30results about How to "Reduce yellowing rate" patented technology

The invention discloses a method for raising cool-season lawn grass heat resistance through a treatment of foliage spray of citric acid, and relates to the technical field of landscaping lawn management. The method includes the steps of: 1, Festuca arundinacea lawn building and planting, which includes the substeps of sowing and lawn management; and 2, foliage spray of a citric acid solution, wherein sodium citrate is prepared into an optimum concentration of 2mmol / L, and for the built Festuca arundinacea lawn, the sodium citrate solution is uniformly sprayed on the Festuca arundinacea lawn 100kg per mu through a foliage spray method at the high temperature initial stage in summer, and the sodium citrate solution is sprayed again after one week. The method for raising the cool-season lawn grass heat resistance through the treatment of foliage spray of the citric acid obviously raises the heat resistance of Festuca arundinacea by applying the citric acid to the Festuca arundinacea lawn, raises the lawn quality, prolongs the green period, and reduces the yellowing rate. In comparison with the method of seed selection of heat-resistant Festuca arundinacea, the method of the invention has the advantages of short period, fast effect, strong operationality, and low cost.

The invention discloses an anti-yellowing finishing process for light-colored fabrics. The anti-yellowing finishing process is implemented by adding an optimized anti-yellowing finishing process for four times in processing, dyeing and finishing processes of common light-colored fabrics, specifically, firstly, carrying out an anti-yellowing one-bath process simultaneously a dyeing process is performed, secondly, carrying out an anti-yellowing soaking process before soaping is performed, thirdly, carrying out an anti-yellowing one-bath process while the last washing process is performed, and finally carrying out an anti-yellowing finishing process in a heat setting process. The optimization of the four-time anti-yellowing finishing process effectively reduces the probability of yellowing of the light-colored fabrics, so that finished fabric products are balanced in color; the anti-yellowing finishing process for the light-colored fabrics disclosed by the invention has the advantages of environmental friendliness and high quality, and has strong practicability.

The invention relates to the technical field of food fresh keeping, and provides a chitosan fresh keeping method of allium mongolicum regel. The allium mongolicum regel is stored after being soaked bya chitosan solution with the mass concentration being 0.2 to 0.75 percent. Through the study, the effects that the high-concentration chitosan (with the mass concentration being higher than 1.0 percent) can accelerate the decay yellowing speed of the allium mongolicum regel, and can reduce the storage time are discovered. After the allium mongolicum regel is treated by chitosan solution with theproper concentration (with the mass concentration being 0.2 to 0.75 percent), a semi-permeable membrane with the proper thickness can be formed on the surface of the allium mongolicum regel. The normal and slow aerobic respiration of the allium mongolicum regel leaves can be met; the moisture evaporation can be reduced; the pathogenic bacterium invasion can be reduced, so that the goal of prolonging the storage time of the allium mongolicum regel is reached; the shelf life of the allium mongolicum regel is prolonged. The method has the advantages that the effective storage period of the alliummongolicum regel can be prolonged to about 15d; the fresh keeping method is safe and reliable; the cost is low; the operation is convenient.

The invention belongs to the field of flower planting, and particularly relates to a large-scale planting method of fly-feather arrowroot. According to the large-scale planting method of fly-feather arrowroot, guttation of plants is limited by controlling temperature and humidity, proper fertilizer and water are added, the defects that guttation of fly-feather arrowroot is serious, and leaves etiolate in the planting process are overcome, and the requirement for large-scale planting is met.

The invention discloses an anti-yellowing finishing agent of light color fabric. The anti-yellowing finishing agent of light color fabric is mainly prepared from 4-hydroxy-benzeneethanamin, isopropanolamine, glacial acetic acid, 4-chloro-2-nitroanisole, 1,2-aminoazophenylene, 2-nitro-chlorophenylhydrazine, acetylsalicylic acid, distilled water, and dehydrocostus lactone. The preparation method comprises steps of mixing, stirring, and standing. The anti-yellowing finishing agent is capable of reducing yellowing of light color fabric effectively, and ensuring color uniformity.

The invention relates to a vulcanized black jean garment washing process. The vulcanized black jean garment washing process comprises the following steps of placing preprocessed jean garments into desizing solution for desizing treatment at 0-60 DEG C for 10-30 minutes, draining the desizing solution and washing the desized jean garments in clean water at room temperature; placing the desized jeangarments into enzyme solution for treatment at 30-40 DEG C for 15-60 minutes, draining the enzyme solution and washing the treated jean garments in clean water at room temperature; placing the treated jean garments in rinsing solution for treatment at 40-50 DEG C for 10-50 minutes, draining the rinsing solution and washing the rinsed jean garments in clean water at room temperature; adding dechlorinating deodorant into the rinsed jean garments for treatment at 30-40 DEG C for 5-15 minutes, draining the dechlorinating deodorant and washing the treated jean garments in clean water at room temperature; dewatering and drying the first-neutralized jean garments, spraying PP (polypropylene) solution onto the surface of the jean garments, then washing the jean garments in clean water; treating the PP-processed jean garments with hydroxylamine sulfate at 20-50 DEG C for 5-15 minutes, draining the hydroxylamine sulfate, and washing the treated jean garments in clean water at room temperature;processing, dewatering and drying the second-neutralized jean garments. Compared with the prior art, the vulcanized black jean garment washing process is environmentally friendly and safe, and the processed jean garments can be higher in performance.

The invention discloses an anti-yellowing process for fabric. The anti-yellowing process comprises the following steps: (1) performing an anti-yellowing one-bath process while performing a dyeing process; (2) performing an anti-yellowing soaking process before a soaping process; (3) performing the anti-yellowing one-bath process while performing a water washing process; (4) performing an anti-yellowing finishing process in a heat setting process. After the four anti-yellowing finishing processes, the anti-yellowing process for the fabric can not only effectively reduce the probability of yellowing of the light-colored fabric, but also effectively ensure color uniformity.

The invention discloses an IPDI type transparent high-strength polyurethane board and a preparation method thereof, and belongs to the field of polyurethane boards. The IPDI type transparent high-strength polyurethane board and the preparation method thereof can effectively improve optical stability and chemical resistance of a polyurethane board finished product through use of IPDI, so that the transparency is higher, and the hardness is higher. Meanwhile, in the preparation process, under the action of centrifugal force, the extension extreme temperature zone transversely extends, the extension ball rod longitudinally extends, and the introduced liquid nitrogen is matched, so that the extension extreme temperature zone can be in an extremely low temperature state, local sudden temperature reduction of the material in contact with the extension extreme temperature zone can be realized, and the crystallinity of the material A in the preparation process is remarkably reduced; and therefore, the transparency of the polyurethane sheet material finished product can be effectively ensured, the yellowing rate of the polyurethane sheet material finished product can be significantly reduced so as to maintain the high transparency after the long-time use, and the use rate of the polyurethane sheet material can be significantly improved and the waste rate of the resource can be reduced compared with the prior art.

The invention relates to the technical field of agricultural production, and particularly discloses a silicon-containing composition, a foliar fertilizer for preventing and treating manganese toxicityof sugarcane, a preparation method and an application. The silicon-containing composition comprises the following raw materials: sodium silicate, water, alcohol, trimethyl ammonium bromide, ferrous sulfate heptahydrate, citric acid, sulfuric acid, sodium metasilicate and urea. The silicon-containing composition provided by the invention has a very remarkable effect of overcoming the manganese toxicity of sugarcane seedlings; through reasonable compatibility of various raw materials, the prepared silicon-containing composition can be used as a foliar fertilizer, the manganese content of sugarcane seedlings can be reduced, the manganese toxicity symptom of sugarcane is rapidly reduced, the yellowing rate of seedlings is reduced; meanwhile, the number of sugarcane seedlings and the survivalrate of manganese toxicity sugarcane seedlings are increased, and the yield of sugarcane stems is remarkably increased. The preparation method provided by the invention is suitable for industrial production, and solves the problem that no foliar fertilizer is sprayed to prevent and treat manganese toxicity of sugarcane in the existing method for preventing and treating manganese toxicity of plants.

The invention provides a feed additive for reducing the yolk scattering of fresh eggs, which comprises the following components in parts by weight: 20-40 parts of grape seed extract, 20-40 parts of vitamin E, 10-40 parts of folium artemisiae argyi extract, 10-40 parts of beta carotene, 20-40 parts of selenium yeast and 60-80 parts of carrier, wherein the carrier comprises bentonite and rice mill by-product and the weight ratio of the bentonite to the rice mill by-product is 1: 1-3: 1. In each ton of basic feed, the dosage of the feed additive is 200 grams to 600 grams. The feed additive provided by the invention is suitable for all egg-laying poultry, improves the oxidation resistance and antibacterial ability of fresh eggs, can greatly reduce the occurrence rate of yolk scattering of thefresh eggs in the storage period in combination with refrigeration, and the components in the feed additive are all natural plant components or substances allowed to be added into the feed.

The invention relates to a preparation method of five-spice-flavor salty chicken egg yolk, and the method is as follows: 1) the egg weight of fresh eggs controlling to be 55-60 g; 2) adding salt, water-soluble five-spice powder and citric acid into water to prepare a salt solution, and slowly pouring xanthan gum, propylene glycol alginate and sodium caseinate while stirring to obtain a prepared material liquid; 3) injecting the material liquid obtained in the step 2) into a cleaned egg barrel, then putting the eggs into the cleaned egg barrel, press-sealing the eggswith the material liquid same as the material liquid obtained in the step 2), and pickling the eggs for 28-35 days at water temperature of 15-23 DEG C; 4) sampling and monitoring the salted eggs pickled in the step 3) at regulartime intervals, and discharging the eggs when the salt content is controlled to be 1.0-3.0%; and 5) uploading the eggs discharged in the step 4) directly to a cleaning production line, opening the eggs to obtain egg yolk, cleaning the egg yolk to select qualified products, and performing vacuum packaging, sterilizing and inspecting to obtain the five-spice-flavor salty chicken egg yolk. The obtained five-spice-flavor salty chicken egg yolk is bright in color, and the egg yolk sand is smooth in taste, moderate in salt and light and slight in fragrance.

The invention belongs to the technical field of dracaena sanderiana planting and particularly provides a dracaena sanderiana culture solution. The culture solution is prepared by mixing a mother solution I, a mother solution II, a mother solution III and a mother solution IV, and the volume ratio of the mother solution I to the mother solution II to the mother solution III to the mother solution IV is (8-11) to (2-5) to (2-5) to (0.04-0.12). The mother solution I comprises the following substances: ammonium nitrate, potassium dihydrogen phosphate, potassium nitrate, calcium chloride and magnesium sulfate; the mother solution II comprises the following substances: ferric sulfate, manganese sulfate, sodium molybdate, cobalt chloride and boric acid; the mother solution III comprises the following substances: tryptophan, threonine and diisopropanolamine; and the mother solution IV comprises the following substances: water-soluble azone, Limbolid, furalane, amobam and methylaminovinylglycine. The nutrient solution provided by the invention has the effects of promoting rooting and sprouting, accelerating growth, strengthening braches and greening leaves and has great significance in popularization.

The invention discloses a fermentation puffed feed for adult Basa and a preparation method of the fermentation puffed feed. According to the method, nutrient components are reasonably distributed, sothat more nutrient supply can be well provided for growth and development of the adult Basa. Through fermentation degradation before puffing, the Basa can well absorb and utilize the feed, so that theconversion rate of the feed is increased. Bacillus is used, so that digestion and decomposition effects of Basa to the feed can be well promoted, the feed conversion rate is further increased, and besides, the immunocompetence of the Basa and the water quality environment are greatly improved.

The invention relates to the technical field of food fresh keeping, and provides a chlorine dioxide fresh keeping method of allium mongolicum regel. The allium mongolicum regel is soaked by a chlorinedioxide solution with the concentration being 25 to 75 mg / L; draining is performed; then, after water suction paper is covered on the surface of the allium mongolicum regel, the allium mongolicum regel is charged into a fresh keeping bag with holes for storage; chlorine dioxide belongs to a strong oxidizing agent; the chlorine dioxide stable series is used as a food additive. Through the study, the effects that when the chlorine dioxide solution with the concentration being 25 to 75 mg / L is used for treating the allium mongolicum regel, the storage time being about 15d can be obtained; the time is obviously prolonged through being compared with the storage time in the prior art. For the allium mongolicum regel treated by the fresh keeping method provided by the invention, the peak value occurrence time of nitrate is delayed by about 6d; in addition, the peak value concentration of the nitrate is also relatively reduced. Namely, the chlorine dioxide fresh keeping method of the allium mongolicum regel provided by the invention has the advantages that the nitrate peak value occurring time can be effectively delayed; the nitrate concentration can be reduced; the harmful substances inthe allium mongolicum regel can be reduced.

The invention belongs to the field of flower planting, and particularly relates to a large-scale planting method of fly-feather arrowroot. According to the large-scale planting method of fly-feather arrowroot, guttation of plants is limited by controlling temperature and humidity, proper fertilizer and water are added, the defects that guttation of fly-feather arrowroot is serious, and leaves etiolate in the planting process are overcome, and the requirement for large-scale planting is met.

The invention discloses an MS sealant processing technology. The MS sealant processing technology includes the following steps that S1, a hydroxyl-terminated polyether / 1,1,3,3-tetramethyl-1,3-bis-[2-[7-dicycloxide[4.1.0]hepta-3-yl]ethyl] disiloxane polycondensate is prepared; S2, 5-(triethoxysilyl)-2-norbornene modified filler is prepared; S3, a polyethylene glycol monoallyl ether / methyl vinyl bis(butanone oxime) silane / 4-acryloyl methyp-bydroxybenzoate benzophenone / 3,4-epoxy-2-methyl-1-butene copolymer is prepared; and S4, a sealant is prepared. The invention further discloses the MS sealantprepared according to the MS sealant processing technology. The MS sealant processing technology is simple and easy to operate, and is convenient to implement, the implementation process consumes lessenergy, the cost is low, no pollution is generated, large-scale production is realized, and processing efficiency and the product qualification rate are high; and the prepared MS sealant is good in storage stability, weather resistance and mechanical property, good in yellowing resistance, adhesion, coating and stress relaxation and long in service life.

The application provides a method for repairing discoloration of paper yellowing after deacidification, which includes the following steps: 1) spray the weakly acidic solution evenly on the yellowing area of ​​the paper surface after deacidification, and neutralize the excess deacidification. An acid agent; the pH value of the weakly acidic solution is 6.0-6.5; 2) After the paper is naturally dried, the surface of the paper is treated with reducing plasma. This method can remove excess deacidification agent on the surface of paper without affecting the deacidification effect of paper, prevent severe yellowing of paper after deacidification, and repair the yellowing area of ​​paper after deacidification, so that the paper The surface returns to the state before deacidification.

The invention relates to the technical field of food preservation, and provides a chitosan preservation method for shallots. According to the research of the present invention, it is found that a high concentration of chitosan (a mass concentration of more than 1.0%) will instead accelerate the rot and yellowing speed of the shallot and reduce the storage time. After the chitosan solution of suitable concentration (mass concentration of 0.2% to 0.75%) is used to treat the shallot, a semi-permeable membrane with suitable thickness can be formed on the surface of the shallot, which can not only satisfy the normal and slow aerobic respiration of the leaves of the shallot, but also be able to Reduce water evaporation, reduce the invasion of bacteria, so as to achieve the purpose of prolonging the storage time of scallions and prolong the shelf life of scallions. By adopting the method of the invention, the effective storage period of the shallot can be extended to about 15 days, and the fresh-keeping method is safe, reliable, low in cost and easy to operate.

The invention discloses a fresh-keeping method of rumex hanus. The method comprises the following steps: a, selecting rumex hanus leaves without mechanical damage and pest and disease damage; b, evenly spraying a preservative to the surfaces of the rumex hanus leaves, wherein the preservative is prepared from propionic acid with the concentration of 0.01%-0.5% by mass, forchlorfenuron with the concentration of 10-50 ppm and adenosine triphosphate with the concentration of 10-100 ppm; and c, airing the rumex hanus subjected to preservation treatment, putting the rumex hanus into a water-locking and breathable functional packaging bag, putting 1-methylcyclopropene into the packaging bag until the final concentration is 1-30 ppm, tightening the packaging bag, and storing the rumex hanus. When the rumex hanus is stored and preserved by adopting the method, after the rumex hanus is stored for 60 days under a low-temperature condition, the rotting rate is reduced by 95%, and the leaf yellowing rate is relatively reduced by 95%; and the rumex hanus can be stored for 10 days at normal temperature, the rotting rate is reduced by 50%, and the yellowing rate is relatively reduced by 85%.

The invention discloses a cool-season-type grassland slow-release fertilizer which is prepared from raw materials in parts by weight: 36-38 parts of corrupt leaf earth, 2-3 parts of disodium ethylene diamine tetraacetate, 42-45 parts of rice straws, 22-23 parts of fresh green tea leaves, 10-12 parts of fresh orange peel, 8-9 parts of potassium nitrate, 0.6-0.8 part of ascorbic acid vitamin C, 30-33 parts of sawdust, 3-4 parts of sodium polyphosphate, 1.5-1.7 parts of acetic anhydride, 0.2-0.3 part of 4-dimethylamino pyridine, and an appropriate amount of water. The slow-release fertilizer meets the fertilizer requiring characteristics of cool-season-type grassland, and reduces the withering rate of the grassland in winter; the fresh orange peel and other fermentation products under the complexing action of disodium ethylene diamine tetraacetate reduce the direct nutrient release of the fertilizer in soil and change the supply of easy-to-absorb nutrient elements to the grassland at a low speed, so that the disease resistance and the heat-resisting ability of the grassland in summer are improved, and the yearly green period of the grassland is prolonged.

The efficient agrobacterium tumefaciens-mediated melon genetic transformation method comprises the following steps: S1, selecting seeds, sterilizing, inoculating the seeds to a seed germination culture medium MeM1, and carrying out dark culture for later use; s2, performing dip-dyeing on cotyledon explants cut off from the robust melon seedlings growing in the step S1 by using an agrobacterium dip-dyeing culture medium IM suspension bacterium solution, and finally, putting the dip-dyed cotyledon explants into an agrobacterium co-culture medium MeM2 for co-culture for later use; s3, placing the cotyledon explant subjected to co-culture in the step S2 on an induced bud regeneration culture medium MeM3 for culture, and subculturing once every two weeks for later use; s4, cutting off bud clusters regenerated on the culture medium in the step S3, putting the bud clusters into a bud extension culture medium MeM4, continuously screening and culturing, and transferring the buds into a rooting culture medium until the buds extend to 2cm; s5, transferring the buds obtained in the step S4 to a rooting culture medium MeM5 for growth, and then transferring the buds into a nutrition pot for culture; the method has the advantages that the method is suitable for both thin-peel muskmelons and thick-peel muskmelons, and the yellowing rate of regenerated buds is as low as 1.6%.

The invention provides a fading repair method suitable for yellowing of deacidified paper, which comprises the following steps of 1) atomizing a weak acid solution, uniformly spraying the atomized weak acid solution on a yellowing area on the surface of the deacidified paper, and neutralizing an excessive deacidification agent, and enabling the pH value of the weak acid solution to be 6.0-6.5, and 2) after the paper is naturally dried, treating the surface of the paper by using reductive plasma. According to the method, the excessive deacidification agent on the surface of the paper can be removed under the condition that the deacidification effect of the paper is not influenced, the paper is prevented from seriously yellowing after deacidification, and the yellowing area of the paper after deacidification is subjected to color fading repair, so that the surface of the paper is recovered to the state before deacidification.

The invention relates to a process for washing vulcanized black denim garments. The process comprises the following steps: placing pretreated denim garments in a desizing solution, performing desizing treatment at 0-60°C for 10-30 minutes, draining and washing with water at normal temperature; Put the denim garment after desizing treatment in the enzyme solution, treat it at 30-40°C for 15-60 minutes, drain and wash it with clean water at room temperature; place the denim garment after enzyme washing treatment in the rinse solution, and treat it at 40-50°C 10‑50 minutes, drain and wash with water at normal temperature; add dechlorination and deodorant to the rinsed denim garments, treat at 30‑40°C for 5‑15 minutes, drain and wash with normal temperature water; neutralize denim garments once After dehydration and drying, spray the PP solution on the denim garment surface and wash it with water; treat the denim garment sprayed with PP with hydroxylamine sulfate at 20-50°C for 5-15 minutes, drain and wash with water at room temperature; After the processed denim garment is post-treated, it can be dehydrated and dried. Compared with the prior art, the process of the invention is environmentally friendly and safe, and the denim garment has better performance.

The invention discloses a Chinese herbal compound coating agent for keeping pigeon eggs fresh and a preparation method thereof. 0.025%‑0.1%, Mountain Silver Flower Extract 0.025%‑0.1%, Peppermint Extract 0.025%‑0.1% and Calamus Extract 0.025%‑0.1%, Chitosan 2%, Bone Collagen Powder 2%, Acetic Acid 1.06 %, glycerin 1.3%, and the rest is pure water. The present invention uses the wild chrysanthemum extract as the main ingredient, and through the indicators such as mass loss rate, egg white pH, Hough unit value, egg yolk index, loose yolk rate, and sensory evaluation, the The fresh-keeping effect of the coating agent on pigeon eggs provides a basis for prolonging the shelf life of pigeon eggs.

The invention discloses an anti-yellowing finishing process for light-colored fabrics. The anti-yellowing finishing process is implemented by adding an optimized anti-yellowing finishing process for four times in processing, dyeing and finishing processes of common light-colored fabrics, specifically, firstly, carrying out an anti-yellowing one-bath process simultaneously a dyeing process is performed, secondly, carrying out an anti-yellowing soaking process before soaping is performed, thirdly, carrying out an anti-yellowing one-bath process while the last washing process is performed, and finally carrying out an anti-yellowing finishing process in a heat setting process. The optimization of the four-time anti-yellowing finishing process effectively reduces the probability of yellowing of the light-colored fabrics, so that finished fabric products are balanced in color; the anti-yellowing finishing process for the light-colored fabrics disclosed by the invention has the advantages of environmental friendliness and high quality, and has strong practicability.

The invention provides a resin composition, a master batch containing the same, and application. The resin composition comprises matrix resin, an organic alkali compound and a cross-linking agent, the pKa of the organic alkali compound at 25 DEG C is 7.4-14.5, and the weight ratio of the matrix resin to the organic alkali compound is 100: (0.01-3). When a specific content of guanidine compound is added, the light transmittance of an adhesive film formed by the resin composition can be improved, and meanwhile, the yellowing rate is relatively low. Meanwhile, as the guanidine compound has relatively strong alkalinity, the guanidine compound can react with acetic acid generated by Norrish type II deacetylation reaction of the ethylene-vinyl acetate copolymer (EVA) in the application process, so that the corrosion resistance of an adhesive film formed by the resin composition is improved. In conclusion, the adhesive film formed by adopting the resin composition has the advantages of good yellowing resistance, high light transmittance, corrosion resistance and the like.

The invention belongs to the field of storage, transportation and preservation of flowers, and specifically discloses a method for storage, transportation and preservation of lotus and lucky bamboo. After the present invention uses 100-400 mg / L AgNO3 to treat the lotus lucky bamboo, the yellowing rate of the lotus lucky bamboo changes in the range of 0.97-11.08% after 10 days of preservation, and its yellowing rate can be significantly reduced compared with that not treated with AgNO3, Good fresh-keeping effect, convenient storage and transportation.

The invention discloses a white anti-yellowing cow split leather processing formula, processing technology and equipment, and relates to the technical field of leather processing.The processing formula comprises, by weight, 12-20 parts of high-viscosity polyurethane resin, 2.3-5.8 parts of yellowing-resistant ultra-soft comprehensive resin, 9-12 parts of ethylene glycol, 0.1-1.5 parts of salicylic acid, 1 to 5 parts of a pH regulator, 0.01 to 0.05 part of zinc oxide, 0.02 to 0.06 part of white carbon black, 0 to 10 parts of a surfactant, 0.8 to 3.2 parts of 3-mercaptopropionic acid, 30 to 70 parts of water and 0.05 to 0.08 part of a thickening agent. Zinc oxide and white carbon black are used as the matting filler, after the matting filler is uniformly dispersed, light rays can be refracted, the light rays are prevented from irradiating the cow split leather, meanwhile, 3-mercaptopropionic acid and salicylic acid are used as the anti-ultraviolet agents, ultraviolet rays can be easily absorbed through cooperation of the 3-mercaptopropionic acid and the salicylic acid, ultraviolet rays irradiated on the cow split leather are reduced, the yellowing speed of cow split leather products is reduced, and the yellowing resistance improvement effect is good.

The invention discloses a fresh-keeping method for leaf-eating grass. a, select leaf-eating grass blades without mechanical damage and damage by diseases and insect pests; b, spray antistaling agent evenly on the surface of leaf-eating grass blades, and described antistaling agent contains propionic acid, and its concentration is 0.01%-0.5% by mass; Chlorine Phenylfenuron, its concentration is 10-50ppm; Adenosine triphosphate, its concentration is 10-100ppm; c, dry the leaf-eating grass after fresh-keeping treatment again, put into the function packing bag of water-locking breathable, put again Add 1-methylcyclopropene so that the final concentration is 1-30ppm, tie up the packaging bag, and store. The method of the present invention is used to store and keep the leaf-eating grass fresh. After storage at low temperature for 60 days, the rot rate is reduced by 95%, and the yellowing rate of the leaves is relatively reduced by 95%. It can be stored for 10 days at normal temperature, and the rot rate is reduced by 50%. %, the yellowing rate is relatively reduced by 85%.

The invention discloses a method for preparing photosensitive resin for solder mask ink. The method comprises the following steps: (1) carrying out a ring-opening reaction by taking acrylic acid and o-cresol formaldehyde epoxy resin as raw materials, and adding a polymerization inhibitor hydroquinone and a catalyst tetraethylammonium bromide into the reaction process, thus obtaining a prepolymer A; (2) performing chain extension by using a small molecular weight polyurethane prepolymer of which a polyether or polyester opposite terminal group is an NCO group, thus obtaining a prepolymer B; and (3) enabling the prepolymer A and the prepolymer B to react, and adding tetramethylbenzene and a catalyst dibutyl tin dialurate into the reaction process. Compared with the prior art, the method has the advantages that the production period is short, and the obtained photosensitive resin has the advantages of high-temperature resistance, yellowing resistance, high adhesive force and good insulating performance.