380 results about "White cabbage" patented technology

The invention provides a Chinese cabbage clubroot susceptibility related gene BrSWEET14a, a construction method and application, belongs to the technical field of plant genetic engineering, and particularly relates to a Chinese cabbage clubroot susceptibility related gene BrSWEET14a. The CDS sequence of the Chinese cabbage BrSWEET14a is as shown in SEQ ID No. 1 (sequence identifier number 1). The gene is transformed into Col-type arabidopsis thaliana through an agrobacterium flower immersion transformation method, a BrSWEET14a heterologous expression arabidopsis thaliana strain is obtained, and the result shows that T-DNA insertion mutant of the BrSWEET14a homologous gene Atsweet14 is more resistant to clubroot than that of the Col-type arabidopsis thaliana, and heterologous expression of Chinese cabbage BrSWEET14a leads to reduction of disease resistance of arabidopsis thaliana to plasmodiophora brassicae. Therefore, the Chinese cabbage BrSWEET14a is closely related to the clubroot disease, and the gene and the homologous gene of the gene in other cruciferous plants can be applied to breeding of the cruciferous plants and other horticultural plants and have a good application prospect.

The utility model relates to the technical field of agricultural mechanical equipment, in particular to a small Chinese cabbage harvester which is internally provided with a cutting component, a conveying component, a storage assembly and a traveling assembly, the two ends of the conveying component are connected with the cutting component and the storage assembly respectively, and the traveling assembly is installed below the storage assembly; the cutting component comprises a cutting assembly and a stirring assembly, the cutting assembly comprises a first fixing frame, two pulling shovels of the same structure and two cutting pieces of the same structure, one end of the first fixing frame is connected with the conveying component, and each cutting piece is connected with the other end of the first fixing frame; the middle part of each pulling shovel is fixedly mounted at the top end of one cutting piece; thus, when Chinese cabbages are harvested, the Chinese cabbages are pulled up through the pulling shovel, the roots of the Chinese cabbages are cut off through the cutting piece located below the pulling shovel, in the process, due to the fact that the cutting piece is located below the pulling shovel, the cutting piece does not make direct contact with the Chinese cabbages, the Chinese cabbages cannot be damaged, and the quality of the Chinese cabbages is improved.

The invention discloses an organic fertilizer for promoting plant growth and improving soil and a preparation method thereof, and belongs to the technical field of organic fertilizers. The organic fertilizer is prepared from the following raw materials: composted chicken manure, soybean meal, straw powder, sweet potato vines, humic acid, a compound microbial agent, rosmarinic acid and a stimulant. The compound microbial agent is prepared from madula angustifolia actinomycetes, pseudomonas stutzeri and bacillus velezensis, and the stimulant is a glucosamine sulfate solution. The rosmarinic acid, the glucosamine sulfate solution and the compound microbial agent are added into the organic fertilizer, the three components are compounded with the straw, the chicken manure and the like to form the organic fertilizer, and various substances have a synergistic effect, so that on one hand, the growth of Chinese cabbages is promoted, and the yield is increased; on the other hand, soil physicochemical properties are obviously improved.

A small intelligent Chinese cabbage harvester comprises a vehicle body, a harvesting mechanism is arranged at the front end of the vehicle body, a collecting box is arranged on the vehicle body, and the harvesting mechanism comprises a first conveying module, a soil loosening tool rest, a vegetable harvesting shifting rod module and a positioning module. The first conveying module and the vehicle body are obliquely assembled, the lower end of the first conveying module is located at the front end of the vehicle body, and the higher end of the first conveying module is higher than the collecting box. The soil loosening tool rest is fixedly assembled with the vehicle body, and the front end of the soil loosening tool rest exceeds the lower end of the first conveying module. The number of the vegetable collecting shifting rod modules is two, and the two vegetable collecting shifting rod modules are located on the two sides of the first conveying module respectively. The positioning module is assembled and fixed to the vehicle body and used for positioning the positions of Chinese cabbages. Compared with the prior art, the method has the advantages that the method is suitable for small-scale planting in rural areas, and the mechanization level of small-field-mu agriculture can be improved. And the harvested Chinese cabbages have no damage on skins, and the shelf life is greatly prolonged.

The invention relates to the technical field of plant tissue culture, and provides a method for improving the embryo emergence rate of free microspores of non-heading Chinese cabbage by using 5-AzaC, and in the microspore culture stage, 5-AzaC with the concentration of 0.005-0.020 mg is added into a microspore culture medium. The invention designs a method for increasing the embryogenesis rate of free microspores of the non-heading Chinese cabbage by adding 5-AzaC into a microspore culture medium of the non-heading Chinese cabbage. According to the method, the embryogenesis rate of the free microspores of the non-heading Chinese cabbage can be remarkably improved, a non-heading Chinese cabbage microspore culture system is more easily established, the haploid breeding efficiency is improved, and the breeding process is accelerated.

The invention discloses a rapid evaluation method for heat resistance phenotypes of non-heading Chinese cabbages. The method comprises the following steps: step 1, performing standardized seedling culture under the conditions of day and night constant temperature of 22 DEG C / 18 DEG C, relative humidity of 60%, illumination for 16h / darkness for 8h and light intensity of 20000Lux; step 2, extreme high temperature stress treatment: the temperature is 49 + / -0.5 DEG C, the humidity is 60%-70%, the illumination intensity is 20000Lux, treatment is performed for 8 hours, and then culture is recovered; step 3, observing phenotypic indexes including survival rate S, leaf damage index D, plant height inhibition rate H and new leaf germination number N; 4, constructing a comprehensive evaluation model, and calculating a heat resistance index HI; 5, plant heat resistance phenotype rapid evaluation. According to the method, variety heat resistance accurate classification is achieved, professional instruments are not needed, the single cycle only needs 20 days, the supply pressure of non-heading Chinese cabbages in the high-temperature season is remarkably relieved, breeding standardization of stress-resistant varieties is promoted, and agricultural sustainable development is promoted.

The invention discloses a continuous cropping Chinese cabbage planting method based on a microbial agent and application, and belongs to the technical field of crop cultivation. According to the planting method, Chinese cabbage and garlic are intercropped according to the ratio of 1: 1, and a trichoderma harzianum agent is applied. Results show that the planting method can significantly increase the growth indexes such as the plant height, the root length, the leaf chlorophyll content and the soluble sugar content of the Chinese cabbage; the soluble protein content, the peroxidase activity, the superoxide dismutase activity and the malondialdehyde content of the Chinese cabbage leaves are obviously reduced. Meanwhile, the content of rapidly available phosphorus, rapidly available potassium, effective calcium and other substances in the soil can be increased; the activities of urease, catalase and alkaline phosphatase in the soil are also obviously improved. In addition, the number of fungi, bacteria and actinomycetes in the soil is also remarkably increased. Therefore, according to the planting method, the quality of continuous cropping soil can be improved, Chinese cabbage growth is promoted, and theoretical support is provided for healthy and sustainable development of the Chinese cabbage industry.

The utility model relates to a Chinese cabbage harvester which comprises a vehicle body, a cutter body and a roller device are arranged at the front end of the vehicle body, the roller device is arranged above the cutter body, the roller device comprises a middle shaft assembly and a plurality of shifting rod assembly units, and the two ends of the middle shaft assembly are rotationally connected to the vehicle body. The driving lever assembly units are arranged around the circumference of the middle shaft assembly in an array mode, the area between every two adjacent driving lever assembly units can contain Chinese cabbages to be harvested, and the driving lever assembly units rotate along with the middle shaft assembly and push the Chinese cabbages in the harvesting direction so as to cut the roots of the Chinese cabbages. A plurality of shifting rod assembly units can sequentially harvest a plurality of Chinese cabbages in one rotation period, so that the harvesting efficiency of the Chinese cabbages can be improved; according to the Chinese cabbage harvester, the two steps of separating Chinese cabbages from soil and removing the roots of the Chinese cabbages are completed at a time, and effective cutting of the roots of the Chinese cabbages is achieved; and meanwhile, Chinese cabbages can be conveyed to the rear of the cutter body after root cutting, and the Chinese cabbages are prevented from being stacked at the cutter body.

The utility model discloses a large-ridge double-row Chinese cabbage harvesting device, relates to the technical field of crop collection, solves the problems of low harvesting efficiency, time waste and labor waste of Chinese cabbages adopting a large-ridge double-row planting mode, and solves the harvesting problem of the Chinese cabbages adopting the large-ridge double-row planting mode. The unique clamping device can not damage and omit Chinese cabbages, under the condition that the planting distance is very small, it can be guaranteed that the clamped Chinese cabbages do not slide, the phenomenon of incorrect cutting or missing cutting caused by the fact that the Chinese cabbages slide due to stress during root cutting operation is avoided, the Chinese cabbage harvesting quality is guaranteed, root cutting is one of key links of the Chinese cabbage harvester, and the Chinese cabbage harvesting efficiency is greatly improved. The cutting quality directly affects the quality of Chinese cabbages and determines the overall operation effect of the Chinese cabbage harvester. The unique cutting device can ensure that the cutting surface of the disc cutter is always perpendicular to the root of the Chinese cabbage, effective cutting is finally achieved, and low-resistance and high-efficiency root cutting is achieved and plays a crucial role in subsequent links.

A Chinese cabbage leaf removing and harvesting integrated device comprises a fixed frame, an overall lifting mechanism, a cutting mechanism, a clamping lifting mechanism and a movable conveying mechanism. The integral lifting mechanism comprises symmetrically arranged first lead screw sliding tables, pressing rings and at least two supporting plates, the cutting mechanism comprises symmetrically arranged second lead screw sliding tables, groove guide wheels, cutting wires and return springs, one ends of the cutting wires are connected with the second lead screw sliding tables, the other ends of the cutting wires pass through the groove guide wheels, the clamping lifting mechanism is connected with the clamping lifting mechanism, and the clamping lifting mechanism is connected with the clamping lifting mechanism. Comprising a clamping device installed on the clamping lifting mechanism, the pressing ring is driven by a motor to descend, the clamping device clamps Chinese cabbages, the cutting mechanism cuts and leaves are removed, and conveying of the Chinese cabbages is achieved. The whole structure is compact, the mechanical size is small, an integrated leaf removing and harvesting process suitable for Chinese cabbages is designed according to the appearance characteristics and physical properties of the Chinese cabbages, and refined harvesting is conducted through root cutting and harvesting.

The invention provides a Chinese cabbage row-control harvester based on machine vision and a control method. The Chinese cabbage row-control harvester comprises a chassis, a row-control mechanism, a Chinese cabbage harvesting and conveying mechanism, a visual detection module, a motion control module and an edge calculation module. The Chinese cabbage harvesting and conveying mechanism is used for backwards conveying harvested Chinese cabbages; the Chinese cabbage harvesting and conveying mechanism is mounted on the chassis, and the row control mechanism is used for adjusting the Chinese cabbage harvesting and conveying mechanism for row control; the visual detection module is installed on a rack at the front end of the Chinese cabbage harvesting and conveying mechanism and used for collecting field images and transmitting the field images to the edge calculation module, and the edge calculation module is connected with the visual detection module and the motion control module; the edge calculation module processes the image acquired by the visual detection module to obtain offset data and outputs the offset data to the motion control module, and the motion control module controls the row control mechanism to adjust the Chinese cabbage harvesting and conveying mechanism to perform row control. By means of the two row control modes of active row control and chassis floating row control, the row control precision can be improved, and the row control efficiency can be improved.

The invention relates to the technical field of purification, in particular to Chinese cabbage moss allergy-free factor purification equipment which comprises an outer box, one side of the outer box is communicated with a feeding pipe, a self-cleaning filtering assembly capable of automatically scraping impurities attached to different side faces is arranged in the outer box, and the self-cleaning filtering assembly comprises a filtering cylinder rotationally connected with the side wall of the outer box; one side of the filter cartridge is communicated with a transverse pipe, the transverse pipe extends to the outside of the outer box, the feeding pipe penetrates through the transverse pipe, a scraping assembly is arranged in the filter cartridge, the scraping assembly is dragged to rise when the filter cartridge rotates and then slides down to conduct scraping, a driving assembly used for driving the transverse pipe and the filter cartridge to rotate is arranged on the outer box, and the scraping assembly comprises an arc-shaped plate in sliding connection with the inner wall of the filter cartridge; and a plurality of sliding plates are fixedly connected between the two arc-shaped plates. The technical problems that particles in Chinese cabbage moss juice of existing purification equipment are prone to blocking a filter screen, the amount of blocked Chinese cabbage moss particles is large, the cleaning difficulty is increased, and the process of cleaning the filter screen is time-consuming and labor-consuming are solved.

The utility model relates to a small Chinese cabbage seeder which comprises a ditching device, a seeding device, a soil covering device, a supporting device and a power device, the furrowing device is used for furrowing by using a plough, and the main part is the plough; the sowing device is used for sowing Chinese cabbage seeds and mainly comprises a seed storage bottle, a seed metering device, a base, a seeding slideway, a direct current motor, a transmission shaft and a coupler; the soil covering device covers a ditch with soil and mainly comprises a soil covering disc and a T-shaped connecting rod; the supporting device is used for supporting other devices and mainly comprises a right-angle steel frame, a bottom plate, a handrail, universal wheels, directional wheels, a driving shaft and a bearing seat. The power device provides power for advancing of the seeder and mainly comprises a direct current motor and a synchronous belt drive. According to the utility model, the integrated operation process of ditching, seeding and earthing is realized, the seeding precision and efficiency of pakchoi are improved, manpower and material resources are saved, and the pakchoi seeding machine has higher application value.

The utility model provides a novel Chinese cabbage digging trolley. The novel Chinese cabbage digging trolley comprises a frame, a driving unit, a transmission mechanism, a digging mechanism and a collecting device. The frame is made of aluminum profiles and steel materials, and the front end of the frame is provided with an open groove for containing the excavating mechanism. The digging mechanism forms a double-crank structure through cooperation of a first rotary disc, a second rotary disc and a tool rest so as to achieve rotation and telescopic movement of a tool bit, and digging and conveying of Chinese cabbages are completed. And stepless adjustment of the digging depth can be realized. The collecting device is of a double-layer net structure, and efficient buffering and collecting of Chinese cabbages are guaranteed. The digging efficiency can be remarkably improved, the labor intensity is reduced, the method adapts to complex terrains, the requirements of small farmers are met, and the wide application prospect is achieved.

The invention relates to the field of biology, in particular to a sheep waste compound bacterium fermented organic fertilizer which is obtained by fermenting compound bacteria, and the compound bacteria comprise any one of bacillus subtilis, lactic acid bacteria, saccharomyces cerevisiae and clostridium butyricum. The organic fertilizer has the following beneficial effects: (1) the organic fertilizer is fermented by using four microorganisms at the same time, so that the fermentation is more sufficient, and the content of free amino acid is relatively high; (2) the organic fertilizer contains four kinds of probiotics, can obviously inhibit diseases and insect pests, and actual planting of tomatoes and Chinese cabbages also proves this; and (3) the problems that the sheep slaughtering wastes pollute the environment and are discharged are solved, a high-quality organic fertilizer source can be provided for agricultural production, and the wastes are comprehensively recycled.

The present invention discloses an organic fertilizer for promoting plant growth and soil improvement and a preparation method thereof, and belongs to the technical field of organic fertilizers. The organic fertilizer comprises the following raw materials: decomposed chicken manure, soybean meal, straw powder, sweet potato vine, humic acid, composite microbial agent, rosmarinic acid, and a stimulant. The composite microbial agent is composed of Actinomyces millefolius, Pseudomonas stutzeri, and Bacillus velezensis, and the stimulant is a glucosamine sulfate solution. Rosmarinic acid, glucosamine sulfate solution, and composite microbial agent are added to the organic fertilizer of the present invention. These three components are compounded with straw, chicken manure, etc. to form an organic fertilizer. The synergistic effect of multiple substances promotes the growth of cabbage and increases yield on the one hand; on the other hand, it significantly improves the physical and chemical properties of the soil.

The carbon-based microbial fertilizer capable of effectively improving the Chinese cabbage planting soil environment, degrading pesticide residues, enhancing the disease resistance of Chinese cabbages and increasing the yield of the Chinese cabbages is prepared by combining the bacillus subtilis FM bacterial liquid and the biochar. Comprising the following steps: step 1, inoculating a bacillus subtilis FM strain into an NA liquid culture medium, and carrying out shaking culture on a shaking table at the constant temperature of 37 DEG C for 24 hours to obtain a strain fermentation solution; and step 2, sterilizing the biochar at 121 DEG C for 60 minutes. And adding the prepared bacterial liquid into sterilized biochar, respectively preparing 5kg of carbon-based biological fertilizer with the bacterial content of more than 3 * 10 < 8 > CFU. G <-1 >, adjusting the moisture content to 30%, putting into an incubator, and culturing at the constant temperature of 37 DEG C for 24 hours, thereby obtaining the carbon-based microbial fertilizer, wherein the carbon-based biological fertilizer has the bacterial content of more than 3 * 10 < 8 > CFU. G <-1 >.

The embodiment of the invention provides a Chinese cabbage pollen abortion rate determination method and device, equipment and a storage medium, and relates to the technical field of artificial intelligence. The method comprises the following steps: acquiring a to-be-detected Chinese cabbage pollen picture; inputting the Chinese cabbage pollen picture into a deep learning target detection model for processing to obtain a predicted pollen frame and a pollen category corresponding to each pollen grain in the Chinese cabbage pollen picture; calculating the number of fertile frames and the number of non-fertile frames according to the predicted pollen frames and the pollen types, and obtaining the abortion rate of the Chinese cabbage pollen according to the number of the fertile frames and the number of the non-fertile frames. The method has better generalization ability and robustness based on a deep learning target detection model, and is used for achieving the technical effect of improving the accuracy and reliability of pollen abortion rate detection.

The invention discloses a gene BrRCO for forward regulation and control of Chinese cabbage leaf margin cracking and application thereof, and belongs to the field of plant molecular biology and plant genetic engineering. The nucleotide sequence of the gene is as shown in SEQ ID NO. 1, and the coded amino acid sequence is as shown in SEQ ID NO. 2. Through a gene editing means, the BrRCO gene of the leaf-split cabbage is knocked out, and the leaf margin split of the mutant plant disappears; the BrRCO gene is introduced into the round-leaf Chinese cabbage, and the leaf margin of the mutant plant is split and carved. The Chinese cabbage BrRCO gene provided by the invention has a definite function in regulating and controlling leaf margin cleavage of the Chinese cabbage, lays a foundation for further cultivating, screening or constructing leaf cleavage type Chinese cabbage varieties, and provides a theoretical support for molecular breeding and improvement of the adaptability of such crop varieties.

The invention discloses a strain NJSH56 for promoting plant growth and application thereof, the strain NJSH56 is identified as bacillus pumilus, the strain NJSH56 is preserved in China General Microbiological Culture Collection Center (CGMCC), the preservation time is November 14, 2024, and the strain preservation number is CGMCC NO.32614. The strain NJSH56 can promote plant growth. The dendrobium officinale endophytic growth-promoting strain NJSH56 for promoting plant growth is obtained through separation and screening, growth of dendrobium officinale tissue culture seedlings can be effectively promoted, and the fresh weight, the rooting number and the leaf number are increased; greenhouse tests show that the number of new buds of dendrobium officinale plants in a strain NJSH56 treatment group reaches 4.67 and is obviously higher than that of a control group; meanwhile, the NJSH56 is used for treating the non-host plant Chinese cabbage, so that the growth of the overground part of the Chinese cabbage can be remarkably promoted, and the biomass accumulation of the Chinese cabbage is improved.

The utility model relates to an automatic bundling and harvesting device for Chinese cabbages, which comprises a rack, driving motors, driving wheels, a power supply, a grain lifting rod, a clamping mechanism, a root cutting mechanism, a bundling mechanism, a plectrum mechanism and a shearing mechanism, and is characterized in that the driving motors are mounted on two sides of the bottom of the rack, and the driving wheels are fixedly connected with output shafts of the driving motors; the power supply is mounted on the rack and positioned at the upper part of the driving motor; the grain lifting rods are installed at the front ends of the two sides in a dragon gate opening of the rack. The clamping mechanism is installed in the middle of the two sides in a gantry opening of the machine frame. The root cutting mechanism is installed on the middle sections of the two sides of the bottom of the rack. The bundling mechanism is installed on the middle section of the top of the rack. The plectrum mechanism is mounted at the middle section of the top of the rack; the shearing mechanism is installed at the rear end of the right side in the gantry opening of the machine frame. The harvesting device can complete harvesting and bundling operation of Chinese cabbages, and automatic harvesting operation of the Chinese cabbages is achieved.

The invention is suitable for the technical field of pesticide residue detection, and provides a method for distinguishing and detecting pesticide based on copper-platinum bimetallic nano-enzyme. According to the method, a colorimetric sensing array with three sensing channels is constructed by synthesizing a copper-platinum bimetallic nano-enzyme (CuPtNPs) with oxidase-like activity, laccase-like activity and superoxide dismutase-like activity. A fingerprint spectrum is obtained based on specific effects of different pesticides and enzyme-like activities, and qualitative distinguishing and quantitative detection of various pesticides are realized by combining a machine algorithm. According to the method, nine pesticide residues can be measured at a time, six of the nine pesticide residues can be quantitatively analyzed, and the problem that a traditional method only can be used for single detection is solved. A strategy of constructing three channels based on a single nano-enzyme receptor CuPtNPs has the remarkable advantages of simple synthesis process, convenient operation flow and low detection cost, is good in applicability in actual agricultural product samples such as Chinese cabbages and apples, and provides an efficient solution for high-throughput detection of pesticide residues.

The utility model relates to the technical field of agricultural planting, and provides a Chinese cabbage harvesting and planting all-in-one machine which comprises a fixing support, and the outer side wall of the fixing support is rotationally connected with connecting wheels. The guide cutting mechanism is arranged on the outer side wall of the top end of the fixed bracket; the planting mechanism is arranged at the position, close to the bottom end, of the middle of the fixing support; the soil returning mechanism is arranged at the bottom end of the outer side wall of the fixing support, the guiding cutting mechanism comprises a connecting frame, the connecting frame is fixedly connected to the outer side wall of the fixing support, a chain wheel is installed at the top end of the connecting frame, the output end of the chain wheel is fixedly connected with a gear, and the outer side wall of the gear is in meshed connection with a chain; through the arrangement of the guide cutting mechanism, Chinese cabbages and other crops can be rapidly centralized and guided out of soil, carried soil is shaken off through a wave belt, the carried soil is recycled into a storage box, the structure is simple, and operation such as drawing is not needed.

The invention belongs to the field of botanical fungicide preparation, and particularly relates to a winter Chinese cabbage fungicide and a preparation method thereof. A potassium hydroxide solution is fully adsorbed by a prepared porous matrix through an esterification cross-linking reaction, an obtained efficient sterilization nanoparticle mixed viscous solution is extracted and concentrated to prepare a sterilization antiviral natural extract, and the prepared efficient sterilization suspension can effectively prevent and treat winter cabbage diseases; after polydimethylsiloxane and propylene glycol are mixed and emulsified, the disease-preventing and resistance-improving powder obtained through freeze drying is mixed in a formed breathable emulsion, and the prepared disease-preventing and resistance-improving composition can enable the Chinese cabbages in winter to maintain disease resistance for a long time; the mixture for promoting plant growth is uniformly mixed with the efficient sterilization component, and the prepared winter Chinese cabbage bactericide can efficiently prevent and treat diseases caused by pathogenic microorganisms, improves the disease resistance of plants, has biocompatibility and does not damage ecological balance.

The invention belongs to the technical field of microorganisms, and particularly relates to pseudomonas monteilii psm006 and application thereof. The pseudomonas monteilii psm006 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on January 3, 2025, the address of the pseudomonas monteilii psm006 is No.3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number of the pseudomonas monteilii psm006 is CGMCC NO.33294. The invention provides the pseudomonas monteilii psm006, the pseudomonas monteilii psm006 can survive in a certain saline-alkaline environment, has good silicate dissolving capacity and certain phosphorus dissolving and nitrogen fixing capacity, and in addition, the pseudomonas monteilii psm006 can secrete auxin and the like to improve the germination rate of Chinese cabbage seeds in the saline-alkaline environment.

The invention discloses a composite stable moringa oleifera polysaccharide cadmium-resistant preparation as well as a preparation method and application thereof, and relates to the technical field of cadmium-resistant preparations. The cadmium blocking preparation is composed of moringa oleifera polysaccharide, a compound stabilizer and a phosphate buffer solution, the compound stabilizer is composed of sodium alginate and nano silicon dioxide according to the mass ratio of 1: (1.0-1.5), and the pH value of the preparation is 6.0-7.0. The moringa oleifera polysaccharide is applied to cadmium prevention and control of Chinese cabbages in alkaline cadmium-polluted soil (pH 6.5-7.5), and accurate regulation and control are achieved in a rhizosphere irrigation mode. The sodium alginate-nano silicon dioxide composite stabilizer system synergistically exerts the dual functions of dispersion stability and slow release protection, and ensures that the moringa oleifera polysaccharide keeps activity in the soil environment. The preparation has the advantages of being small in dosage, low in cost, easy and convenient to operate, environmentally friendly and the like, a scientific and feasible technical scheme is provided for safe utilization of cadmium-polluted farmland in the alkaline soil area, and the preparation has important application value and popularization prospects.

The invention provides a digital breeding-oriented Chinese cabbage leaf cell automatic segmentation and phenotype measurement system and method, and relates to the technical field of plant phenotype analysis. According to the system, joint coding of cell contours and tissue semantics is achieved through a feature extraction sub-network, scale alignment, global feature convergence and feature re-calibration, and pixel-level cell instance masks and tissue categories are output at the same time through mask decoding and category decoding. In combination with multi-tissue phenotypic parameter classification, in-tissue phenotypic index summarization and structured output, cell-level and tissue-level automatic quantitative analysis of upper epidermis, lower epidermis, fence tissues, sponge tissues, vascular bundles and the like is realized, and the efficiency and precision of multi-tissue cell screening and phenotypic statistics are remarkably improved. The method solves the problems that in the prior art, high-precision automatic segmentation and systematic phenotypic measurement for multi-tissue cells of the cross section of the Chinese cabbage leaf are insufficient, and digital breeding decision making is difficult to directly serve.

The invention belongs to the field of biochemistry, and relates to a method for extracting gynura divaricata polysaccharide by using a hydrogen peroxide / ascorbic acid system. Comprising the following steps: adding deionized water, hydrogen peroxide and ascorbic acid into degreased gynura divaricata powder, and stirring and extracting in an oil bath; centrifuging and concentrating the obtained reaction solution, and carrying out alcohol precipitation on the obtained concentrated solution; and redissolving the obtained precipitate by using deionized water, dialyzing by using a dialysis bag with the molecular weight cut-off of 3500 Da, and then concentrating and freeze-drying to obtain the gynura divaricata crude polysaccharide GDP-H. The molecular weight of the gynura divaricata crude polysaccharide GDP-H is greatly reduced, and the biological activity is also remarkably improved.

The present invention discloses the application of coumarin-3-carboxylic acid in preventing and treating plant bacterial diseases. The coumarin-3-carboxylic acid provided by the present invention has a significant inhibitory effect on plant bacterial diseases. The plant bacterial diseases are oryzae bacterial leaf blight, oryzae bacterial leaf streak, citrus canker, cantaloupe bacterial fruit spot, tomato bacterial wilt, strawberry bacterial angular leaf spot, cabbage black rot, cabbage soft rot, potato soft rot, mango bacterial angular leaf spot, cassava bacterial wilt, cucumber bacterial angular leaf spot, kiwifruit canker and banana bacterial soft rot. The coumarin-3-carboxylic acid provided by the present invention has protective and therapeutic effects on melon bacterial fruit spot.