.1285 d / L under scale-up conditions of ≥10 m³. ‑ ¹ Its propagation characteristics are replicable and scalable for engineering applications.

The application discloses a tissue culture and rapid propagation medium and method for African marula fruits, which is composed of lateral bud germination medium, cluster bud induction medium, cluster bud growth medium and rooting medium; 1L of the lateral bud germination medium is composed of MS medium, 0.05-0.07 mg of TIBA, 0.1-0.8 mg of GA3 and 3-10 g of agar; 1L of the cluster bud induction medium is composed of MS medium, 0.03-0.15 mg of TIBA, 0.2-1.2 mg of ZT, 0.3-0.8 mg of NAA, 20-40 g of sucrose and 3-10 g of agar; and the cluster bud growth medium is added with phosphate fertilizer on the basis of the cluster bud induction medium. The propagation coefficient of the method can reach 6.8 at most, the propagation effect is good, and the rooting rate of the marula fruit tissue culture seedlings is up to 95% or above. The application solves the problem of local planting of the African marula fruits.

The embodiment of the invention discloses an artificial breeding fish releasing site selection method, device and equipment and a storage medium, and relates to the technical field of water conservancy project ecological protection, and the method comprises the steps: determining the optimal flow velocity interval for the survival and inhabitation of target fishes through sampling the relationship between the distribution number of the target fishes and the flow velocity of the distribution site; obtaining an upstream induction flow velocity of the target fish by using a fish swimming ability test; establishing a hydraulic model based on the operation condition of the release area reservoir area, and calculating the flow velocity spatial distribution of the release area reservoir area under the target condition through the hydraulic model; and determining a target releasing site according to the flow velocity spatial distribution, the optimal flow velocity interval for survival and inhabitation of the target fish and the induction flow velocity for upstream tracking of the target fish. The technical problems that in the prior art, an empirical fish releasing method is adopted, so that the survival rate of fishes is not controlled, and the proliferation effect is poor can be solved.

The present application relates to the field of biotechnology, in particular to a propagation substrate of a Claroideoglomus lamellosum strain and a preparation method thereof. The Claroideoglomus lamellosum strain CXL-18 of the present application is a strain screened by the applicant, which has been disclosed in patent CN116004402A. At present, there is no suitable propagation system for the propagation of the strain on the market. According to the growth characteristics of the strain, a substrate for the strain CXL-18 is obtained, which has good and stable propagation effect, high abundance of cluster roots and significantly promotes spore propagation. The propagation effect of the substrate is better than that of all commercially available substrates. The substrate can provide a wider application prospect for the rapid propagation of the dominant strain CXL-18.

The present application relates to the technical field of medicinal plant tissue culture, in particular to a rapid virus-free cloning method and reagent combination for medicinal plant tissue culture. The method comprises the following steps: pretreatment and disinfection of explants, precise virus elimination, preparation of dynamic adaptive medium, rapid propagation, real-time high-throughput detection of virus-free, seedling raising and transplanting, etc. The reagent combination comprises a multifunctional degradable reagent kit, intelligent response type nano disinfection microcapsules, special reagents such as composite virus elimination liquid, etc. The virus elimination rate is greater than or equal to 95%, the survival rate of explants is greater than or equal to 90%, the propagation cycle is shortened by 30%, the detection time is less than or equal to 2 hours, the survival rate of transplanting is greater than or equal to 85%, and the degradation rate of reagents is greater than or equal to 90%. The present application is suitable for herbaceous, woody and liana medicinal plants of the families of Araliaceae, Eucommiaceae, Orchidaceae and Campanulaceae, etc., can realize stable virus elimination and propagation effect, significantly improve the virus-free cloning efficiency and seedling quality, and meet the green production demand.

The application provides the technical field of marine fishery propagation, and provides a method and device for evaluating the release and propagation effect of Portunus trituberculatus and electronic equipment, wherein the evaluation method comprises the following steps: after release, based on the growth cycle of Portunus trituberculatus, dynamically obtaining body size parameter feature sequences corresponding to a plurality of preset growth nodes, habitat suitability index sequences and ecological capacity sequences; inputting the above sequences into a multi-branch time sequence feature extraction network to respectively extract body size parameter time sequence change features, habitat suitability index time sequence change features and ecological capacity time sequence change features; using a multi-head attention mechanism to fuse the body size parameter time sequence change features, the habitat suitability index time sequence change features and the ecological capacity time sequence change features to obtain attention fusion features; and inputting the attention fusion features into a pre-trained Portunus trituberculatus release and propagation effect evaluation model to obtain a Portunus trituberculatus release and propagation effect evaluation result.

The utility model provides a wine-making yeast making room and a yeast making system, and relates to the technical field of wine-making production, and the wine-making yeast making room comprises a room body and an adjusting layer, a first window body and a second window body are formed in the two opposite side walls in the room body. The adjusting layer is arranged in the room body and divides the room body into a first space and a second space. The first window body is located in the first space, the second window body is located in the second space, and the window opening direction of the first window body and the window opening direction of the second window body both face the end deviating from the adjusting layer. Heat, moisture and oxygen are adjusted and exchanged between the first space and the second space through the adjusting layer, the corresponding window opening directions of the first window body and the second window body are opposite to the direction of the adjusting layer, the situation that air is directly blown to the adjusting layer after the windows are opened is prevented, impact caused during yeast fermentation is reduced, and the fermentation efficiency is improved. And the starter propagation effect is improved.

The application relates to an analysis and directional propagation method of agricultural popular science information, which comprises the following steps: judging whether a directional propagation demand is triggered; if the directional propagation demand is triggered, determining target agricultural popular science information to be propagated and a propagation object; determining other objects related to the propagation object according to a relationship graph; and propagating the target agricultural popular science information to the propagation object and the other objects. The method provided by the application can actively determine a propagation object of agricultural popular science information according to a relationship graph, and propagate the agricultural popular science information to the propagation object, so that active propagation of the agricultural popular science information is realized, the propagation range is expanded, and the propagation effect is improved.

The utility model relates to the technical field of layering propagation for fruit planting, in particular to a layering propagation device for fruit planting, which comprises a first layering sleeve and a second layering sleeve hinged to the surface of the first layering sleeve. The irrigation mechanism comprises a water storage barrel, the bottom end of the water storage barrel is communicated with two guide pipes, the lower ends of the surfaces of the guide pipes are communicated with dripping pipes, and the top end of the water storage barrel is communicated with a water receiving pipe; according to the device, water is uniformly dropwise added into soil around a first layering sleeve and a second layering sleeve through a water storage barrel, a guide pipe and a dropwise adding pipe, and compared with an existing mode that humidification on the soil around the layering propagation device is not uniform, the mode has the advantages that the soil around the layering propagation device is uniformly humidified, so that the layering propagation effect is guaranteed, and the layering propagation efficiency is improved. Through the floating ring and the observation rod, the water level in the water storage barrel is measured, and planting personnel can conveniently judge whether water is added into the water storage barrel or not.