32 results about "Cold damage" patented technology

The invention provides an edible coating fresh-keeping liquid suitable for low-temperature refrigeration of harvested tropical fruits and a storage and fresh-keeping method. The low-temperature cold storage edible film coating fresh-keeping liquid is soybean oil. When bananas or mangoes are coated with the edible coating liquid for low-temperature refrigeration, the occurrence of fruits under low-temperature refrigeration can be effectively inhibited, and the sensory quality and shelf life of the fruits can be maintained. Bananas or mangoes are subjected to soybean oil coating treatment, so that the relative conductivity of fruit tissues can be effectively reduced, and the integrity of fruit cell membranes is maintained; according to the present invention, the production of H2O2, O2 <-> and MDA can be significantly reduced, the activity of POD can be inhibited, and the activity of PPO, SOD and CAT can be enhanced so as to activate the anti-oxidation defense system of fruits, reduce the oxidative damage caused by cold injury, and enhance the accumulation of osmotic regulation substances; the content of antioxidant carotenoid can be increased, so that the stress resistance of the fruits is improved, and the cold injury of the fruits in the low-temperature storage process is reduced.

The application discloses a traditional Chinese medicine composition for treating common cold by simultaneously resolving exterior and interior, and belongs to the technical field of traditional Chinese medicine compound. The application provides two groups of traditional Chinese medicine compositions which are used according to syndrome differentiation: the composition for treating wind-cold common cold is based on Xiaolingtang and Wuling San, and is combined with apricot kernel, purple yam, forsythia flower and the like; the composition for treating wind-heat common cold is based on Dalingtang, Wuling San and Houpu Dahuang Tang, and is combined with apricot kernel, radix trichosanthis and the like. According to the theory of cold damage of six meridians, the application divides the source of common cold into wind-cold and wind-heat, establishes the treatment method of simultaneously resolving exterior and interior, resolves exterior pathogen, regulates triple energizer and resolves internal pathogen, regulates the human body environment, and thus treats common cold. The application has the characteristics of simple and intuitive syndrome differentiation standard, reliable prescription combination, industrialized oral preparation, treatment of wind-cold common cold and wind-heat common cold, fast effect, wide indication and convenient use.

The utility model discloses a greenhouse bottom vent opening and closing device convenient to buffer, which relates to the technical field of agricultural engineering and comprises a wall body, a greenhouse frame, a buffer mechanism and an adjusting mechanism, the shed frame is fixedly arranged at the top of the wall body, and a cross rod is fixedly arranged at the top end of the wall body A wind-resistant buffer mechanism is fixedly arranged on the inner wall of the wall body, and an adjusting mechanism used for manually adjusting opening and closing is installed at the bottom of the transverse rod. Through linkage of the clockwork spring and the wind-up roller, automatic wind-up and tension stabilization of the buffer film are achieved, wind impact is reduced, and the film body is prevented from being damaged. The fixing support and the clamp spring simplify operation, the buffer film directionally guides air to the position above crops, the risk of cold air direct irrigation is reduced, and humiture sudden change and cold damage are reduced.

The utility model discloses a fruit and vegetable storage box and refrigeration equipment, the fruit and vegetable storage box comprises a box body and a ripening device, the box body is provided with a ripening space, the temperature of the ripening space is a first temperature, and the first temperature is greater than or equal to 12 DEG C and less than or equal to 15 DEG C; the ripening device is arranged in the ripening space, and the ripening device is configured to perform ripening on fruits and vegetables in the ripening space in a physical mode. The ripening device provided by the utility model performs ripening in a physical mode, does not need the limitation of high-temperature conditions, can slow down nutrition consumption and moisture loss of fruits and vegetables by setting the temperature of the ripening space to be between 12 DEG C and 15 DEG C in a low-temperature environment, is favorable for maintaining the freshness of the fruits and vegetables, is not too low in temperature, and is convenient to use. The cold damage phenomenon of the fruits and vegetables can be avoided, so that low temperature is combined with physical ripening, the maturity of the fruits and vegetables can be improved, and meanwhile the quality of the fruits and vegetables can be guaranteed.

The application discloses application of a peach fruit hexokinase PpHXK3 gene in preparation of a plant cold-resistant product, and is characterized in that the nucleotide sequence is shown as SEQ ID NO. 1, and the amino acid sequence is shown as SEQ ID NO. 2; a cloning method of PpHXK3 comprises the following steps: extracting total RNA of peach fruit and reversely transcribing the total RNA into cDNA as a template, and designing upper and lower amplification primers according to a gene sequence of PpHXK3; finally, a PpHXK3 gene amplification product is obtained through PCR amplification; the application of PpHXK3 in preparation of polygalacturonase PpPG21 inhibitors and / or polygalacturonase PpPG23 inhibitors, and the application of PpHXK3 in preparation of peach fruit cold-resistant products and heterologous plant cold-resistant products are also provided; and the advantages are that the decomposition of pectin is reduced, the integrity of a cell wall structure and the hardness of a fruit are maintained, the fruit has higher cold resistance, and cold damage in a storage and transportation process is reduced.

The utility model discloses a water heating and cooling device suitable for greenhouse irrigation. The heating and cooling device comprises a heat exchanger, a secondary pure water side water inlet pipeline, a secondary pure water side water outlet pipeline, a primary hot water side water inlet pipeline, a primary ice water side water inlet pipeline, a primary hot water side water outlet pipeline and a primary ice water side water outlet pipeline; the device can adapt to temperature changes in different seasons, especially in regions with high temperature in summer and autumn and low temperature in winter, the temperature of the heat exchange medium is adjusted, the irrigation water temperature is kept stable, and therefore the influence of environment changes on plant growth is reduced; the fluctuation of the temperature of irrigation water is reduced through accurate temperature control, and physiological pressure, such as heat stress or cold damage, caused by temperature mutation to plants is avoided; by controlling the temperature of the irrigation water, the problem of water evaporation or insufficient water absorption of plants caused by uncomfortable temperature can be reduced, so that the utilization rate of the irrigation water is improved.

The present application belongs to the technical field of oil production matching technology, and discloses a high-coagulation heavy oil reservoir cold damage evaluation method, which utilizes physical simulation and numerical simulation methods to analyze the reservoir cold damage degree, reversibility, the minimum temperature for avoiding cold damage and the reservoir temperature recovery time from quantitative and qualitative aspects, wherein the physical simulation firstly determines the crude oil properties through the crude oil viscosity-temperature and wax precipitation experiments, then utilizes the core to carry out breakthrough pressure experiments to determine the occurrence temperature of the reservoir cold damage, startup pressure experiments to determine the minimum temperature for avoiding damage, relative permeability experiments to determine the influence degree of the cold damage on the reservoir percolation capacity, mercury injection experiments to analyze the influence of the cold damage on the reservoir pore structure, and two-dimensional nuclear magnetic experiments and laser confocal experiments to determine whether the cold damage is reversible and the reversible temperature; the numerical simulation is utilized to analyze the recovery time required for different liquid amounts and different temperature working liquids to enter the formation, so as to finally achieve the purposes of reducing the development cost of the high-coagulation oil reservoir and improving the development effect.

The invention provides a plant cold-proof, stress-resistant and anti-freezing method for enhancing plant respiratory conduction efficiency, and relates to the technical field of plant cultivation and stress-resistant protection. According to the method, a composite anti-freezing agent containing auxin, a conduction accelerant, a stress-resistant inducer, an osmotic regulator and a nutritional supplement is prepared and sprayed to the whole plant 24-48 hours before low-temperature freezing injury occurs, the respiration and nutrient conduction efficiency of the plant are enhanced, dry matter is quickly accumulated to reduce the freezing point of cells, and a stress-resistant defense system is started. The core innovation lies in multi-component synergistic adaptation, precise spraying opportunity control and broad-spectrum crop adaptability, and the problems that a traditional method is limited in anti-freezing effect and prone to causing physiological unbalance of plants are solved. Practice verification shows that the method can improve the cold resistance of the plants by 2-5 DEG C and reduce the freezing damage loss rate by more than 60%, is suitable for various plants such as field crops, garden crops and commercial crops, is simple and convenient to operate and controllable in cost, and provides effective technical support for plant cultivation in an extremely low-temperature environment.

The invention discloses a fresh-keeping method for relieving banana cold damage through constant magnetic field treatment. The fresh-keeping method comprises the following steps: step 1, material selection and pretreatment; step 2, constant magnetic field treatment; and step 3, packaging and storing. 4, evaluating the effect; a constant magnetic field physical treatment mode is adopted, chemical agents do not need to be added, harmful substance residues on the surfaces of fruits and vegetables are avoided, and the food safety requirement is met; one-time constant magnetic field treatment is only carried out at the initial stage of storage, the continuous treatment time is not longer than 12 hours, and compared with an intermittent continuous treatment mode or a whole-process continuous treatment mode in the prior art, energy consumption is remarkably reduced; the cold injury index of bananas in the low-temperature storage period can be effectively reduced, the peel brightness is improved, cold injury symptoms are delayed, the appearance and quality of fruits are maintained, and the cold injury relieving effect is optimal when the bananas are treated by a 5mT-intensity constant magnetic field for 12 hours or treated by the 5mT-intensity constant magnetic field for 8 hours.

The application discloses application of a GhSPX9 gene in improving cold resistance of cotton and belongs to the technical field of plant molecular biology. The nucleotide sequence of the GhSPX9 gene is shown in SEQ ID No. 1 or a degenerate sequence for coding the same protein as the sequence shown in SEQ ID No. 1. Overexpression of the GhSPX9 gene in cotton can improve the cold resistance of the cotton. The application firstly explicitly defines the functional role of the gene GhSPX9 in the cold resistance of cotton, and provides a target gene for enhancing the cold resistance of cotton. The application finds through various tests that silencing of the GhSPX9 gene can reduce the cold resistance of the plant; overexpression of the GhSPX9 gene can enhance the cold resistance of the plant, and the result shows that the GhSPX9 plays a positive regulation role in the cold resistance of cotton. The GhSPX9 gene can be applied to preventing and treating cold damage of cotton, and can be specifically applied to genetic improvement or molecular breeding of enhancing the cold resistance of cotton, such as cultivating a cold-resistant cotton variety.

The invention belongs to the technical field of food fresh-keeping bags, and particularly relates to and discloses a food fresh-keeping bag as well as a preparation process and application thereof. The fresh-keeping bag comprises fresh-keeping including self-hydrogen-production composite particle fresh-keeping, and the fresh-keeping bag structurally comprises a hydrogen release layer and a contact layer; the method comprises the following steps: putting pretreated chilled fresh meat which is not packaged by a film and a pre-packaged fresh-keeping bag into an aluminum film packaging bag, vacuumizing, filling a small amount of hydrogen, sealing, refrigerating, storing and transporting. During storage, water is evaporated on the surface of the food, and water molecules are released to trigger the self-hydrogen-production composite particles to continuously release hydrogen, so that the freezing and fresh-keeping effects on the chilled meat are realized. According to the invention, the self-hydrogen-producing composite particles are used as a continuous hydrogen supply source and are well cooperated with the charged hydrogen, so that the system has high gas balance self-adjusting ability, and the dynamic stable hydrogen concentration in the package continuously promotes heat conduction, enhances oxidation resistance, reduces cold damage and reduces decay speed, and maintains the freshness steady state of chilled meat for a long time. The preservation method can be widely applied to various chilled fresh meat foods.

The utility model discloses a ventilation structure for facility agriculture glass greenhouse, include: edge frame, top frame, first ventilation group, second ventilation group and third ventilation group, top frame installs at the top of edge frame, first ventilation group and second ventilation group all install below top frame, wherein, first ventilation group is horizontal ventilation structure, and second ventilation group is vertical ventilation structure, third ventilation group installs at the side of edge frame. First ventilation group horizontal air supply covers greenhouse middle part horizontal area, and second ventilation group vertical air supply drives up and down layer air exchange, and third ventilation group lateral air supply strengthens edge area ventilation, and the three cooperation makes greenhouse airflow evenness get promotion, thoroughly solves traditional ventilation middle part sultriness, edge cold damage problem, guarantees air temperature, humidity, carbon dioxide concentration whole area balance, reduces the incidence of disease and insect pests.

The invention discloses a rape cold-resistant gene BnaMYBL17 and application thereof, and belongs to the technical field of biology. The invention provides an application of a knockout BnaMYBL17 gene in improving the cold resistance of oilseed rape or cultivating oilseed rape with high cold resistance. According to the invention, a new gene BnaMYBL17 related to cold resistance is cloned from rape for the first time, and after the gene BnaMYBL17 provided by the invention is subjected to site-directed editing in the rape, a cold resistance identification result shows that the survival rate of a brassica napus strain with a knockout mutant of the gene BnaMYBL17 is remarkably higher than that of a wild type under cold injury treatment. The acquisition of the Bnamybl17 mutation system provides precious gene resources for the cultivation of cold-resistant varieties, and has important significance for analyzing the cold-resistant molecular mechanism of plants.

The invention discloses a GIS (Geographic Information System)-based rice low-temperature cold damage risk zoning method, which comprises the following steps: S1, acquiring basic data of a target rice planting area, the basic data comprising meteorological related data, farmland geographical environment related data and rice growth cycle related data; and S2, preprocessing the basic data, and constructing a standardized data set adapted to GIS spatial analysis through data cleaning, standardized processing and spatial matching operations. The invention relates to the technical field of agricultural meteorological disaster prevention and control. According to the rice low-temperature cold damage risk zoning method based on the GIS, by integrating meteorological data, farmland geographical environment data and rice growth cycle data and constructing a multi-dimensional disaster risk index, the occurrence risk of rice low-temperature cold damage can be accurately evaluated, a prediction result is dynamically corrected, and scientific and comprehensive risk evaluation is provided.

The application discloses application of molybdenum disulfide nanomaterial in crop cold damage regulation and belongs to the technical field of cold resistance agents. The molybdenum disulfide nanomaterial is dispersed in water to obtain a suspension; and then the suspension is sprayed on corn and soybean leaves, and the cold resistance of the corn and the soybean is regulated through the leaf surface spraying mode, so that the biomass of the cold-damaged corn and the cold-damaged soybean is increased, and the application prospect is excellent.

The invention relates to the technical field of plant cultivation, and particularly discloses a plant cold-resistant composition and a preparation method thereof.The plant cold-resistant composition is prepared from, by weight, 15-35 parts of willow bark natural extract, 5-10 parts of silicon source, 5-10 parts of molybdenum source, 5-10 parts of selenium source and 5-10 parts of water. The dosage of the silicon source is 1-5 parts by weight of SiO2, the dosage of the molybdenum source is 0.01-0.05 part by weight of Mo, the dosage of the selenium source is 0.01-0.05 part by weight of Se, and the balance is water. According to different types of crops, low-temperature cold damage can be effectively prevented, flexible blending can be performed according to element demand characteristics of different crops, and targeted cold resistance protection is achieved.

The invention discloses a GIS (Geographic Information System)-based rice low-temperature cold injury risk assessment method and system. The method comprises the following steps of 1, constructing rice physiological behavior time sequence data; 2, constructing a day and night behavior phase model; 3, mapping the rice physiological behavior time sequence data to a day and night behavior phase model, setting a biological clock drift judgment condition, and generating a biological clock drift signal when the condition is met; 4, constructing a fusion feature vector sequence; 5, inputting the fusion feature vector sequence into an improved TimesNet model, embedding a double-time-domain gating residual filtering mechanism, and outputting a rhythm anomaly feature vector; step 6, constructing a cold damage feature vector; and 7, analyzing the recovery conditions of the photosynthetic efficiency and the chlorophyll fluorescence, and outputting a cold damage risk grade layer. According to the method, the day and night behavior phase model and the improved TimesNet model are fused, and intelligent risk grading of rice cold damage is achieved.

The present application relates to a kind of irrigation farmland crop low temperature cold injury monitoring and diagnosis method, device, equipment and medium, comprising: collecting irrigation farmland multi-source data;Key indicators are calculated based on farmland multi-source data, wherein, key indicators include: land surface temperature LST, enhanced vegetation index EVI, sunlight-induced chlorophyll fluorescence SIF and solar declination delta;The key indicators calculated are calculated by the air temperature estimation model of pre-constructed irrigation farmland to obtain farmland daily average air temperature, and based on the low temperature cold injury determination standard of farmland crop, the monitoring and diagnosis of farmland crop low temperature cold injury are carried out.The present application can be based on the actual situation of irrigation farmland crop growth, utilize multi-source remote sensing data, consider the influence of surface temperature, crop growth, canopy physiology, solar radiation and other multi-factor, accurately estimate the air temperature of irrigation farmland, have strong operability, practicality is strong, it is easy to promote.

The invention discloses a fertilization method of a cold-resistant water-soluble fertilizer. The method comprises the following steps: applying a bio-organic fertilizer and a 15-15-15 ternary compound fertilizer as base fertilizers in a planting period; in the initial rosette stage, a water-soluble fertilizer A is applied through drip irrigation, and the water-soluble fertilizer A is composed of a liquid nitrogen fertilizer and cold-resistant functional carbohydrates; a water-soluble fertilizer B is applied through drip irrigation in the later stage of the rosette stage, and the water-soluble fertilizer B is composed of 18-8-30 + TE high-potassium water-soluble fertilizer and cold-resistant functional carbohydrates; and applying a 18-8-30 + TE high-potassium water-soluble fertilizer through drip irrigation at the initial stage of the heading stage. According to the method, through water and fertilizer integrated precise fertilization, cold-resistant carbohydrates are applied in batches in the key stage of the rosette stage, and preferably liquid nitrogen fertilizer and high-potassium formula fertilizer are matched, so that the remarkable effects that the nitrogen is reduced by 20-35%, the yield is increased by 35-45%, and the income is increased by 1000-1200 yuan per mu are achieved; and an efficient, economic and sustainable technical scheme is provided for the large-scale production of the heading lettuce in areas with frequent low-temperature cold damage.

The application relates to the technical field of agricultural planting equipment, and discloses a rice seed cultivation device and method. The rice seed cultivation device comprises a cultivation box body, multiple cultivation growth modules, a temperature regulation module and a control end; the multiple cultivation growth modules are arranged in the cultivation box body in a spaced manner from top to bottom, and the internal space of the cultivation box body is divided into multiple independent cultivation growth areas; the temperature regulation module comprises a main heating element arranged at the bottom of the cultivation box body, an auxiliary heating element and a temperature sensing element; the auxiliary heating element comprises a heating execution part and a driving execution part. Through the cooperative working mode of the movable auxiliary heating mechanism and the fixed main heating mechanism and the active regulation strategy based on the environmental temperature prediction, the most sensitive area can be cooperatively heated and intervened in advance through prediction before the actual temperature in the box drops below the threshold value caused by the sudden drop of the external environmental temperature, so that the seedling cold damage is effectively prevented.

The application discloses a kind of peach fruit preharvest spray preservative and its spraying method, characterized by the following raw materials and mass percentage composition: 2-8% of brown algae oligosaccharide, 0.05-0.2% of gamma-aminobutyric acid, 0.5-2% of capric acid triglyceride, 0.1-0.3% of glycerol, 1-3% of Tween-80, 0.2-1% of sodium carboxymethyl cellulose, and the balance is water, the above-mentioned peach fruit preharvest spray preservative is sprayed on peach fruit, and the method comprises the following steps: selecting peach trees with consistent tree age and growth vigor, starting at 90-110 days after peach fruit blossoming, spraying peach fruit every 3 days, and spraying peach fruit surface uniformly in 3 times until the surface of peach fruit is in a dripping state, which has the advantages of increasing the rate of marketable fruit of picked peach fruit, prolonging the storage period of peach fruit, reducing the rot rate of peach fruit stored at room temperature, reducing cold damage during low-temperature storage, and maintaining the quality and taste of the fruit.

The application discloses a cultivation method for realizing early harvesting after cold damage of bananas, and the method comprises the following steps: S1, determining whether cold damage management can be carried out, when the average air temperature is higher than 15 DEG C, cutting off the mother plant false stem and other suckers at 25-40 cm away from the ground, and uniformly spraying 200-600 mL of a pre-harvest agent around the mother plant corm; S2, spraying a pre-bud agent around the mother plant corm at 7-10 days after cutting, and covering the mother plant corm with soil, when the length of the sucker is 20-25 cm, selecting 1-2 suckers with consistent growth to be reserved; S3, water and fertilizer management; and S4, disease and pest control. Compared with the prior art, the application repairs the membrane system of the banana corm damaged due to cold damage by applying a pre-harvest agent, promotes the generation of suckers from the corm together with a pre-bud agent, reasonably applies water and fertilizer, and manages diseases and pests, so that the reserved suckers are accelerated to carry out vegetative growth and reproductive growth, so that at least 70% of bananas are harvested before November, the bananas are harvested earlier than other cold-damaged bananas, the yield is higher, and the bananas are realized to be marketed in a staggered manner.

The application discloses application of a GhZAT11 gene in improving cold resistance of cotton and belongs to the technical field of plant molecular biology. An amino acid sequence coded by the GhZAT11 gene is shown as SEQ ID No. 2. Overexpression of the GhZAT11 gene in cotton can improve the cold resistance of the cotton. The application firstly explicitly defines the functional role of the gene GhZAT11 in the cold resistance of cotton, and provides a target gene for enhancing the cold resistance of cotton. The application finds through various tests that silencing of the GhZAT11 gene can reduce the cold resistance of a plant, and overexpression of the GhZAT11 gene can enhance the cold resistance of the plant. The results show that the GhZAT11 gene plays a positive regulation role in the cold resistance of cotton. The GhZAT11 gene can be applied to preventing and treating cold damage of cotton, and can be specifically applied to genetic improvement or molecular breeding of the cold resistance of cotton, such as cultivating a cold-resistant cotton variety.

This invention relates to an auxiliary device for a dry hot rock cold damage fracture test. The technical solution adopted by this invention is: an auxiliary device for a dry hot rock cold damage fracture test, characterized in that: it has a base plate for placement; on the base plate, via a transport mechanism, is an injection mechanism for filling the edge of the gap between two samples with epoxy resin and sealing the gap; on both sides of the base plate where the samples are placed, there are water pipe installation mechanisms for embedding water pipes into the epoxy resin between the two samples. Thus, the transport mechanism drives the injection mechanism to move uniformly around the samples on the base plate, facilitating the uniform injection of epoxy resin into the edge of the gap between the two samples; the water pipe installation mechanisms facilitate the installation of two water pipes into the epoxy resin on both sides of the samples, one water pipe serving as an inlet pipe and the other as an outlet pipe, realizing water circulation between the samples and the outside environment.

The invention discloses a separated well washing and killing pipe column for a thermal production well and a using method and application of the separated well washing and killing pipe column, and relates to the technical field of thickened oil exploitation and thermal production. Comprising a thermosensitive packer used for achieving sealing in the injection-production process; the releasing tool is connected to the thermosensitive packer and used for achieving connection and separation of the thermosensitive packer and the steam injection heat insulation pipe; the ball throwing type ball seat is connected to the lower part of the thermosensitive packer; a through hole is formed in the bottom of the ball throwing type ball seat, and when the ball body is located on the through hole, releasing pressing separation and one-way flowing of liquid in a shaft are achieved. When steam injection of a steam huff and puff well is completed and the steam huff and puff well is shifted to an oil extraction stage, cold damage and potential pollution caused by well killing fluid to an oil layer can be effectively avoided by ingeniously utilizing matching of the ball body and the ball throwing type ball seat, and meanwhile the problem that a thermosensitive packer possibly cannot be smoothly unsealed in well washing operation is solved.

The present application relates to the field of plant trait identification method, and relates to a method for identifying cold tolerance of butterfly orchid through a real-time photosynthetic phenotype imaging system, a plurality of butterfly orchid varieties are selected for cold tolerance test, and 4 plants of each variety are selected for low-temperature cold damage treatment; the test butterfly orchid varieties are placed in a set environment, and are tested and treated in cooperation with a multi-environment regulation in-situ real-time photosynthetic phenotype imaging system, butterfly orchid flower information data are collected at four treatment time points respectively, and cold tolerance indexes of the butterfly orchid flowers are calculated; the PSII maximum photochemical efficiency is calculated according to the detected chlorophyll fluorescence data, and the butterfly orchid varieties to be rated are pre-screened based on a preset standard; the cold tolerance indexes of the butterfly orchid flower varieties screened in the previous step are calculated; and the butterfly orchid varieties with better cold tolerance are screened according to the cold tolerance evaluation results, so that rapid and continuous detection of the chlorophyll fluorescence of butterfly orchid leaves is realized, and the detection period is shortened.

The invention discloses a kiwi fruit fresh-keeping storehouse and a control method, and aims to solve the problems of cold injury and chemical fresh-keeping residue in traditional refrigeration and non-uniformity of an existing electric field technology. The fresh-keeping storehouse comprises a storehouse body, a kiwi fruit placing system, a low-temperature refrigerating system and a low-voltage electrostatic field generating device, and further comprises a multi-dimensional intelligent sensing system, a central control unit and a self-adaptive regulation and control execution module. The sensing system covers each area of the goods shelf through an integrated sensing unit, and synchronously detects the temperature and humidity, the ethylene concentration, the fruit hardness and the field intensity; the central control unit is internally provided with a multi-parameter coupling algorithm, a PID temperature control sub-algorithm, a field intensity regulation and control sub-algorithm and a prediction model, and a refrigeration and electrostatic field system is cooperatively scheduled; and the self-adaptive module realizes dehumidification, electric field partition correction and ethylene purification. According to the control method, a closed loop is formed through data acquisition, state evaluation, cooperative adjustment and dynamic feedback. The method is free of chemical residues, high in electric field uniformity and suitable for large-scale storage, the fresh-keeping period of kiwi fruits is effectively prolonged, and the intact fruit rate of the kiwi fruits is effectively increased.

The invention provides a refined economic forest fruit flowering phase low-temperature cold damage risk assessment early warning method and device, and relates to the technical field of disaster assessment, and the method comprises the steps: obtaining a multi-source historical data set corresponding to a research region, and planting economic forest fruits in the research region; preprocessing the multi-source historical data set to obtain a characteristic quantity matched with a forest fruit growth area and a forest fruit flowering phase of the economic forest fruit, and determining an event level corresponding to a low-temperature cold injury event occurring in the research area based on preprocessed historical single-station low-temperature cold injury event data; and based on the characteristic quantity of the economic forest fruit and the event level corresponding to the low-temperature cold injury event, training the neural network model to obtain a cold injury risk assessment and early warning model, the cold injury risk assessment and early warning model being used for performing assessment and early warning on the event level corresponding to the low-temperature cold injury event occurring in the forest fruit growth area in the forest fruit flowering phase. According to the invention, the precision degree and accuracy of low-temperature cold injury risk assessment early warning can be obviously improved.

The invention belongs to the technical field of biology, and particularly discloses application of a muskmelon CmPP2C4 gene in regulation and control of cold resistance of muskmelons, the nucleotide sequence of the muskmelon CmPP2C4 gene is shown as SEQ ID NO.1, a muskmelon CmPP2C4 gene silencing vector is constructed through virus-induced instantaneous silencing, the muskmelon CmPP2C4 gene is silenced in muskmelon seedling bodies, and the muskmelon CmPP2C4 gene can be used for regulating and controlling cold resistance of the muskmelons. The muskmelon CmPP2C4 silent plant capable of improving the tolerance to the cold injury stress is obtained. Compared with the prior art, the silent plant is subjected to 4 DEG C cold injury stress treatment, the cold resistance of the silent plant is further improved, the electrolyte permeability and the malondialdehyde content are remarkably lower than those of a control group, and the proline content and the soluble sugar content are remarkably higher than those of the control group; the determination of the contents of antioxidant enzymes (SOD, CAT and APX) and hydrogen peroxide (H2O2) shows that the antioxidant enzyme activity of a CmPP2C4 silent plant is more strongly induced, and the in-vivo H2O2 accumulation amount is obviously lower than that of a control group.

The invention discloses a rice low-temperature cold damage early warning method and system based on artificial intelligence, and relates to the technical field of intelligent environment early warning, and the method comprises the steps: collecting satellite data through satellites, dividing a rice region into grids, synchronously deploying sensors to collect ground data, and defining environment parameters; establishing a convergence type gating vector field of the rice field through a trisection gating mechanism, obtaining an initialized rice field state, solving the rice field state by using numerical integration, and outputting a rice field stress index; and constructing up-and-down associated data based on the environmental parameters, defining a rice field vector field addition constraint, calculating logarithmic density of a rice field state under the up-and-down associated data, then outputting rice field abnormality, and calculating rice field risks in combination with a rice field stress index. According to the invention, real-time low-temperature risk early warning of the rice field area is realized, early prediction of the rice field risk is guaranteed, and optimization of a rice field disaster prevention strategy is facilitated.