272 results about "Cold damage" patented technology

The invention relates to a device and a method for detecting cold damage of peach fruits based on reflection and semi-transmission hyperspectral images, belonging to the field of a non-destructive testing technology of quality of agricultural products. The method comprises the steps of: acquiring reflection and semi-transmission hyperspectral images of harvested peaches in different cold damage stages during low temperature storage through a hyperspectral imager, analyzing the difference between spectral values and images of peach fruits suffering from cold damage and normal peach fruits, extracting characteristic parameters of response, optimizing and determining a variable set of reflecting cold damage characteristics of the peach fruits, and establishing a mathematic model for judging the cold damage of the peach fruits based on a Fisher discrimination method, wherein the discrimination accuracies of the established detection models based on the reflection and semi-transmission hyperspectral images respectively reach 85.6 percent and 95.6 percent. The method is capable of accurately identifying the harvested peach fruits suffering from the cold damage instead of manual detection so that the loss of storage of the harvested fruits is reduced, and can be used for detection and monitoring in circulation, storage and marketing process of harvested fruits.

The invention discloses a whitewashing agent applied to the protection of tree trunks and application. The whitewashing agent comprises the following components in percentage by weight: 40 to 45 percent of calcined lime, 2 to 3 percent of lime sulfur mixture stock solution, 3 to 6 percent of lime sulfur mixture residues, 2 percent of salt, 0.5 percent of grease and the balance of water, wherein the lime sulfur mixture residues are a mixture which mainly contains silicon oxide. A preparation method for the whitewashing agent comprises the following steps of: adding the water and lime hydrate into a reaction kettle, and heating and stirring continuously for later use; putting the calcined lime into a hot-water boiler, and dissolving to prepare lime milk solution, putting sulfur powder which is blended to form paste in advance, stirring and mixing while adding the pasty sulfur powder for 40 to 60 minutes until liquid medicine has a rufous color, and the liquid surface has a layer of membrane, cooling the liquid medicine and collecting supernatant; and mixing the two liquid mixtures, heating, stirring and cooling to obtain the whitewashing agent. By applying the whitewashing agent, fruit tree barks can be prevented from being cracked, the resinosis can be avoided, the day-night temperature difference of branches can be reduced, and pathological changes caused by cold damage and insect attack can be prevented effectively, so the whitewashing agent can be used in various fields.

The invention discloses a middle-early grape culturing method for ensuring extremely early maturity, high quality and disaster avoidance, belonging to the technical field of fruit cultivation. The method comprises the following steps: (1) selecting a variety; (2) releasing the dormancy stage as early as possible; (3) mulching an outer sky film, a ground film and an inner sky film; (4) controlling the temperature and the humidity in a greenhouse; (5) controlling grape diseases; (6) managing flowers and fruits and bagging; (7) girdling; (8) harvesting when grapes are mature, and the like. By using the culturing method, the cold damage in early spring and typhoon damage in July and August can be avoided, fruits can be sufficiently mature before the end of June which is 15-20 days earlier as compared with a grape greenhouse culturing method and 30-45 days earlier as compared with an open field culturing method, the fruits are excellent in quality and safe to eat, and the benefit of grapes per mu can be increased by over 60%. The method can be popularized and applied in grape culturing areas, such as Jiangsu, Zhejiang, Shanghai and the like.

The invention provides a juicy peach storage method, comprising the following steps: sorting and pre-cooling the fruits in a house at 20 degree after picking up the mature juicy peach fruits; low temperature processing the fruits using program cooling method; inducing the fruit tissue cold-damage endurance capability using a certain low temperature; storing the fruits at low temperature. The fruits are processed by suitable low temperature and then stored at low temperature, thus the fruit respiratory rate, fruit metabolism, fruit ripening process can be effectively decelerated and the energy consumption can be also reduced, the fruit storage time can be prolonged, at the same time the occurence of the cold-damage of the soft melting fruits during storage period and fruit decayed rate can be reduced and the storage fruit quality and marketability can be kept. The storage method has features of reasonable design, convenient operation, lower device requirement and less cost and is suitable for large-scale operation and demonstration and generalization. The storage method also can be applied for other climacteric, chilling-sensitive horticultural products.

The invention relates to a cold-resistant corn seed coating agent, which comprises the following components in parts by weight: 0.5-5 parts of dimethyl sulfoxide, 0.05-1 part of proline, 6 parts of 70% imidacloprid water dispersible granules, 2 parts of Arabic gum and 81.28-90.68 parts of water. The cold-resistant corn seed coating agent provided by the invention can form an active material warehouse around corn seeds, mainly used in the time period that corn seeds are sown for about one month, has the effect of cold resistance, and promotes seed germination; the germination rate and germination potential of corn seeds treated through the cold-resistant corn seed coating agent are increased, seedling dry weight is increased, the root growth in the corn seedling stage is promoted, roots are enabled to be increased and thick, the root shoot ratio and the seedling height are increased, the cold resistance of the corn seeds is improved, the corn seeds can resist cold damage, sown in the soil with moisture, can be sown early, and sprout early, the photosynthesis during the corn growth period is increased and the purposes of high yield and stable yield are achieved.

The invention discloses cold-resistant preparations for improving wheat's resistance to low temperature and cold damage and an application method thereof. The cold-resistant preparations include a seed-soaking cold-resistant preparation and a foliar-spraying cold-resistant preparation, the seed-soaking cold-resistant preparation is composed of disodium hydrogen phosphate, potassium dihydrogen phosphate, betaine, nitro ammonium humate and sodium nitroprusside, and wheat seeds are added into the seed-soaking cold-resistant preparation for soaking for 8-12h before seeding; the foliar-spraying cold-resistant preparation is composed of disodium hydrogen phosphate, potassium dihydrogen phosphate, sucrose, urea, betaine, nitro ammonium humate, sodium nitroprusside and surfactant, and foliar spraying is performed for 1-2 times after wheat seedlings green back at spring of the next year and / or when booting starts to prevent low-temperature late spring coldness. The cold-resistant preparations can effectively improve tolerance of wheat to cold temperature and cold damage, so that the wheat can have strong growing trend at low temperature, maintain high photosynthesis assimilation performance when encountering low temperature and cold damage at early spring and acquire high yield.

The invention provides Gingko MADS-box transcription factor gene GbMADS9 for controlling blossoming of plants; the gene is acquired by subjecting cDNA as a template to PCR (polymerase chain reaction) amplification, wherein the cDNA is acquired by reverse transcription of total RNA of gingko female flowers. The gene has the advantages that the gene GbMADS9 is capable of controlling blossoming of plants and shortening juvenile phase of plants, and under induction of GA3, ABA, salt stress, drought stress and cold damage stress, the overexpressed gene GbMADS9 is capable of enhancing plant tolerance to osmotic stress; the gene is applicable to controlling the blossoming phase of plants.

The invention discloses a modified-atmosphere preservation method for bitter gourds. The method includes the following steps of raw material pretreatment, bagging, gas-filled packaging, sterilization and storage and transportation. By adopting a modified-atmosphere packaging technology and adjusting gas compositions in a packaging storage environment, growth and metabolism of microorganisms can be effectively restrained; meanwhile, by controlling temperature and improving a pretreatment and packaging process, cold damage, ethylene ripening and decaying of the bitter gourds are avoided. According to the modified-atmosphere packaging technology, the non-poisonous, non-harmful and no-residual effects are achieved, non-harmful treatment is adopted in the whole preservation process, the usage of poisonous chemical agents is avoided, and therefore no harmful influence on the bitter gourds exists. By means of the method, the defects of the prior art are overcome, the original freshness, color and luster and flavor of the bitter gourds can be kept, the shelf life of the bitter gourds can be prolonged, and the easily appearing problems that due to extremely low O2 concentration and extremely high CO2 content, the bitter gourds suffer oxygen deficit, and breathing disorders are caused in the modified-atmosphere preservation process of the bitter gourds can be solved.

The invention discloses a cold damage prevention refrigeration house, aiming to provide a refrigeration house which can reduce the cold damage caused by the greater temperature difference between the air blast temperature and the temperature in the refrigeration house so as to implement flow equalization in the refrigeration house. An air return jacket is formed between a refrigeration house body and an inner baffle plate; the upper end of the inner baffle plate is provided with an air blast plate; the bottom of the inner baffle plate is provided with a plurality of air return openings; a partition plate is arranged between the air blast plate and the top of the refrigeration house body; a mixed region is formed between the partition plate and the top of the refrigeration house body; a static pressure air blast region is formed between the partition plate and the air blast plate; the middle part of the partition plate is provided with an air blast fan; an air cooler is arranged at one side of the mixed region, and the other side of the mixed region is communicated with the air return jacket; the air return opening of the air cooler is communicated with the air return jacket; and the air blast opening of the air cooler is communicated with the mixed region. Part of the air passing through the air return opening passes through the air return opening of the air cooler and enters the air cooler, is discharged out from the air blast opening of the air cooler, and is mixed with the other part of return air which does not pass through the air cooler, and the mixed air is discharged into the refrigeration house through the static pressure air blast region, thus the temperature difference between the air blast temperature and the temperature in the refrigeration house is reduced, and the generation of cold damage is reduced.

The invention provides a heavy oil reservoir cold recovery method adopting carbon dioxide energy storage and high pressure viscosity reduction. The heavy oil reservoir cold recovery method comprises the steps that carbon dioxide is injected into a heavy oil reservoir to accumulate energy for a stratum and initial viscosity reduction is carried out to crude oil; and a high-efficiency cold-recoveryviscosity-reducing agent is used to achieve further viscosity reduction of heavy oil in a carbon dioxide low-temperature effect environment, interfacial tension is reduced, colloids and asphaltene precipitated from the heavy oil are dissolved, thus mobility of underground heavy oil is improved, driving power of the crude oil is increased, and the degree of exploitation of the heavy oil reservoir is improved. According to the heavy oil reservoir cold recovery method adopting carbon dioxide energy storage and high pressure viscosity reduction, the improvement of the reservoir energy of heavy oilreservoirs and the improvement of the flowability of underground crude oil are realized, and the cold damage effect caused by the precipitation of the colloids and the asphaltene by the low-temperature effect during the heavy oil cold recovery process is reduced, thereby greatly improving the degree of reserve utilization of the heavy oil reservoirs.

The invention relates to an alfalfa stress response gene MsNAC3 and an application thereof. A novel NAC (N-Acetyl Cysteine) family related gene is cloned and authenticated from an alfalfa genome by using an RT-PCR (Reverse Transcription-Polymerase Chain Reaction) technology and is named as MsNAC3 with a nucleotide sequence as shown in SEQ ID No.11, and a fusion expression vector containing an enhanced green fluorescent protein (EGFP) gene is constructed. The expression pattern of the gene MsNAC3 in alfalfa and the relation between the gene and adversity stress (cold damage, salt damage and drought) are analyzed by using a fluorescent quantitative PCR technology, in such a way, people find that the cold resistance, drought resistance and salt resistance of a transgenic tobacco plant can be improved through the overexpression of the gene in tobacco; the gene can be used for genetically transforming other monocotyledons and dicotyledons and improving the stress resistance of the monocotyledons and the dicotyledons.

The invention relates to a plant growth adjusting agent, in particular to the application of jasmonic acid methyl ester analogue serving as the plant growth adjusting agent. The analogue serving as the plant growth adjusting agent has high biological activity, and low-density water solution can promote growth and sprouting of the plants. In addition, the adjusting anent promotes resistance of the plants, such as insect pest resistance, high temperature resistance, low temperature resistance, salt and alkali resistance, drought resistance, cold damage resistance and the like.

The invention discloses an automatic-irrigation heat-insulating cultivation box for plant cultivation. The automatic-irrigation heat-insulating cultivation box comprises a cultivation device and a control system, wherein the cultivation device comprises a box body, a water catching disc and a transparent heat-insulating cover, the control system comprises a controller, a sensor and a spraying device, the sensor is arranged in soil in the box body and is connected with the controller so as to send signals to the controller, the controller is connected with a power supply, the spraying device is arranged above the cultivation device, is connected with the controller and is controlled by the controller to perform spraying operation, and the spraying device is connected with a water source. The automatic-irrigation heat-insulating cultivation box for plant cultivation controls water spraying operation of the spraying device so as by comparison between data detected by the sensor and parameters set in the controller, so as to reach the automatic irrigation; moreover, the redundant water is discharged into the water catching disc through a drain hole, and soil can be supplemented with water to some extent when water in the water catching disc is heated and evaporated; and furthermore, the transparent heat-insulating cover can fully absorb and store heat to protect plants against cold damage.

The ecological plant protectant consists of high-fat component and other component mixed together and is diluted with water and sprayed. It comes in eight types, including cold protecting one capable of raising temperature by 1-2 deg.c to prevent cold damage to plant; drought preventing one capable of reducing foliage evaporation to raise yield; disease preventing one to reach fungus, bacteria and virus preventing effect as high as 50-80 %; pest preventing one to reach pest preventing effect as high as 90 %; growth promoting one to raise growth rate of plant; robustness giving one to reach a yield increase of 10-15 %; mature promoting one to move up mature stage by 10-15 days; and mulching spraying one capable of raising ground temperature by 1-2 deg.c to increase yield.

The invention relates to compound medicine liquid for enhancing capability of plants to resist natural disasters, which belongs to the technical field of agriculture. The compound medicine liquid comprises 5 to 1500 parts of plant growth regulators, 50 to 500 parts of sterilizing agents (pesticide), 20 to 80 parts of plant hormone and 15 to 20 parts of powerful cell activating agents. The medicine liquid can obviously enhance the capability of the plants to resist diseases and pests and to be relieved from natural disasters (drought, waterlogging, high temperature, cold damage, snow and rain, strong wind, heavy rain, continuous rain, dry hot air, hailstone, lodging, overgrowth, premature senility and the like). The vitality can be fast recovered after the application of the medicine liquid in disasters or after disasters, rich rooting, sprouting, branching, leafing, flowering, fruition, expansion, weight increase, seasoning and beautification can be immediately realized, and various plant diseases and insect pests can be prevented and treated. In general, when the compound reagent of the invention is applied, the yield of fruit trees, vegetables and crops is increased instead of being reduced. The yield can be increased by 1 to 2 times when the compound medicine liquid is used, and the effect is obvious.

A present totally-enclosed rotor type refrigerating compressor has two vicious cycles. The effects of a hot cylinder are as follows: a high-temperature motor rotor and compressing heat emission are accumulated at an air cylinder, expansion is caused after air suction and heating, the temperature of compressed exhaust air is increased, the power of a motor is increased, and the like. The cold damage is as follows: when a cold cylinder and an air suction pipeline are under high temperature and pressure, the compressed exhaust air is sucked into an air chamber for evaporation and heat absorption after condensing dilute lubricating oil, and the like. Therefore, only 50% of cold quantity can be obtained. The realizing steps of the compression cycle (virtuous) of the cold cylinder are as follows: 1. compression of the cold cylinder: the hot cylinder is cooled, eliminates compression and releases heat to reduce net compression work and condensation load; 2. air suction of the cold cylinder: the characteristic of low temperature of an air suction chamber is realized by continuous low-temperature air suction and low-temperature cooling of the hot cylinder so as to increase the cold quantity; 3. improvement of an oil channel: the air suction force is increased; 4. the overheating of the exhaust air and the heat emission of the motor are used for heating the lubricating oil with absorbing property, and an absorbent has low differential pressure and good absorbing property on the surface of the cooled air chamber, so as to further increase the cold quantity and reduce the net compression work. The efficiency is that the power of the motor is reduced by more than 30% and the cold quantity is increased by 2 times.

The invention discloses a low temperature resistant preservative for tomatoes and a use method of the low temperature resistant preservative. The method comprises the following steps: step I, washing and disinfecting picked tomatoes to be refreshed; step II, preparing the low temperature resistant preservative for the tomatoes, and soaking the washed and disinfected tomatoes in the low temperature resistant preservative for the tomatoes for 15-30 min, wherein the preservative comprises the components of brassinolide, salicylic acid, gibberellins, ethanol, an active agent Tween-20 and water; step III, taking out the soaked tomatoes and drying at room temperature, carrying out UV-C irradiation on surfaces of the dried tomatoes; step IV, placing the tomatoes subjected to the UV-C irradiation in a refrigerated storage for refrigeration. By using a low temperature resistant preservation method for the tomatoes provided by the invention, cold damage symptoms of the picked tomatoes can be effectively delayed, the rot and mildew of the tomatoes in a low temperature storage and transportation process can be inhibited and the preservation time can be remarkably prolonged.

The invention discloses an intelligent pre-cooling treatment and sectioned controlled atmosphere storage combined system for controlling low-temperature cold damage of cold-sensitive fruit vegetable type vegetables and belongs to the technical field of intelligent control on food quality. The system comprises a sensor detection module, a data acquisition module, a wireless communication module, a terminal and a control system, wherein the sensor detection module detects carbon dioxide, ethylene as well temperature and humidity in a preservation chamber, then the data acquisition module connected with the sensor detection module acquires data, and the wireless communication module connected with the data acquisition module sends the data to the terminal; the sensor detection module is also connected with the control system, and the control system controls environmental parameters when the terminal reads the sensor detected data. Compared with existing physical and chemical analysis methods and artificial sensory analysis, the system has the advantages that to-be-tested samples cannot be damaged, the task load is small, and the objectivity and efficiency are higher.

The invention relates to the field of tunnel portal side slopes, in particular to a structure capable of avoiding cold damage to a high-temperature and unstable freeze soil area tunnel portal side slope. The structure comprises a side slope rock and earth mass, a rubble stone layer and a side slope retaining structure. Ventilation pipelines are distributed in the rubble stone layer at equal intervals. The wall of each ventilation pipeline is provided with ventilation holes. The upper end of each ventilation pipeline faces the cold air direction of the cold season. The upper end and the lower end of each ventilation pipeline are respectively provided with a horizontal cross slope. The lower end of each ventilation pipeline is connected with a longitudinal drainage ditch. The upper port and the lower port of each ventilation pipeline are respectively provided with a wind stop cover. Square ventilation ports corresponding to the ventilation pipelines in portion are distributed at the bottom of the side slope retaining structure. The rest of the side slope retaining structure is embedded into the ground surface. By the utilization of the characteristics of natural convection circulation of cold air in the rubble stone layer and rapid ventilation and cooling in the ventilation pipelines with the ventilation holes, the high-temperature and unstable freeze soil area tunnel portal side slope is automatically cooled, the temperature of the side slope is reduced, the upper limit of freeze soil is increased, cold reserves of a stratum are increased, and the problem of cold damage to the retaining structure of the high-temperature and unstable freeze soil area tunnel portal side slope is solved.

The invention discloses a cold-resistant foliar fertilizer and a preparation method thereof, the cold-resistant foliar fertilizer includes 10-15 parts of abscisic acid, 10-20 parts of chitosan, 20-30 parts of boric acid, 25-35 parts of potassium carbonate, 5-15 parts of epsilon-Poly lysine, 5-15 parts of humic acid, 10-30 parts of itaconic acid, 1.7-15 parts of trace elements, 0.1-0.5 part of Hexanoic,2-(diethylamino) ethyl estercitrate, 60-80 parts of water and 0.1-1 part of a chelating agent. The preparation method of the cold-resistant foliar fertilizer comprises the following steps: obtaining raw materials according to the components of the cold resistant foliar fertilizer; and stirring and mixing the obtained raw materials at 75-80 DEG C for 25 to 35min. The cold-resistant foliar fertilizer is directly applied to leaf of crops by spraying, the cold-resistant foliar fertilizer contains the most environmentally-sensitive exogenous hormone abscisic acid, and can quickly adjust the crops to change the metaboilic level to adapt to cold damage environment, and by use of various functional components, effects of low temperature on water in plants can be reduced, nutrients and nutritional components for promoting growth and metabolism can be supplemented, and the metabolic ability of the crops in low temperature environment can be maintained stably.

The invention relates to application of a micromolecular heat shock protein gene improving stress resistance of oryza sativa. The gene improving various stress resistances of oryza sativa is Oryza sativa Heat Shock Protein18 (OsHSP18), with the nucleotide sequence being shown in SEQ ID NO:1 in a sequence table. The full-length coding sequence of the gene in SEQ ID NO:1 is inserted into a eukaryotic vector to obtain a eukaryotic recombinant plasmid over-expressed by the gene OsHSP18, and the eukaryotic recombinant plasmid is transformed into oryza sativa to obtain a transgenic plant over-expressed by the OsHSP18. Experiments show that the expression level of the gene OsHSP18 is obviously raised when oryza sativa is subjected to heat, drought, salt and low temperature stress, and the transgenic oryza sativa over-expressed by the OsHSP18 can enhance the resistance of the plant to various adversities (high temperature, drought, salt and cold damages) and does not have obvious impacts on agronomic traits such as plant height, tillering and the like. Thus, the gene can be applied to improvement of stress resistance of crops.

The invention relates to the cold resistance appraisal of plants, and particularly provides a cold resistance appraisal method of a cotyledon period. The cold resistance appraisal method of the cotyledon period comprises the following steps: carrying out low-temperature processing on the strong seedlings of the cotyledon periods of a plurality of strains to be tested, wherein the plurality of strains exhibit even growth vigor; then, causing the strains to recover growth under a normal temperature; investigating the states of stems and a situation that cotyledons are damaged; judging a cold damage level according to a standard; calculating the cold resistance index of a variety to be tested; and appraising the cold resistance level according to the standard. The appraisal method disclosed by the invention has the advantages of being simple, visual, reliable and short in periods, can effectively carry out the cold resistance screening of cotton seedling stage germplasm resources and varieties, and paves the way for the further research of the cold resistance breeding and the cold resistance mechanism of the cotton.

The invention belongs to the technical field of farm product preservation and particularly relates to a method for controlling the chilling injury of peaches and keeping the eating quality of the peaches. The method is characterized in that the properly matured peaches are picked and fumigated by ethanol combined with 1-MCP, then refrigerated and transported or sold. The first advantage of the method is good effect, i.e. the chilling injury of the peaches during the low-temperature storage can be obviously delayed and the freshness period can be prolonged; the second advantage is safety, i.e. the ethanol used in the method is a component naturally generated by plants such that the eating safety is high, only a little ethanol is used in the processing and the residual ethanol in the environment and on the surfaces of the peaches is eliminated by ventilation or other methods, such that the amount of the ethanol absorbed by the peaches is small, and the taste of the peaches remains the same after the processing, therefore the method has no food safety problems; the third advantage is easiness, i.e. the method is easy to operate and popularize and is suited to be used for mass production; and the fourth advantage is low cost.

The invention discloses a hot air and MeJa compounded treatment refreshing method of a loquat fruit, which is specially used for protecting the picked loquat fruit from cold damage in the storage and transportation process and maintaining the quality to prolong the shelf life of the product. The technology comprises the following steps of: placing the sorted and pre-cooled loquat fruit into an airtight container with certain volume; and suffocating the loquat fruit with 15-20 micro-mol / LMeJA for 6 hours in 38 DEG C hot air. The compounded treatment refreshing method can obviously inhibit the picked loquat fruit from cold damage and quality deterioration, and the fruit subjected to the compounded treatment is not suffered from the cold damage after being stored for 35 days at 1 DEG C, while the contrast fruit which is not treated appears the obvious symptom of cold damage after being stored for 21 days. The hot air and MeJa compounded treatment refreshing method has the comprehensive advantages of separate heat treatment and separate MeJA treatment, and the used MeJA is a natural grown regulating substance in the plant, has the characteristics of no toxicity, no residues and the like, and can ensure the edible security of the fruit.

The invention discloses a digital constant-temperature control concrete ultra-low-temperature construction maintenance system, which comprises a sliding template, a data collecting device, a wireless transmission device and a heating control device, wherein a heat insulation shed is arranged on the outer periphery of the sliding template, a steel plate hanging frame is arranged at the lower part of the sliding template, four electronic heating quilts are suspended on the steel frame hanging frame, the four electronic heating quilts are surrounded into a barrel-shaped sealing head insulation cover, each electronic heating quilt is respectively and sequentially formed by connecting a high-intensity glass fiber layer, a heat tape and a heat insulation cotton layer from inside to outside, a plurality of temperature sensors are arranged on each electronic heating quilt, and all temperature sensors and heat tapes are respectively connected with the data collecting device, the wireless transmission device and the heating control device. Good heating and heat insulation effects can be realized, and the heat loss during the concrete casting can be effectively prevented. When the environment temperature is minus 30 DEG C, the temperature on the surface of the concrete can be enabled to be higher than 5 DEG C, so the cold damage and the crack occurrence on the surface of the concrete can be prevented, and the casting quality of bridge piers can be ensured.

The invention discloses a comprehensive identification and evaluation method for bitter gourd cold resistance. The method includes the steps that germination energy and the activity index of seeds, the seedling cold damage index and the pollen germination rate under the low-temperature condition are measured, and bitter gourd cold resistance is comprehensively identified and evaluated by means of principal component analysis, subordinative function value analysis and cluster analysis. Several fuzzy evaluation methods are comprehensively used, a fuzzy evaluation object is processed through accurate digital measures, and materials containing information presenting fuzziness can be quantitatively evaluated scientifically and reasonably in the mode of being close to reality. As the indexes related to a bud stage, a seedling stage and a fruit-bearing pollination stage are adopted at the same time, when the comprehensive identification and evaluation method is used for carrying out tolerance identification on a great number of materials, the tolerance essence of bitter gourd crops can be really reflected, accuracy and reliability of identification are improved, and the comprehensive identification and evaluation method is suitable for comprehensively identifying and evaluating cold resistance of different bitter gourd resources, which is beneficial for accelerating bitter gourd cold resisting seed breeding.

The invention provides water-soluble fertilizer for reinforcing the cold resistance of crops, as well as a preparing and using method thereof. The water-soluble fertilizer is prepared from the following raw materials in parts by weight: 300-320 parts of urea, 100-130 parts of monopotassium phosphate, 25-30 parts of diammonium hydrogen phosphate, 40-60 parts of bladder-wrack extract, 1-3 parts of vitamins, 5-7 parts of proline, 8-10 parts of glycine betaine, 10-12 parts of sorbitol, 4-6 parts of EDTA-Ca, 1-3 parts of DTPA-Fe, 1-2 parts of EDTA-Zn, 2-3 parts of disodium octaborate tetrahydrate,2-4 parts of nano-silicon sol, 10-15 parts of a pH regulator, 2-3 parts of stabilizer, 8-10 parts of surfactant and the balance of water. The water-soluble fertilizer can be used for effectively reinforcing the low-temperature stress resistance of crops to reduce output reduction caused by cold damage; and the method is simple in preparation steps, is applicable to large-scale industrial production application, is convenient to sue, and is favorable to popularization.

A low-temperature-resisting high-yield and high-efficiency peanut cultivation method is characterized by comprises the following cultivation steps of selecting high-yield cold-resisting new-species peanuts, additionally applying a thoroughly decomposed organic fertilizer as a base fertilizer and increasing a ground-temperature carbon-based slow release fertilizer serving as special peanut fertilizer, utilizing salicylic acid and chitosan to soak seeds, performing sowing in an appropriate period, spraying an anti-microbial and insect-resistant herbicide at a time to comprehensively prevent and control diseases, insect pests and weeds, covering a black mulching film, spraying leaf fertilizer monopotassium phosphate and calcium chloride before cold damage comes to improve the stress resistance of plants and spraying a plant growth regulator chlormequat chloride and daminocide. By means of the cultivation measures, the peanuts are hardly subjected to threatening from early-spring cold spell in later spring and cold damage caused by early come of low temperature of the autumn, the yield increasing benefit of the peanuts is obvious, rural income is improved, the peanut planting enthusiasm of peasants is improved, and healthy development of peanut industry is guaranteed.

A bio-enzyme fracturing gel breaker, consisting of 5-10 parts of vitamin glycosidic bond specific enzyme, 5-10 parts of starch glycosidic bond specific enzyme, 5-10 parts of guar gum glycosidic bond specific enzyme, 5- It is made by mixing 15 parts of BIO-P bioactive agent and 55-80 parts of water. It can be used instead of other commonly used gel breakers. The dosage is 20-35kg. It catalyzes B(1-4) on the surface of guar gum molecules Glycosidic bonds, to crack them, and finally crack the polysaccharide form of guar gum molecules into irreducible monosaccharides or disaccharides, and the viscosity becomes thinner, so that the fracturing fluid raffinate can be flowed back more stably from the proppant packing , to reduce polymer damage, to improve the production efficiency of oil and gas production, the invention has a thorough gel breaking, can eliminate the damage of guar gum residue, and solves the problems of cold damage, water damage and residue damage, and has good environmental protection effect and wide application range Wide range, strong compatibility, thorough glue breaking, simple operation and high cost performance.