31results about How to "Improve cold and frost resistance" patented technology

The invention provides a frost-resistant composite blow-off pipe, comprising a pipe body, wherein the pipe body comprises a PE (polyethylene) layer serving as a main body, a graphite layer is arranged in the PE layer, a hydrophobic corrosion-resistant layer is arranged in the graphite layer, a temperature adjusting layer is arranged outside the PE layer, a thermal insulation layer is arranged outside the temperature adjusting layer, a PVDF (polyvinylidene fluoride) layer is arranged outside the thermal insulation layer, and a frost-proof layer is arranged outside the PVDF layer. The blow-off pipe provided by the invention is compounded with a multilayer structure, and is a cold-proof and frost-resistant multilayer blow-off pipe with a long service life.

The invention discloses a method for shortening the chimonanthus praecox breeding period. The method comprises the following steps of (1) sowing seeds in time after harvesting in early summer; (2) sowing and seedling management; (3) high branch grafting; and (4) dwarfing and promoting flowering. According to the method, by means of the comprehensive innovative integrated technology of sowing whilepicking, high branch grafting and dwarfing flower promoting, the chimonanthus praecox breeding period can be effectively shortened by two years or above, the time is saved by about one year when sowing while picking compared with traditional spring sowing in the next year, high branches of 1.5-year-old sowing seedling branches are grafted to mature and strong plants, early flowering is promoted,and the breeding period can be shortened by 1-2 years; and dwarfing and flower promoting further guarantee the flowering rate of annual grafted plants, the observation time of flower characteristics can be effectively guaranteed and advanced, the breeding management and protection cost and the land occupation time are reduced through the comprehensive innovative integration technology, the resource utilization rate is increased, the breeding cost is greatly reduced, and the breeding process is promoted.

The invention discloses compound anti-freezing liquid for vegetables and a preparation method thereof. The compound anti-freezing liquid is prepared from the following components: 50 to 70 parts of tea seed meal, 140 to 180 parts of biogas liquid, 15 to 20 parts of a plant growth regulator, 30 to 50 parts of polyglutamic acid, 5 to 8 parts of rare-earth micro-fertilizer, 20 to 35 parts of fulvic acid, 10 to 15 parts of a microelement additive, 8 to 12 parts of choline chloride, 16 to 20 parts of silicon fertilizer and 12 to 18 parts of polyethylene glycol 200. The compound anti-freezing liquidprepared by the preparation method is mainly applied when the temperature is 10 to 15 DEG C in late autumn, early winter and late spring coldness, and can be used for preventing the vegetables from freezing injuries after being applied; normal growth of the vegetables during an anti-freezing period is protected, and the photosynthesis time of the vegetables can be prolonged; meanwhile, various nutrient elements are provided for the vegetables and the vegetables are prevented from being invaded by external diseases.

The invention discloses a safe overwintering method of castor-oil plants and relates to the technical field of agricultural planting. The method comprises the measures of fertilizing for strengthening plants, watering for resisting cold, winding straws and films for preserving heat, earthing up for antifreezing, relieving films and removing sprouting and has the effects of strengthening the plants, resisting cold, preserving heat, antifreezing, sprouting, strengthening seedlings, and the like. The method can improve the output, reduce the production cost, increase the income of planting the castor-oil plants and is suitable for the application in areas with minimum temperature within 0-10 DEG C in winter.

The invention relates to a safe overwintering method for citrus shatangju and a safe overwintering preparation. The method comprises steps as follows: a safe overwintering preparation is supplemented to fruit trees in different growth periods and fruit growth periods of citrus shatangju fruit trees; the safe overwintering preparation comprises elements in parts by weight as follows: 10-20 parts of nitrogen, 20-50 parts of phosphorus, 15-50 parts of potassium, 5-30 parts of sulfur, 1-5 parts of boron, 0-6 parts of zinc, 2-8 parts of ferrum, 1-6 parts of manganese and 0-0.3 part of molybdenum; the fertilization method of the safe overwintering preparation adopts root fertilization or leaf surface spraying; when leaf surface spraying is adopted, the application amount is 300-700 g for each mu each time, and fertilization is performed for 3-6 times; and when the root fertilization is adopted, the application amount is 100-200 kg for each mu, and 100-200 kg of fertilizers are applied for 3-4 times. By means of the method, various necessary nutrition ingredients can be provided for the citrus shatangju fruit trees and fruits, nutrient balance is kept, and the cold resistance and freeze-proofing capability are increased; and the pesticide use amount can be greatly reduced, even pesticide is not used, plant diseases and insect pests can also be inhibited, and the safe overwintering preparation is very suitable for producing pollution-free and organic food.

The invention discloses a method for cultivating wild-like dendrobium officinale with high survival and cold resistance properties. The method comprises the steps that 3-5 clusters of dendrobium officinale tissue culture seedling are put into a culture bottle for rooting culture and hardening-seedling, the root of a dendrobium officinale seedling after hardening-seedling is tied to the trunk of aliving tree by using a straw rope or a hemp rope for planting, and then a culture medium fertilizer is twined on the root of the dendrobium officinale; after cultivation is carried out for 25-35 days,topdressing is carried out, a speedling leaf fertilizer is diluted into 500 times of nutrient liquid fertilizer, and harvesting is carried out after maturity. The culture medium fertilizer comprisesan anti-freezing nutrition solution and a water-retaining agent. The anti-freezing nutrition solution comprises bamboo leaves, folium Ilicis cornutae, holly herb, folium photiniae, chinese box twig, Chinese loropetalum herb, saccharose, motor vehicle antifreeze fluid and preservative. The method for cultivating the wild-like dendrobium officinale with the high survival and cold resistance properties has the advantages that a basic living environment needed to be shady, cool, moist, air-permeable suitable for the growth of the wild dendrobium officinale is created, the anti-freezing and cold-proof abilities are improved, the survival rate is improved, the yield is high, the quality and taste of the dendrobium officinale are ensured, thereby being conductive to the industrialized, large-scale, artificial wild-like cultivation and production of the dendrobium officinale.

The invention discloses an antifreeze cable, comprising a cable body, wherein the surface of the cable body is provided with an outer protective sleeve, the inside of the outer protective sleeve is provided with an inner protective sleeve, and the outer periphery of the inner protective sleeve is fixedly connected with a foam plastic layer. The invention also provides a production method of an antifreeze cable, in particular comprising the following steps: S1 wire processing, S2 wire wrapping, S3 cable forming process, S4 sheath assembly and S5 cable detection. The antifreeze cable and the production method thereof, compared with that prior art, have low cost, Simple production steps, and well wrap the cable wire through the cooperation of the outer protective sleeve and the inner protective sleeve in the cable body, A foam plastic layer and a glass wool layer are arranged between the outer protective sleeve and the inner protective sleeve can greatly improve the cold-resistant and frost-resistant effect of the cable body, effectively reduce the cracking of the inner protective sleeve, and prolong the service life of the cable in a harsh environment.

The invention relates to the field of forestry and horticulture, in particular to a method for preventing freezing of overwintering cinnamomum bodinieri seedlings. The invention comprises the steps of S1, conducting seedling height growth control treatment during summer end and early autumn, S2, conducting anti-freezing treatment before frost descent, during the period between the summer end and early autumn applying medicinal solution containing one or more of S-inducer resistance, cycogan and paclobutrazol to conduct spraying treatment to the seedlings, or conducting root cutting treatment to effectively control the height growth of the cinnamomum bodinieri seedlings, promote the lignification of cinnamomum bodinieri seedlings and enhance the anti-freezing ability of overwintering cinnamomum bodinieri seedlings; before frost descent using medicinal solution containing S-inducer resistance to conduct spraying treatment to the overwintering cinnamomum bodinieri seedlings to effectively enhance the anti-freezing capability of the overwintering cinnamomum bodinieri seedlings, at the same time, with the combination of externally erected anti-freezing shed and other measures, the freezing disasters of the overwintering cinnamomum bodinieri seedlings caused by the frost, snow, cold wave and low temperature can be avoided, and the commercial passing rate of the cinnamomum bodinieri seedlings is substantially increased.

The invention relates to the technical field of heat preservation construction materials, in particular to an anti-freezing anti-cracking cement foaming heat preservation board. The heat preservationboard is prepared from cement, coal dust, water glass, a cold-resistant flexibilizer, aluminum oxide fibers, a foaming agent, a foam stabilizer, a water reducer, an anti-freezing agent and water, wherein the cold-resistant flexibilizer is a novel material compound by various elastic materials, high-hardness fillers and the like. Cement is a mixture made by blending Portland cement with magnesium oxychloride cement according to a mass ratio of 8:1; the water reducer is a lignin water reducer or a poly-carboxyl water reducer or a melamine water reducer; the foaming agent is hydrogen peroxide; the foam stabilizer is calcium stearate; the anti-freezing agent contains propylene glycol butyl ether, glycol butyl ether acetate and diethylene glycol. The thermal conductivity of the heat preservation board is low, and the heat preservation performance is great. The cold-resistant anti-freezing performance of the materials is great, the tenacity is high, and the heat preservation board is not easily fractured at low temperature.

The invention discloses an anti-corrosion, cold-resistant and self-cleaning coating. The anti-corrosion, cold-resistant and self-cleaning coating is characterized by being prepared from the following raw materials in parts by weight: 30-35 parts of an acrylic resin emulsion, 24-28 parts of a polyvinyl chloride resin emulsion, 0.5-1.0 part of zinc naphthenate, 0.3-0.6 part of ethoxy modified trisiloxane, 1-2 parts of ferrocene, 0.4-0.5 part of sodium lignin sulfonate, 2-3 parts of fine-denier mica powder, 2-3 parts of graphite powder, 1-2 parts of stearic acid, 1-2 parts of aluminum oxide powder, 0.1-0.3 part of potassium persulfate, 1-2 parts of gamma-aminopropyl trimethoxysilane, 0.2-0.4 part of a polyacrylate leveling agent, 0.2-0.4 part of white oil, 2-3 parts of n-butyl methacrylate, 3-5 parts of propanediol, 6-9 parts of self-cleaning slurry and 14-20 part of deionized water. The coating disclosed by the invention has excellent water resistance, corrosion resistance, cold resistance, freezing resistance, fire resistance and a self-cleaning effect, the added fine-denier mica powder enhances the fire resistance of the coating, the graphite powder enhances the wear resistance of the coating, propanediol improves the cold resistance and the freezing resistance of the coating, and the coating has the advantages of convenience in taking the raw materials, low cost, a simple operation process and convenience in coating, and is suitable for decoration in a variety of places.

The invention discloses a multiple cropping mode for improving benefits of a lychee orchard in the south China and ecologically restoring soil. The crop intercropping mode of Feizixiao lychee and leguminous crops comprise the following steps: carrying out farrowing in a middle passage, filling fallen leaves, spraying cold-proof and anti-freezing agricultural input products, applying liquid fertilizer, spraying a biological decomposition agent and planting leguminous crops. The crop intercropping mode of the Feizixiao lychee and the leguminous crops mainly comprises the steps of carrying out furrowing in the lychee passage, filling fallen leaves, spraying the decomposition agent and planting the leguminous crops. According to the multiple cropping mode of the Feizixiao lychee and the leguminous crops, the utilization rate is increased by applying the liquid fertilizer; the biological decomposition agent is sprayed to accelerate decomposition of fallen leaves; and the cold-proof and anti-freezing agricultural input products are sprayed to improve the low-temperature resistance and the flower and fruit setting rate of the litchis, land-nourishing crops, leguminous crops, litchis fallen leaves and straw returning are planted to jointly supplement a biological carbon source and a nitrogen source for soil so as to restore the soil fertility, and synchronous improvement of the yield and the quality of the lychee and sustainable utilization of cultivated land in the lychee orchard are achieved.

The invention provides a frost-resistant low-temperature thermal insulation material, which comprises the following raw materials in parts by weight: 60-90 parts of natural rubber, 20-30 parts of butadiene rubber, 5-10 parts of polyisobutylene rubber, and 30-70 parts of polyurethane rubber , 10-30 parts of propylene oxide rubber, 20-35 parts of copolymerized chlorohydrin rubber, 15-30 parts of ethylene-vinyl acetate rubber, 25-40 parts of acrylate rubber, 1-3 parts of rosin resin, 6-6 parts of petroleum resin 10 parts, 35-45 parts of titanium silicate, 8-13 parts of aluminum oxide, 28-33 parts of aluminum dioxide, 3-5 parts of aromatic oil, 1-3 parts of palmitic acid amide, 1-3 parts of methyl propionate 10-30 parts of kaolin, 3-5 parts of aromatic oil, 1-3 parts of microcrystalline cellulose, 2-6 parts of microcrystalline paraffin, 1-2 parts of boron carbide, 3-8 parts of magnesium stearate, bismuth oxide 2-3 parts, 5-15 parts of zirconia fiber, 5-15 parts of glass wool fiber, 3-5 parts of asbestos powder fiber, 5-10 parts of hollow ball, 3-7 parts of expanded perlite and 5-parts of diatomaceous earth 8 servings. The invention still has excellent thermal insulation performance and mechanical performance in a low-temperature environment of -160°C, and has extremely strong cold resistance and frost resistance.

The invention disclsoes a pipe body, and specifically disclosed a temperature-resistant anti-freezing PP pipe and a preparation process thereof. The temperature-resistant anti-freezing PP pipe comprises a PP layer serving as a main body, temperature-resistant layers are arranged on the inner side and the outer side of the PP layer, a corrosion-resistant layer is arranged on the inside of the temperature-resistant layer on the inner side of the PP layer, and an anti-freezing layer, a heat preservation layer and a protective layer are sequentially arranged on the outside of the temperature-resistant layer on the outer side of the PP layer. The temperature-resistant layers arranged on the inner side and the outer side of the PP layer are capable of cutting off and slowing down temperature transmission to a certain extent; the anti-freezing layer is prepared taking homo-polypropylene and polyamide as raw materials, and has good high temperature resistance and corrosion resistance, so thatthe performance of the PP pipe is improved, and the cold resistance and freezing resistance of the PP pipe are improved greatly; the heat preservation layer and the protective layer are capable of stopping external heat transfer and protecting the PP pipe at the same time, and widening the using temperature range further; the internally coated corrosion-resistant layer is capable of improving tubular material corrosion resistance greatly, and prolonging service life; the materials of the layers of the PP pipe are nontoxic environment-friendly materials, and no pollution on the environment is caused.

The invention provides a cold-proof anti-freezing stainless steel tube for an automobile. The cold-proof anti-freezing stainless steel tube for the automobile comprises stainless steel tube main bodies, an aluminum tube, anti-corrosion coatings, elastic heat preservation layers, adhesives, rubber protective layers and rectangular anti-skid strips, the number of the stainless steel pipe main bodiesis two, the aluminum tube is co-welded between the opposite surfaces of the two stainless steel tube main bodies, the inner peripheral surfaces of the two stainless steel tube main bodies and the inner peripheral surface of the aluminum tube are all coated with the anti-corrosion coatings, the outer peripheral surfaces of the two stainless steel tube main bodies and the outer peripheral surface of the aluminum tube are all sleeved with the elastic heat preservation layers, the rubber protective layers are adhered to the outer peripheral surfaces of the elastic heat preservation layers throughthe adhesives, and the rectangular anti-skid strips are arranged on the outer peripheral surfaces of the rubber protective layers. According to the cold-proof anti-freezing stainless steel tube for the automobile, the aluminum tube is arranged between the opposite surfaces of the two stainless steel tube main bodies so that the outer peripheral surface of the aluminum tube can be arranged to be in a wave shape, then the two stainless steel tube main bodies can be easier to bent, then the stainless steel tube is more convenient to install, and the flexibility of the stainless steel tube is improved.

The invention discloses a cold-resistant anti-freezing power protection pipe which is characterized by being prepared from the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 2-4 parts of magnesium hydroxide, 0.1-0.4 part of stearic acid, 6-10 parts of calcium carbonate, 0.2-0.5 part of sodium lignosulfonate, 1-2 parts of nano antimony trioxide, 0.5-1 part of sodium oleate, 0.4-1 part of a silane coupling agent kh550, 0.5-1 part of aluminum hydroxide, 1-3 parts of a Ca-Zn composite stabilizer, 0.5-1 part of a lemon essential oil, 1-3 parts of methacrylate, 1-2 parts of sulphur, and a proper amount of water. The PVC pipe adopts the reasonable ratio; the prepared PVC is excellent in performance, enhances the toughness and the strength while improving cold resistance and freezing resistance, greatly reduces the damage sensitivity, is not easy to damage, prolongs the service life, and has the advantage of being excellent in processing performance, non-toxic, small in dust pollution, low in cost, good in stability, simple in operation, and worthy of popularization.

The invention discloses disease and pest prevention and treatment methods for greenhouse organic green tea in northern parts of China, and relates to the technical field of planting of green tea. Thedisease and pest prevention and treatment methods provided by the invention comprise a disease and pest prevention method and a disease and pest treatment method. The disease and pest prevention method comprises the following steps: adding a biological pesticide into water according to a volume ratio of 1:(40-50), and spraying an obtained solution to the organic green tea in a greenhouse every four days, wherein the biological pesticide is prepared from the following components by weight: 6 to 8 parts of a humulus scandens and camellia seed mixed fermentation broth, 1 to 3 parts of nanometer diatomite, 8 to 10 parts of a Chinese toon leaf water extract and 15 to 20 parts of water; and the disease and pest treatment method comprises the following steps: adding the biological pesticide intowater according to a volume ratio of 1:(15-18), spraying an obtained solution to the organic green tea in the greenhouse, then bagging four tea trees as a group with a plastic bag, carrying out tightbinding, introducing 10 to 15 mL of low-temperature nitrogen into the plastic bag, wherein the temperature of the low-temperature nitrogen is 0 to 2 DEG C, then carrying out maintaining for 3.5 to 4 hours, and opening the plastic bag. The disease and pest prevention and treatment methods provided by the invention can greatly reduce the incidence rate of diseases and pests of tea leaves.

The invention discloses special leaf fertilizer for melastoma dodecandrum. The special leaf fertilizer is prepared from the following raw materials in parts by weight: 20 to 30 parts of boric acid, 30to 50 parts of biogas slurry, 1 to 5 parts of seaweed extracts, 10 to 15 parts of humic acid, 5 to 15 parts of dipotassium phosphate, 1 to 5 parts of urea, 1 to 3 parts of plant growth regulators, 1to 5 parts of surfactants and 0.1 to 2.0 parts of bentonites. The prepared special leaf fertilizer for melastoma dodecandrum contains richly various medium and trace nutrition elements necessary for melastoma dodecandrum plants; the recipe realizes the reasonable matching; the adsorption is fast; the effective utilization rate is high; the melastoma dodecandrum root fertilization insufficiency canbe effectively supplemented; the yield and the quality of melastoma dodecandrum fruits can be improved; the cold resistance and freezing resistance of the melastoma dodecandrum plants can be improved; the preparation cost is low; the use is convenient; no toxic and side effects exist on the human bodies; a certain improvement effect is caused on the soil.

The invention belongs to the field of ground mats, particularly relates to a production method of a cold-resistant and anti-freezing rubber ground mat, and provides the following scheme aiming at the problems that an existing ground mat is poor in cold-resistant and anti-freezing capacity and is prone to embrittlement in a low-temperature environment: the production method comprises the following steps: preparing a glue material A and a glue material B, the A rubber material comprises 100 parts of main rubber, 150-200 parts of a filling material, 15-25 parts of rubber oil, 6-10 parts of an anti-freezing agent, 15-20 parts of functional powder, 35-45 parts of a reinforcing agent and 30-40 parts of an adhesive, and the reinforcing agent and the adhesive can be used for increasing the connection between the rubber materials and enhancing the connection strength between the rubber materials; and the anti-freezing agent can improve the cold resistance and freezing resistance of the floor mat, so that the floor mat is not easy to embrittle in a low-temperature environment, the tearing strength of the floor mat under a low-temperature condition is improved, the wear resistance of the floor mat is enhanced, and the service life of the floor mat under the low-temperature condition is prolonged.

The invention provides a high-yield saposhnikovia divaricata planting method. The method comprises the following steps: (1) land selection is carried out: a hill or slope land with loose, permeable and convenient-irrigation and drainage soil is selected; (2) seed germination is carried out: purified seeds are rubbed for three times and soaked in 5% warm hydrogen peroxide at a temperature of 30 to40 DEG C for 1 h, and before sowing, the seeds are cleaned with clean water; (3) sowing and sowing post-treatment are carried out: seedling thinning and final singling are carried out after sowing, and a foliar fertilizer is timely sprayed; and (4) disease and pest control are carried out: 70% pentachloronitrobenzene powder, Bt emulsion, phoxim, chlorbenzuron and plant ash are mixed according to aratio of 1 to 1 to 1 to 1 to 10 and are sprayed around roots, and covering by soil is carried out. The saposhnikovia divaricata planted in the method provided in the invention has the advantages of high yield, good quality, clear medicinal properties, remarkable medicinal effects, a high and stable medicinal content, a strong anti-mildew ability after harvesting, and broad application prospects.