319results about How to "Improve stress resistance" patented technology

The invention discloses a sugarcane fertilizer for preventing and treating soil insects and a production method of the sugarcane fertilizer. The sugarcane fertilizer comprises the following ingredients: inorganic fertilizer, organic fertilizer, reagents, plant growth regulating agents and bonding agents, wherein the inorganic fertilizer accounts for 45 to 92 weight percent of the total weight of the sugarcane fertilizer, the organic fertilizer accounts for 7 to 50 weight percent of the total weight of the sugarcane fertilizer, the reagents account for 0.25 to 3.5 weight percent of the total weight of the sugarcane fertilizer, the plant growth regulating agents account for 0.04 to 0.05 weight percent of the total weight of the sugarcane fertilizer, and the bonding agents account for 0.075 to 3.0 weight percent of the total weight of the sugarcane fertilizer. The reagents are combination of phoxim, chlorpyrifos and imidacloprid or dinotefuran according to a weight ratio of (1-2):1:(0.1-4.5), and the plant growth regulating agents are sodium nitrophenolate. Products of the sugarcane fertilizer fully meet the requirement on the nutrition in the sugarcane growth process, simultaneously, the effects of preventing and treating sugarcane insects such as stem borers, sugarcane turtles and grubs and treating insects such as cotton aphids, longicorns and the like can be realized, the yield and the sugar content are improved, and the production cost is also reduced.

The invention discloses a base fertilizer type eucalyptus ecological fertilizer, comprising an inorganic fertilizer, an organic fertilizer and a bonder. The effective ingredients of the inorganic fertilizer contains following elements in mass percents of: major elements of 0-7 percent of N, 0-10 percent of P2O5 and 0-4 percent of K; secondary elements of 0.35-9.50 percent of Mg, 0.80-19.00 percent of Ca and 1.85-5.00 percent of S; and trace elements of 0.020-0.05 percent of B, 0.020-0.050 percent of Zn and 0.00-0.05 percent of Cu. The organic fertilizer is prepared from ammonium sulfate type compound amino acid, humic acid and humates or peat soil, and organic materials. According to the base fertilizer type eucalyptus ecological fertilizer disclosed by the invention, the nutrition constituents requested by the eucalyptus young growth are sufficiently met; the soil is improved and the use ratio of a topdressing fertilizer is improved for follow-up application and topdressing; the wastage rate of the fertilizer is decreased; the plant resistance is enhanced, and the growth rate is improved; and the waste of the fertilizer and the environmental area-source pollution are reduced.

The present invention discloses an antistress health-care preparation for shrimps and crabs. Its composition includes (by wt%) 70%-90% of glucose, 0.5%-1% of rhubarb, 0.5%-1% of garlic, 0.3%-0.5% of astragalus root, 0.3%-0.5% of forsythia fruit, 0.3%-0.5% of vitamin C and 0.3%-0.5% of vitamin E, and the rest is diluent. It can raise immunity and antistress power of aquiculture animals of shrimps and crabs, and can promote their growth. Said invention also provides the application method of said health-care preparation.

The invention provides a continuous wave slurry pulse generator. A power and transmission device is arranged at the bottom; a pressure balancing and sealing module is arranged in the middle; a rotary valve is arranged on the top; the power and transmission device is composed of a motor driver, a motor assembly, a universal coupler, a secondary sealing transmission shaft and a main transmission shaft; the motor assembly is fixedly arranged in a pressure-resisting cylinder; the secondary sealing transmission shaft is connected with the motor assembly through the universal coupler; the pressure balancing and sealing module is composed of the pressure-resisting cylinder, a balancing piston and a high-pressure plug; the pressure-resisting cylinder is provided with a pore path through which the slurry flows; the pressure-resisting cylinder is provided with a pore path through which the hydraulic oil flows; and the rotary valve is composed of a stator, a rotor and a sleeve. The continuous wave slurry pulse generator is simple in structure, is reliable in working and is suitable for a wireless system for measuring while drilling. The problems of low speed and high error rate for information transmission are solved.

The invention relates to an organic-inorganic water-soluble fertilizer and a preparation method thereof. The invention aims at solving the problems that an common organic fertilizer is great in labor intensity in use, inconvenient to use and unobvious in effect, as well as the problems that the soil environment is degraded and the crops quality is reduced caused by the singly using lots of existing inorganic water-soluble fertilizers. The organic-inorganic water-soluble fertilizer is formed by mixing inorganic nutrients, organic nutrients and synergist. And the method comprises the following steps: weighing a water-soluble nitrogen fertilizer, a full-soluble phosphatic fertilizer, a full-soluble potassium fertilizer, synergist and potassium fulvic acid in parts by weight: uniformly mixing the water-soluble nitrogen fertilizer, full-soluble phosphatic fertilizer, the full-soluble potassium fertilizer and the synergist and then grinding, and adding potassium fulvic acid to uniformly mix to obtain the organic-inorganic water-soluble fertilizer. The method is mainly used for preparing the organic-inorganic water-soluble fertilizer.

The invention relates to a laminated microneedle system and a preparation method thereof and belongs to the technical field of medical devices. A laminated structure, namely an outer layer and an inner layer of a needle body, is prepared from a soluble natural polymer material or a high molecular polymer. The outer layer of the needle body for wrapping a target drug has good soundness, can easily penetrate keratoderma, can be rapidly dissolved in a skin environment rich in water, and exerts an effect of releasing the target drug. The inner layer of the needle body cannot penetrate skin and therefore is free of the target drug. The system can strengthen a skin penetration effect of the needle body and reduce waste of the target drug at the same time. A base of the system has better compression resistance, and the problem of frangibility of the base under pressure is improved. The preparation method is easy, avoids high-temperature treatment, facilitates keeping activity of the target drug and is easy and simple to operate.

This invention discloses a humic acid agroforestrial water-retaining ecological treating agent, belonging to the agroforestrial water-retaining ecological treating agent technological field. In order to solve the problems of current water-retaining agent, such as poor salt and alkaline resistance, harden soil and high cost of production, this invention proposes that it can use humate, acroleic acid and acrylamide as raw material to produce the humic acid agroforestrial water-retaining ecological treating agent by solution polymerization with presence of cross linker and initiator. The agent not only has a high water absorption ratio, but can improve the soil physicochemical properties, plant nutritional quality, drought resistance and soil moisture conservation, which can efficiently stimulate plant growth and improve water utilization efficiency so as to achieve the effects of increasing both production and income.

The invention discloses anti-continuous cropping and continuous cropping fertilizer and a production method, bacterial fertilizer is composed of the bacterial liquid of azotobacter chroococcus, bacillus cereus and silicate bacteria and carrier, trace fertilizer is composed of borax, ammonium molybdate, zinc sulfate, SiO₂, CaO, MgO and carrier, and then the bacterial fertilizer and the trace fertilizer are mixed to produce the fertilizer. The invention as the bio-enzyme preparation has no side effect of toxicity and can effectively resolve the problems of the continuous cropping harm and continuous cropping barrier of crops. The invention has a specific effect on resolving the salinization and sub-salinization of soil in a greenhouse and can regulate the abilities of nutrient absorption and disease resistance of soil. The invention can effectively restrain the growth of harmful pathogens, such as soil nematodes, etc. and rapidly promote the propagation of beneficial microorganisms. The invention can promote the rootage of plants and increase the survival rate of seedlings. The invention perfectly resolves problems of the continuous cropping harm and low yields of manifold crops, such as corn, paddy, soybean, coarse cereals, vegetables, etc.

The invention relates to the technical field of biology, and particularly relates to a straw decomposition agent and a producing method thereof. The straw decomposition agent includes peat and a microbial flora containing a bacteria active ingredient, the bacteria active ingredient is bacillus, trophozoite or spore; wherein the microbial flora includes trichoderma harzianum, bacillus subtilis, saccharomyces cerevisiae and metarhizium anisopliae; and the microbial flora content is: 50-500 million / g peat. The straw decomposition agent plays the role of decomposition of straw and also has the effect of inhibition of the growth and reproduction of diseases and insect pests.

The invention discloses a nano-carbon fertilizer special for paddy rice. The nano-carbon fertilizer special for paddy rice comprises the following components in percentage by weight: 20-40 percent of urea, 5-15 percent of diammonium phosphate, 10-20 percent of calcium magnesium phosphate, 10-30 percent of potassium chloride, 1-18 percent of borax, 1-10 percent of a sulfate fertilizer, 3-10 percent of nano-carbon, 6-20 percent of an organic fertilizer, 8-20 percent of medical stone and 3-10 percent of nitrogen-fixing bacteria. By using the nano-carbon fertilizer, the yield of paddy rice can be increased by 30-45 percent. Compared with the conventional fertilizer, the nano-carbon fertilizer has the advantages that the using amount of the fertilizer is saved by 30-50 percent, and cadmium in soil can be removed effectively.

The invention discloses a neutral compound fertilizer which is composed of 10-80 parts of nitrogenous fertilizers, phosphate fertilizers and potash fertilizers, 0-10 parts of microelement fertilizers, 1-7.5 parts of citric acid solvent magnesium oxide, 0-20 parts of humic acid and 0-0.08 part of plant growth regulator according to weight. The neutral compound fertilizer nutritionally balanced by comprising major elements needed in crop growth as well as microelements and secondary elements indispensable in crop growth, and can reduce fertilization times and save labor. The citric acid solvent magnesium oxide is creatively added so as to neutralize the acid radical in the fertilizer and make the produce to be physiologically neutral. Therefore, the neutral compound fertilizer can provide necessary magnesium nutrients for crops, improve the acid-base property, promote photosynthesis and enzyme activation, hasten crop growth, improve crop resistance, avoid soil acidification and soil salt and alkali accumulation, increase output, improve the quality and achieve yield increase and income increase. The neutral compound fertilizer does not need additional equipment in production and is simple in process, low in cost, high in added value and wide in the application prospect.

The fertilizer specially for eucalyptus consists of saccharomycetes, organic matter, humic acid, nitrogen fertilizer, phosphate fertilizer, potash fertilizer, etc. The present invention has the following advantages of capacity of meeting the requirement for eucalyptus to grow to raise the growth of eucalyptus by over 20 %; lowered fertilizer applying cost; capacity of raising the resistance of eucalyptus to control diseases; and capacity of improving soil, raising water and fertilizer keeping ability of soil and protecting environment.

The invention discloses an aluminium screw-on packaging jar, which comprises a jar bottom. The aluminium screw-on packaging jar has the essential scheme that the jar bottom is provided with a bottom side which is moulded downwards in an extruding manner and is protruded out of the jar bottom downwards; the edge of the bottom side extends upwards to form a jar cylinder; the jar cylinder is shrunk upwards to form a jar shoulder; the jar shoulder is shrunk upwards to form a jar neck; the jar neck is = provided with an annular groove and an inclined bulge loop which is arranged at the upper end of the annular groove to incline upwards; an external thread is arranged at the upper end of the inclined bulge loop of the jar neck; a jar opening with a lip is arranged at the opening end of the jar neck in a flanging manner. The invention further discloses a manufacturing method for the aluminium screw-on packaging jar. The method comprises the following steps: a, cutting; b, stamping; c, stretching the jar cylinder; d, finishing and polishing; f, cleaning; g, protecting; h, necking and moulding; and i, cleaning and leak hunting. The aluminium screw-on packaging jar has advantages of high anti-pressing and anti-twisting strength, simple structure, anti-counterfeiting performance and simplicity in manufacturing.

A net-like structure particularly for geotechnical applications which comprises a first and a second layer which are mutually spaced and joined one another by spacers which are co-extruded together with the layers. At least one of the layers comprises at least one set of yarns arranged at one end of the spacers; the spacers have a reduced transverse cross-section.

The invention discloses a preparation method of a leaf vegetable nano leaf fertilizer. According to the method, raw materials are smashed and decomposed into nano-scale materials through high-temperature stirring, electron beam irradiation and ultrasonic treatment based on lignin containing a net structure and active radicals in papermaking black liquid, and the adsorptive property of the lignin is increased, so that a phosphate fertilizer, a nitrogen fertilizer, a potash fertilizer, imino disuccinate chelated microelements, two conditioners such as rapin and biochemical fulvic acid and nanometer titania are adhered and bonded together to prepare the leaf vegetable nano leaf fertilizer. The preparation technology is simple, low in cost and high in controllability, the prepared leaf vegetable nano leaf fertilizer is scientific in proportioning of the raw materials and high in total nutrient content, the product is mixed with water, the mixture is sprayed and applied onto leaves of leaf vegetables, so that on one hand, nutrients of the leaf fertilizer can be fixed on the leaves, drifting, leaching loss and evaporation of the fertilizer are reduced, on the other hand, nutrient absorption and movement inside the leaves of the leaf vegetable fertilizer can be promoted, and the absorption and utilization rate is high.

The invention relates to the technical field of engineering construction and maintenance, and especially relates to a modified emulsified asphalt paint which is widely applicable to the fields of water proofing, crack pouring, leakage mending, bonding, heat isolation, antifreezing and thermal insulation of surfaces of highway, bridges, and buildings; 5%-10% of polymer-modified materials of liquidrubber emulsion are added into the emulsified asphalt (containing 30%-70% of solid asphalt) to increase bonding force; 10%-20% of modifiers are added; 3%-20% of hollow glass beads are added, and the mixture is mixed uniformly; finally ore sand and quartz sand with different particle sizes and with an amount of 100%-200% of the total amount of the mixture are added. The paint can prolong the service life of asphalt pavement, and increase the friction coefficient of the pavement and the compressive resistance and impact resistance of the coating; the hollow honeycomb structure can not only achieve the effect of noise reduction, but also perform thermal insulation for the pavement so as to prevent the asphalt concrete layer from being damaged by high-temperature softening of the pavement in summer and from generating ruts, or reduce the damage and ruts of the asphalt concrete layer; and the paint can also prevent the damage due to low-temperature embrittlement in ice and snow in winter.

The invention provides a red pulp honey pomelo seedling breeding method and belongs to the field of crop planting. The seedling breeding method comprises the steps of selecting a land suitable for redpulp honey pomelo growth to carry out preparation, adding a biological fertilizer fermented by 40-45 parts of banana stalk, 20-25 parts of peanut shell, 10-15 parts of pond sludge, 8-10 parts of vinasse dregs, 10-15 parts of fungi bag powder, 10-15 parts of human excreta, 35-40 parts of goat manure, 0.05-0.08 part of complex microbial inoculant and 12-15 parts of plant extract into a planting pit, transplanting rootstock seedlings which grow to 20-25cm into the planting pit, and finally, selecting red pulp honey pomelo scions free of plant diseases and insect pests to conduct grafting. The red pulp honey pomelo seedling breeding method can allow seedlings to grow to trees in advance, increase the survival rate of rootstocks and red pulp honey pomelo plants, improve disease-resistant performance, prevent plant diseases and insect pests and save production costs and is suitable for large-scale systematic planting.

The invention discloses a microelement-rich compound coated fertilizer for crops and a preparation method of the compound coated fertilizer. The compound coated fertilizer is characterized by being prepared from the following raw materials in parts by weight: 26-30 parts of urea, 16-23 parts of ammonium nitrate, 10-13 parts of a calcium magnesium phosphate fertilizer, 3-5 parts of magnesium sulfate, 1-2 parts of zinc sulfate, 2-3 parts of chelate iron, 1-2 parts of sodium molybdate, 1-2 parts of ammonium molybdate, 2-3 parts of copper oxide, 34-36 parts of yellow phosphorus slag, 8-10 parts of an soil improver and a proper amount of water. According to the compound coated fertilizer, the base calcium magnesium phosphate fertilizer is fused with fertilizers of microelements such as magnesium, zinc, iron and molybdenum, so that the stress resistance of the crops is improved, the metabolism of the crops is promoted, and the yield of the crops is increased; the coated fertilizer has a certain slow-release effect, the fertility is slowly released, and the fertilizer is neutral, has an improvement effect on alkaline soil and cannot cause soil hardening.

The present invention discloses a compound feed for improving growth performance of weaned piglets and a preparation method thereof, and belongs to the technical field of livestock feed. The compound feed comprises the following components by mass: 44-48.6 parts of corn, 13-14 parts of soybean meal, 15-20 parts of extruded corn, 8 parts of fermented soybean meal, 3 parts of fish meal, 5 parts of extruded soybean, 2.5 parts of whey powder, 0.7-0.75 part of stone powder, 1.3-1.4 parts of calcium hydrogen phosphate, 0.4-0.45 part of lysine hydrochloride, 0.1-0.2 part of threonine, 0.2-0.3 part of methionine, 0.4 part of an acidifier and 0.75 part of a premix. According to the present invention, the compound feed for improving growth performance of weaned piglets uses the extruded corn, the extruded soybean, the fermented soybean meal, the fish meal, the whey powder and other nutritious ingredients which are easy to digest, can effectively complement amino acids and fats needed for growth and development of the piglets, and maintain intestinal health of the piglets. The feed can increase stress resistance and growth performance of piglets, reduce feed consumption, and improve feed utilization rate.

The invention discloses a rice disease gene upg8 and an application thereof. The upg8 gene mutates, so that the rice generates typical PCD (polymerase chain reaction) characteristics; transgenic rice for over-expression of the upg8 gene is created by a transgenic technology; and the obtained transgenic plant has tolerance on a plurality of environmental stresses. Therefore, the upg8 gene has good application value in the aspects of plant and crop varieties with enhanced cultivating resistance.

The invention discloses a compound feed for sows at a perinatal period. The compound feed is prepared from the following raw materials in parts by weight and compounding ratio: 54 parts of corn, 15 parts of soybean meal, 11.47 parts of bran, 8 parts of middling, 1 part of soybean oil, 1 part of fish oil, 1 part of glucose, 4 parts of soybean fibers, 0.4 part of table salt, 0.2 part of choline, 0.3 part of stone powder, 0.5 part of dicalcium phosphate, 0.5 part of calcium dihydrogen phosphate, 0.15 part of magnesium chloride, 1.6 parts of calcium chloride, 0.2 part of an acidulant, 0.2 part of a mildewproof agent, 0.1 part of lysine, 0.01 part of threonine, 0.01 part of an enzyme preparation, 0.05 part of a mildew removing agent, 0.0125 part of an antioxidant, 0.02 part of organic chromium, 0.01 part of microzyme, 0.01 part of a viable bacteria preparation, 0.012 part of a plant extract, 0.01 part of VE, 0.01 part of biotin, 0.2 part of various mineral trace elements, and 0.035 part of various micro vitamins. After the feed is eaten by the sows at the perinatal period, the attack probability of sow perinatal period syndromes can be obviously reduced.

The instant invention includes an article and a method of forming the article. The article includes a mixture of a thermoplastic polyurethane and polyamide 6/66 copolymer. The thermoplastic polyurethane has a Shore Hardness of at least 36D as determined using DIN EN ISO 1183-1.

The invention discloses a cistanche salsa planting method. The cistanche salsa planting method includes the following steps that first, seeds are treated, wherein cistanche salsa seeds are soaked with a mixed solution of VitaCat and High Yield solution to be treated for 1.5 h to 2.5 h, and the soaked cistanche salsa seeds, the mixed solution for treatment and fine sand are fully stirred to be evenly mixed; second, planting holes are handled, planting holes with the centers 45 cm to 55 cm away from trunks of hosts are dug, the planting holes are 40 cm to 50 cm long, 25 cm to 35 cm wide and 45 cm to 55 cm deep, the bottoms of the planting holes are made to be slopes, the included angles between the slopes and the horizontal plane range from 40 degrees to 50 degrees, and the bevels are opposite to the hosts; third, the roots of the hosts are handled, wherein the roots broken due to digging on the sections of the planting holes are pruned through a pruner, and then GGR solution is sprayed onto the roots of the hosts on the perpendicular sections of the planting holes; fourth, the seeds are scattered and planted, wherein the cistanche salsa seeds treated in the first step are scattered onto the bevels of the bottoms of the planting holes, and the planting holes are backfilled. The cistanche salsa planting method is easy and convenient to operate and low in cost, and the cistanche salsa survival rate can reach 95%; according to the method, sacsaoul and tamarix are used as the hosts for planting cistanche salsa, and high economic benefits are achieved.

The invention discloses a siliceous anti-cracking compacted waterproof agent for mortar concrete and a preparation method thereof. The siliceous anti-cracking compacted waterproof agent is prepared from the following components in parts by weight: 10 to 15 parts of micro-silicon powder, 10 to 15 parts of activated modified nano silicon dioxide, 0.1 to 0.3 part of super-plasticizer, 0.1 to 0.3 partof viscosity reducer and 75 to 80 parts of mineral admixture; the mineral admixture is prepared from the following components in parts by weight: 36 to 42 parts of mineral powder and 38 to 45 parts of fly ash; the activated modified nano silicon dioxide is prepared from the following components in parts by weight: 70 to 75 parts of nano silicon dioxide, 0.5 to 0.7 part of silane coupling agent, 1.2 to 2 parts of isopropyl alcohol and 5 to 8 parts of caustic soda flakes. By adopting the siliceous anti-cracking compacted waterproof agent, the compactness and the permeability resistance of the concrete and a mortar material can be increased; cracks are reduced and the waterproof performance is enhanced.

The invention discloses a polytetrafluoroethylene composite, a polytetrafluoroethylene composite holder for a bearing and a preparation method of the polytetrafluoroethylene composite holder for the bearing. The polytetrafluoroethylene composite is prepared from, by mass, 3%-8% of coupling agent modified nano aluminum oxide, 2%-5% of molybdenum disulfide and 90%-95% of polytetrafluoroethylene. The polytetrafluoroethylene composite is prepared by compounding polytetrafluoroethylene, coupling agent modified nano aluminum oxide and molybdenum disulfide. Nano aluminum oxide is large in heat conductivity and small in grain size, the crushing resistance, heat conductivity and wear resistance of the composite can be remarkably improved, the material surface activity can be improved after nano aluminum oxide is modified with a coupling agent, and surface binding force is increased. The friction and wear resistance of the composite can be enhanced through molybdenum disulfide; the composite has excellent self-lubricating performance and high tensile strength, crushing resistance, heat conductivity and friction and wear resistance are obviously improved, and the requirement of the ultralow-temperature high-speed bearing on the holder is met.

The invention relates to special concentrated feed for anti-heat stress breeding boars, and belongs to the technical field of livestock feeds. The special concentrated feed for anti-heat stress breeding boars is prepared from high protein soybean meal, small peptide protein, steam fish meal, dietary fiber, emulsified fatty powder, soybean oil, mountain flour, calcium hydrophosphate, sodium chloride, glucose, lysine, N-carbamylglutamic acid, composite inorganic trace elements, composite organic trace elements, decavitamin, vitamin E, vitamin C, probiotics, choline chloride, macleaya cordata extracts, phytase and antioxidants. The special concentrated feed has the advantages that the cooperated effect of the recipe ingredients are emphasized; the physiological requirements of breeding boars under the heat stress condition can be met; the sperm viability is improved; the rate of teratosperm is reduced; the palatability is improved; under the multiplex nutrition measures, the semen quality of the breeding boars under the heat stress condition is effectively improved; the re-service rate of sows is reduced; and the annual farrowing number of the sows can be improved.

The invention discloses an oriental cherry planting method, which comprises the steps of (1) land preparation, (2) seedling planting, (3) disbudding and trunk settling, (4) winter fertilization, (5) spring fertilization, (6) pruning, (7) disease control and (8) pre-winter fertilization. According to the planting method disclosed by the invention, the planting survival rate of grafted seedlings is enabled to reach up to 99% through timely management for the grafted seedlings at different stages within two years of planting, and meanwhile, the stress resistance and the growth speed of the seedlings are improved through being matched with a specially-made oriental cherry special fertilizer. The seedlings can be in blossom in the third year of planting, the blossom time is one year earlier than common seedlings, and the blossom period is prolonged by 5-8 days, thereby having good economic benefits and ornamental values.

The invention provides a prefabricated superposed primary and secondary beam connecting piece. The prefabricated composite primary and secondary beam connecting piece comprises a supporting end, a prefabricated end and a connecting portion, wherein the supporting end is arranged on the upper surface of the prefabricated portion of a primary beam and is wrapped in the superposed portion of the primary beam, the prefabricated end is prefabricated on the prefabricated portion of a secondary beam and wrapped in the superposed portion of the secondary beam, the supporting end and the prefabricated end are connected through the connecting portion, and the connecting portion is wrapped in the superposed portion of the secondary beam. After concrete pouring of a primary and secondary beam superposed layer is completed, a firm whole of the primary beam and the secondary beam is formed. The combination strength between the connecting piece and the beams is high, and the tensile strength is high. In addition, the invention provides a prefabricated superposed primary and secondary beam connecting structure using the prefabricated superposed primary and secondary beam connecting piece, the prefabricated superposed primary and secondary beam connecting structure is high in structural strength and tensile strength, the prefabricated superposed primary and secondary beam is prevented from generating oblique cracks, and the loading capacity and the construction quality are improved.

The invention discloses a selenium-rich leaf fertilizer and a preparation method thereof, relating to the field of leaf fertilizers. The selenium-rich leaf fertilizer contains the following raw materials in parts by weight: 15-20 parts of potassium fulvate, 15-20 parts of sodium metasilicate, 8-15 parts of boric acid, 0.7-1.2 parts of selenium dioxide, 0.7-1.2 parts of sodium selenite, 5-10 partsof manganese sulfate, 3-8 parts of zinc sulfate, 10-16 parts of ammonium molybdate, 0.4-0.8 part of anion powder, 30-40 parts of potassium dihydrogen phosphate, 0.7-1.2 parts of a surfactant, 1.5-2.5parts of fish meal and 0.2-0.6 part of a functional aid. By virtue of synergetic cooperation effect of the components, important components such as silicon, selenium, molybdenum, manganese, boron, amino acid and auxin required by crops are effectively supplemented, the growth of the crops is promoted, and the stress resistance of the crops is improved.

The invention discloses a liquid crystal display panel and a spacer assembly thereof. The spacer assembly comprises an upper spacer and a lower spacer which are used for being fixed to an upper substrate and a lower substrate, the upper substrate and the lower substrate are oppositely arranged, the upper space comprises at least one first spacer part and at least one second spacer part, and the distance between the end face of the first spacer part and a pressing face is smaller than that between the end face of the second spacer part and the pressing face. Due to the fact that the segment difference is formed in the upper spacer, when the liquid crystal display panel is located under the low-temperature condition or bears dynamic pressure, the portion, with the minimum contact density or distribution density, of the upper spacer is firstly used for supporting, when the portion, closest to the pressing face, of the upper space bears pressure and certain deformation is generated, the portion, slightly farther away from the pressing face, of the upper spacer is used for supporting and bears part of pressure, the anti-pressure capacity of the liquid crystal display panel is improved, and high and low temperature LC margin ranges of the liquid crystal display panel can be both taken into consideration.