9 results about "Table grape" patented technology

The application belongs to the technical field of food safety early warning, and particularly relates to a method for predicting heavy metal content in table grapes, comprising the following steps: using a partial least squares regression method to analyze the correlation between soil physicochemical indexes and grape heavy metal content, and retaining indexes with a VIP value greater than 1 as key variables; taking the key variables as input variables and grape detection results as output to construct a random forest regression model; training the random forest regression model through repeated execution of a sampling and training process to obtain a prediction model of heavy metals in grapes; and predicting the heavy metal content in table grapes according to the generated prediction model of heavy metals in grapes.

The invention relates to the technical field of agricultural nondestructive testing, and provides a method, a system, equipment and a medium for detecting the internal quality of picked table grapes, and the method comprises the following steps: S1, collecting multi-modal data of the table grapes, and carrying out preliminary preprocessing; the multi-modal data comprises spectral data and RGB image data; s2, constructing a basic state space model, and realizing primary processing and fusion of multi-modal features; s3, improving the basic state space model, and constructing an improved state space model with closed-loop optimization; and S4, inputting the spectral data and the RGB image data into the improved state space model to obtain detection data of the internal quality of the picked table grapes. According to the scheme, the detection precision of the internal quality of the table grapes in a complex scene can be effectively improved, cross-modal fusion high efficiency and edge deployment robustness are achieved, and a technical foundation is laid for intelligent grading, postharvest quality control and automatic sorting production line application of the table grapes.

The invention relates to the technical field of agricultural product preservation and logistics packaging, and provides quantitative packaging suitable for table grape e-commerce logistics and application of the quantitative packaging. According to the quantitative e-commerce package, an upper paper pulp mold and a lower paper pulp mold are fixed together through convex-concave buckles, and the paper pulp molds are fixed by covering a paper pulp mold base with a viscoelastic plastic film. Fresh table grapes with a preset number are placed in the concave parts of the viscoelastic plastic films above the fruit pits of the paper pulp molds, and after the upper paper pulp mold and the lower paper pulp mold are fixed through the convex-concave buckles, the plastic films around the grapes can be elastically deformed under the top of the grapes, soft wrapping pressure is formed on the grapes, and the grapes are suspended and fixed in the middle of the fruit pits. According to the packaging structure, quantitative packaging is achieved by adjusting the number and depth of the fruit nests in the paper pulp mold and the depth of the concave part of the plastic film. The visco-elastic plastic film and the paper pulp mold form a suspension fixing system through a specific structure, the damage rate and the shattering rate of fruits in E-commerce logistics can be reduced, the market acceptability of commodities is kept, and the grape E-commerce logistics package is suitable for regions with different altitudes.

The invention discloses a table grape shed frame horizontal leaf curtain new shoot mechanical pruning device, and belongs to the technical field of agricultural planting, the table grape shed frame horizontal leaf curtain new shoot mechanical pruning device comprises two transverse guide rails arranged in parallel, a sliding block is slidably connected in the transverse guide rails, the top surface of the sliding block is in transmission connection with a pruning mechanism, and multiple groups of longitudinal guide rails are fixedly connected between the two transverse guide rails at equal intervals; the trimming mechanism comprises a first connecting base in transmission connection with the sliding block, a first cavity is formed in the first connecting base, a trimming part is arranged in the first cavity, wheel sets are installed on the two sides of the first connecting base respectively, a first sliding groove is formed in the longitudinal guide rail, a second sliding groove is formed in the side, close to the longitudinal guide rail, of the transverse guide rail, and a driving part is arranged in the first connecting base. The transverse guide rail and longitudinal rail system breaks through the movement limitation of a steel wire mesh on the mechanical arm, full-coverage operation of equipment under complex steel wire layout is achieved, the coverage range is effectively widened, and the problem that traditional equipment cannot conduct cross-column operation is solved.

The application discloses a kind of fresh grape variety recommendation method, system, equipment and storage medium based on knowledge graph belonging to intelligent recommendation technical field.It includes the following steps: collecting the attribute and variety preference data of fresh grape customer consumption behavior;According to attribute and variety, the knowledge graph of fresh grape field is constructed;According to the knowledge graph, the fresh grape customer variety recommendation model is established;The fresh grape customer variety recommendation model is trained, and the variety recommendation list of fresh grape customer is generated.The application solves the problem of over-smoothing and gradient vanishing that easily occurs in deep propagation of graph neural network, can prevent important information loss, and significantly improves the accuracy of fresh grape recommendation result.

The invention belongs to the technical field of gene engineering, and discloses an application of a grape VvPMEI8 gene in delaying fruit softening, and the CDS sequence of the grape VvPMEI8 gene is as shown in SEQ ID NO. 1. The molecular mechanism of grape fruit softening is clarified from the molecular level, a direction is provided for breeding storage and transportation-resistant grape varieties, the shelf life of table grapes is prolonged, loss is reduced for farmers, and healthy development of the grape industry is promoted.

For wine grapes, pruning and shaping account for one-third of the total working time, and there are significant differences between peak and off-peak seasons, making it a challenge to secure peak labor. For table grapes (especially large-berry varieties), cluster formation and harvesting account for more than half of the total working time, requiring workers to keep their arms raised, resulting in poor work efficiency and the need to constantly look upwards. This invention provides a grape pruning method that improves work efficiency. [Solution] Multiple support posts are erected in the direction of the furrow, and the tops of each are connected with horizontal downpipes. A V-shaped corrugated roof rain cover is installed so that rainwater flows into it. A rain cover is created by connecting the ground side of the bottom of the corrugated roof to the horizontal downpipes at regular intervals with wires in the direction of the furrow. Seedlings are planted directly below the valleys of the V-shaped roof. The growing shoots are extended in a straight line in the direction of the furrow directly below the horizontal downpipes to become the main branches. When new shoots sprout from both sides, the grapes will try to grow upwards due to their nature and will hit the corrugated roof. However, if they try to grow further they will reach the nearest ridge, and thereafter they will be pruned autonomously along the ridge.

The invention belongs to the technical field of food safety early warning, and particularly relates to a method for predicting the content of phthalate in table grapes. Comprising the following steps: detecting a plurality of physicochemical indexes of soil and the phthalate content of grapes to obtain an acquisition data set, the plurality of physicochemical indexes being pH, organic matters, cation exchange capacity, total nitrogen and the phthalate content; dividing the collected data set into a test set and a training set; training the basic random forest model to obtain a first prediction model for predicting grapes through the plurality of physicochemical indexes; and analyzing the importance of the plurality of physicochemical indexes, determining a new feature subset, and training the first prediction model by using the feature subset as input to obtain a final prediction model. By analyzing the PAEs content and physicochemical properties in the grape rhizosphere soil, the PAEs content of the grape fruits can be predicted, and technical support is provided for grape quality safety monitoring and risk prevention and control.

The application discloses a reagent, a method and application for reducing the astringency of grape fruits, wherein the reagent comprises strigolactone, brassinolide and melatonin. It is found that strigolactone can significantly reduce the astringency of grape fruits at a concentration of 1-3 μmol / L, with a maximum reduction of 50.59%, and does not affect the coloring of the fruits; low-concentration brassinolide (0.1-0.6 mg / L) can reduce the astringency while increasing the contents of total phenols and anthocyanins, and synergistically promote the coloring; and melatonin has astringency-reducing effect at a concentration of 5-50 μmol / L. Transcriptome analysis shows that strigolactone blocks tannin synthesis by inhibiting the expression of DFR and CCR genes, and brassinolide remodels the metabolic flow to the anthocyanin branch through BZR1. The application provides an efficient and safe technical means for the precise improvement of the flavor quality of table grapes.