140results about How to "Improve absorption and utilization efficiency" patented technology

The invention discloses a compound microorganism fungicide for improving the water quality of a culturing water body and a preparation method. The compound microorganism fungicide is prepared by taking the strains by weight percent: bacillus subtilis, yeast, lactic acid bacteria, photosynthetic bacteria, nitrifying bacteria, bacillus licheniformis, and the like. The preparation method comprises the following steps of: firstly, culturing the bacillus subtilis and bacillus licheniformis: culturing the bacillus subtilis and bacillus licheniformis on a beef extract peptone culture medium; secondly, culturing the yeast: culturing the yeast on a lactic acid-potato-glucose culture medium; thirdly, culturing the lactic acid bacteria: culturing the lactic acid bacteria on a wort culture medium, inoculating on a triangular flask for culturing, and finally inoculating on a solid culture medium for culturing; fourthly, culturing the photosynthetic bacteria; fifthly, culturing the nitrifying bacteria; and sixthly, stirring and mixing the cultured strains by weight ratio, and drying at low temperature, thereby obtaining the compound microorganism fungicide. The formula is reasonable; the use is convenient; water is uniformly splashed; the method is easily performed; and the operation is convenient.

The invention discloses a compound microbiological preparation and a preparation method for controlling the excessive reproduction of blue-green algae. The preparation comprises the following compounds with a certain weight proportion of microbial agents, organic fermentation agents, brown sugar and micro elements. The preparation steps are as follows: A. the preparation of the microbial agent, B. the preparation of the organic fermentation agent, and then the microbial agent\ fermentation agent, brown sugar and the micro elements are mixed based on a certain weight proportion, and finally, the compound microbiological preparation can be prepared. The preparation has reasonable formulation, is convenient to be used, has no pollution to the water, has high control rate and low cost, and is easy and convenient to be operated.

The invention relates to honeysuckle tea, in particular to honeysuckle micro powder tea, and provides honeysuckle micro powder tea with a particle size of 18 micrometers. The honeysuckle micro powder tea is characterized in that the tea contains as high as more than or equal to 5 percent of chlorogenic acid, has pale green color and faint scent smell, and avoids precipitates and granular sensation after being infused. A production method comprises the following steps of: picking fresh flowers, green-removing by using microwaves, quick freezing and cooling, performing secondary drying, crushing twice and refrigerating at low temperature. Due to the function of clearing heat and detoxicating and resisting bacteria in broad spectra, the honeysuckle micro powder tea has excellent inherent quality and shape characteristic.

The invention relates to a method for producing protective vegetable fungus root sprout, comprising the following steps: 1) planting susceptive crop after inoculating the bush AMF for sterilized organic soil or soil, taking the strand roots of plant or fungus root spore as inoculating bacteria; 2) sterilizing seedling soil or medium; 3) loading the sterilized soil into dish, spraying the inoculating bacteria onto soil, 4) sowing on the dish, then covering with sterilized soil for seedling in greenhouse. The invention is characterized by the low cost, good popularity and simple operation. The bacteria can on one side increase the usage of nutrient and water and fertilizer under organic cultivating condition, which results in productivity and quality improvement of vegetable; on the other side can strengthen the disease and drought resistance, reduce disease spread through soil and improve vegetable root condition.

The invention discloses a powder element fertilizer as well as a preparation method and application method thereof. The method is characterized by comprising the following steps: uniformly mixing a soluble trace element fertilizer, a citrate-soluble trace element fertilizer, an acidifier and an anticaking agent to obtain a mixture, grinding and screening the mixture until the particle size is less than 150 meshes, thereby obtaining the powder trace element fertilizer; and coating seeds or other granular fertilizers with the powder trace element fertilizer. Compared with the prior art, the technique enhances the dispersion uniformity of the minor elements in soil and the absorption and utilization efficiency of the seeds for the minor elements, implements unification of the short-term fertilizer efficiency and long-term fertilizer efficiency, and reduces the problem of caking of the powder product in the use process.

The invention discloses a phosphorus transportprotein gene GmPT5 related to phosphorus transport of soybean nodulation and application thereof. The phosphorus transportprotein gene GmPT5 related to the phosphorus transport of the soybean nodulation has a nucleotide sequence as shown in SEQ ID NO:1, and coded protein nucleotide sequence is shown as SEQ ID NO:2. The gene GmPT5 regulates and controls the phosphorus transport from a root part to the nodulation, furthermore, the overexpression of the gene is favorable for increasing the size of the soybean nodulation and the plant biomass as well as the nitrogen and phosphorus contents.

The invention provides an amino acid-containing water soluble fertilizer added with sugar alcohol and a preparation method thereof. The amino acid-containing water-soluble fertilizer added with sugar alcohol is prepared from the following raw materials: amino acid, calcium salt and water as well as 5-10wt% of sugar alcohol. The amino acid-containing water-soluble fertilizer is of a calcium element type, the sugar alcohol is added to be used as a chelating agent of the calcium element; by virtue of reasonable ratio of sugar alcohol to amino acid to calcium salt, the sugar alcohol and the calcium element are chelated to form a stable micromolecule chelate; since sugar alcohol has permeation and wetting properties, absorption and transportation efficiency of the chelated calcium element is improved; meanwhile, amino acid can promote calcium absorption and also can promote photosynthesis, so that chlorophyll content is increased. Therefore, under the combined action of sugar alcohol and amino acid, the amino acid-containing water-soluble fertilizer added with sugar alcohol has high utilization rate, can improve the conveying speed of plant nutrients, can enhance calcium absorption of plants and can increase sugar content of the plants.

The invention discloses a liquid compound trace element fertilizer and a preparation method thereof. The fertilizer comprises the following ingredients by weight percent: 0-1.0% of citric acid, 0-1.0% of ascorbic acid (vitamin C), 0-1.0% of hydroxylamine hydrochloride, 0-1.0% of sorbitol, 0-1.0% of xylitol, 0-1.0% of mannitol, 0.46-38% of ferrous sulfate heptahydrate, 0.13-24% of manganese sulfate monohydrate, 0.18-3.3% of copper sulfate pentahydrate, 0.25-2.3% of zinc sulphate monohydrate, 0.25-4% of disodium octaborate tetrahydrate, 0.08-1.5% of ammonium molybdate, and the balance of pure water, wherein the dosage of the citric acid, the dosage of the ascorbic acid and the dosage of the hydroxylamine hydrochloride cannot be 0 at the same time, and the dosage of sorbitol, the dosage of xylitol and the dosage of mannitol cannot be 0 at the same time. According to the invention, an antioxidant prepared from one, two or more of the citric acid, ascorbic acid and hydroxylamine hydrochloride can effectively inhibit ferrous ions from being hydrolyzed into ferric ions, so that the iron ion absorption efficiency is improved, and the color of the product does not change at a high temperature; the raw material resources are rich, the production cost is low, and the equipment and production technologies are simple.

The invention provides blueberry selenium-rich leaf fertilizer, a preparation method and an application method. The blueberry selenium-rich leaf fertilizer, 100% in total, is prepared from, by weight, 1.0-8.0% of one or combinations of urea and ammonium sulfate, 1.0-10.0% of at least one or combinations of ammonium polyphosphate, monoammonium phosphate and diammonium phosphate, 5.0-15.0% of one or combinations of potassium sulphate and monopotassium phosphate, 1.0-10.0% of trace elements, 1.0-1.5% of sodium selenite, 1.0-10.0% of fulvic acid, 0.5-5% of sugar alcohol substances, 0.5-1.0% of surface activated agents and the balance water. The application method includes the steps of spraying the fertilizer in the blueberry primary flowering period and spraying the fertilizer in the fruit expanding period before blueberry picking. The selenium-rich leaf fertilizer is developed for the characteristic that blueberry crops need the fertilizer; the selenium-rich leaf fertilizer is high in specificity and can promote blueberry growth and increase the selenium content, anthocyanin content and soluble protein content in blueberries.

The invention provides a method for culturing selenium-enriched agarics by utilizing selenium-enriched crop straws. The method is realized by preparing culture materials by using basic culture materials and a selenium-enriched culture material additive. The method is characterized in that the selenium-enriched culture material additive accounts for 1-10% of the total weight of dry culture materials; the selenium content is 1-20mg / kg; the sizes of grains in the selenium-enriched culture material additive are in multi-size regional distribution in the range from 1.0mm to 5.0mm; and the selenium-enriched culture material additive is prepared from the straws of such crops as selenium-enriched wheat or corn with selenium content being 1-80mg / kg by grinding. The method has the following advantages: the agarics cultured by the method have high selenium absorption and utilization efficiency; the highest content of selenium in the fruiting bodies of the agarics can be 20 times that of selenium in the fruiting bodies of common culture groups; the organic selenium is as high as 90% of the total selenium; and in the growth periods of the fruiting bodies, the relative standard deviation (RSD) of the selenium contents of the fruiting bodies can be strictly controlled within 20%.

The invention relates to bacillus megaterium, a polypeptide agricultural microbial agent thereof as well as a preparation method thereof and applicationof the polypeptide agricultural microbial agent.The bacillus megaterium takes distillers' grains, soya bean meal and straw powder, which are rich in protein content, as main raw materials, and are mixed with corn flour, wheat bran, inorganic saltsand a few carbon source to reasonably compound and steam; high-yield protease bacillus subtilis is firstly utilized, the bacillus megaterium is utilized for decomposing different proteins in raw materials under a special fermentation condition to prepare the agricultural microbial agent which takes active peptides, amino acid, polysaccharides and the like as efficient ingredients; the microbial agent contains a great number of living spores, 17 free amino acids, a plurality of active peptides, and polysaccharides, and nutrient content is rich, the activity of thallus is high, and shelf life reaches two years or more; and according to the field experiment, the good effects of improving quality and increasing the yield are achieved.

The invention relates to a microbial agent for repairing garlic continuous cropping soil and a preparation method and application thereof. The microbial agent for repairing the garlic continuous cropping soil is prepared from, by weight, 15-35 parts of a streptomyces fradiae XFS spore mixture, 15-25 parts of an earthworm peptide-turfy soil mixture, 20-30 parts of wormcast, 15-25 parts of diatomaceous earth, 12-20 parts of grain bran, 5-12 parts of sodium alginate and 3-10 parts of potassium fulvic acid, wherein the number of effective viable bacteria of the microbial agent is 1.2-4.5 billion / g, the content of earthworm active peptide and amino acid is 2.5-5 wt%, and the content of organic matter is 40-60 wt%. The microbial agent can be used for repairing the garlic continuous cropping soiland can also be applied to vegetables, solanaceous fruits, melons, fruit trees and other crops, the application method is a base fertilizer mode or a topdressing mode, the microbial agent can also becompounded with organic fertilizer, compound fertilizer and organic and inorganic compounded fertilizer for use, and the application amount per mu is 10-100 Kg.

The invention relates to a method for improving pumping efficiency of a fiber laser and the fiber laser thereof, wherein the fiber laser comprises a preceding-stage low-power laser source, a plurality of semiconductor pumping lasers, a fiber beam combiner, an active double-clad fiber and an out isolator / collimator; a pumping light reflector is additionally arranged between the active double-clad fiber and the output isolator / collimator, and comprises a passive double-clad fiber, a clad fiber grating etched in the inner clad of the passive double-clad fiber, and a secondary coating layer for coating the clad fiber grating; the central reflecting wavelength of the clad fiber grating is equal to the pumping laser wavelength, and is in the range of 910-980 nm. The fiber laser adopts the inner clad fiber grating, and can reflect the residual pumping laser powder not adsorbed in the inner clad to the active double-clad fiber, so that the pumping light power can be adsorbed by the active fiber for the second time, and the absorption efficiency of the pumping laser in the fiber laser is effectively improved.

The invention provides a fertilizing method for planting cigar tobacco. The fertilizing method comprises the following steps of: firstly, early fertilizing base fertilizer: in 20-30 days before transplanting, trenching on the formed land with the interval of 110cm, the depth of 10-15cm and the width of 8-10cm, uniformly paving the base fertilizer at the bottom of the trench and ridging; secondly, applying seedling protecting fertilizer for transplanting: when small cigar seedlings are transplanted, dissolving ammonium nitrate into water, injecting the mixed solution and pesticide as transplanting water into the root parts of the seedlings, wherein 3-5kg of ammonium nitrate is fertilized in each mu; thirdly, irrigating roots by using seedling restoring fertilizer: in about 7 days after the tobacco seedlings are transplanted, irrigating the roots by using 5-7g / mu of potassium nitrate and an insect infestation resisting pesticide and then covering a layer of fine soil around tobacco roots; fourthly, timely applying seedling eccentric fertilizing; fifthly, digging holes and applying and burying growth flourishing fertilizer and irrigating by matching the growth flourishing fertilizer with biogas slurry; and sixthly, carrying out additional fertilizer and spraying at the mature stage. The fertilizing method disclosed by the invention has the advantages of simplicity in operation, standard specification, strong pertinency and greatly-improved yield and quality of cigar tobacco.

The present invention discloses a planting method for high-yielding rice, and the planting method includes the following steps: A, planting broad beans in rice fields, harvesting the broad beans, conducting green manuring and water retting on the harvested broad beans, and applying base fertilizers to the rice fields; and conducting water control on rice seedlings with a seedling age of 15-20 days and a seedling acclimatization for 2-3 days; B, conducting rotary tillage, ridge separating and irrigation on the rice fields, and transplanting the rice seedlings; C, topdressing the rice seedlings with compound fertilizers to promote rice tillering after roots and stems of the rice seedlings are living; D, maintaining a water level of the rice fields at 3-5 cm during the rice tillering stage, topdressing the rice seedlings with urea, potassium chloride and calcium superphosphate, topdressing the rice with N-P-K compound fertilizers with an amount of 80-110 kg / mu and spraying biological pesticides when the rice is in the heading stage; topdressing the rice with the compound fertilizers mentioned in step C with an amount of 25-40 kg / mu when the rice is in the irrigation stage; and cutting off the water supply and drying the rice fields 7-10 days before rice maturity, and harvesting the mature rice. The planting method makes the rice high in yield, good in quality, and less in pesticide residues.

A dedicated fertilizer for promoting grain-filling in rice and a preparation method therefor, belonging to the technical field of fertilizers for agricultural production. The fertilizer is prepared by using the following raw materials in parts by weight: 40-50 parts of urea, 18-30 parts of superphosphate, 12-27 parts of potassium chloride, 7-15 parts of potassium silicate, 3-5 parts of bentonite, 4-11 parts of sodium tetraborate decahydrate, 0.1-0.3 parts of N-(N-butyl)thiophosphoric triamide, 0.2-0.8 parts of matrine extract, 0.5-1.1 parts of kudzu extract and 0.5-1.0 parts of aloe extract. A product of the present invention can remarkably promote yield when applied to rice, the production cost is reduced, and the utilization rate of nitrogen fertilizer is improved.

The invention relates to a fish life-keeping transportation method, in particular to a novel fish water-free life-keeping transportation method. The method includes the following steps of live fish pretreatment, live fish dormancy through a carbon monoxide-nitrogen method, pressure combined modified atmosphere packaging, life-keeping transportation and slow warming awakening. The method has the advantage that a dormancy method that slow cooling is combined with carbon monoxide and nitrogen is adopted to enable live fish to enter the dormancy state, the dormancy effect can be achieved without reducing water temperature to the ice temperature, and a large amount of time and electricity cost are saved. No harmful reagent is adopted, the carbon monoxide and the nitrogen which are low in cost and less in dosage are adopted to promote dormancy of the live fish and have no toxic and side effects on fish bodies and human bodies, transportation and eating safety is greatly improved, and cost is reduced. Mixed gas of helium and oxygen is adopted, meanwhile certain pressure is added, oxygen absorption and utilization efficiency of the fish is effectively improved, the living time of the fish is prolonged, and the survival rate is improved.

The invention discloses a stress-tolerant growth-promoting composite mycorrhizal fungi inoculant for a pine or fir artificial forest, and a preparation and application methods thereof. The composite mycorrhizal fungi inoculant is compounded from an endomycorrhizal fungi inoculant and an exotrophic mycorrhiza fungi inoculant, wherein the endomycorrhizal fungi inoculant is obtained by culturing Glomus mosseae or Glomus intraradices in pots in a greenhouse; and the exotrophic mycorrhiza fungi inoculant is obtained by fermenting Lactarius hatsudake Tanaka and Scleroderma polyrhizum Pers. in a liquid fermentation medium. In the forestation process, the seedling root system is subjected to slurry dipping treatment or embedded in pine or fir forest soil, thereby promoting rootage and growth of pines or cedars, improving the tree vigor, enhancing the stress tolerance, increasing the absorptivity of P, and preventing the pine leaf cast, fir anthracnose, pine seedling blight and cataplexis.

The invention provides a soil organic medical fertilizer. The soil organic medical fertilizer is prepared from the following raw materials in percentage by weight: 55 percent to 70 percent of an organic fertilizer, 5 percent to 15 percent of plant extract, and the balance of auxiliary materials, wherein the plant extract is prepared from the following components in parts by weight: 0.4 to 1 part of fructus gleditsiae extract, 0.5 to 1 part of radix sophorae flavescentis extract, 1 to 1.5 parts of derris trifoliata extract, 0.5 to 1 part of hemp seed extract, 0.8 to 1.2 parts of melia azedarach extract, 1 to 1.5 parts of aloe extract, 1 to 1.5 parts of fresh orange peel extract and 1 to 1.5 parts of garlic extract. According to the soil organic medical fertilizer provided by the invention, the problems of an existing common organic fertilizer of single function, common effect, a plurality of types of uncertainty and the like in a utilization process can be radically changed; the fertilizer not only can be used for preventing treating soil virus infection and can also be used for preventing and treating plant root-knot nematode diseases, improving a soil granular structure and improving the yield and quality of crops. The invention further provides a preparation method of the soil organic medical fertilizer.

The invention relates to a solar cell device which comprises a conductive substrate, a doping active layer, an electron injection layer formed on the doping active layer and a cathode formed on the electron injection layer. The doping active layer is formed between the conductive substrate and the electron injection layer, and is formed by at least one selected from the group consisting of P3HT / PCBM, P3AT / PCBM, MDMO-PPV / PCBM, and MEH-PPV / PCBM doped with phthalocyanines dye micromolecule, and the cathode is formed on the electron injection layer. The solar device has relatively high photocurrent density and light absorption efficiency. In addition, a manufacturing method of the solar cell device is also provided.

The invention relates to a preparation method of a zinc threonine chelate, which takes threonine and dissolvable zinc salt as raw materials that react in water medium. The molar ratio of the threonine to the zinc is (7.00 to 2.00) to 1 and the zinc threonine chelate is obtained by stirring the threonine and the zinc to react at the temperature of 40 DEG C to 100 DEG C. The method adopts the threonine which is cheap in market price and belongs to the essential amino acid to human bodies and animals and the dissolvable zinc salt as the raw materials to synthesize the zinc threonine chelate, and the prepared zinc threonine chelate which meets physical condition requirements not only provides enough zinc nutrition for animals but also provides the nutrition of the essential amino acid-the threonine for animals.

The invention discloses a special synergistic compound fertilizer for wheat and a preparation method of the special synergistic compound fertilizer. The fertilizer comprises a basic compound fertilizer, a phosphorus synergist and urea formaldehyde, wherein the phosphorus synergist comprises humic acid, polyglutamic acid, carboxymethyl chitosan, chelated trace elements and sodium methylene bis-naphthalene sulfonate. Therefore, with the application of the special synergistic compound fertilizer for wheat, the fertilizer can meet the nutrient requirements of wheat for macroelements, medium elements and microelements in the whole growth period, can improve the nutrient effectiveness, especially phosphorus, can significantly reduce fixation of phosphorus by soil, improves the phosphorus activity, can promote root growth, meets the requirements of wheat for phosphorus in the overwintering period, and further improves the wheat yield.

The invention provides a method for preventing and treating the agricultural non-point source pollution of a sloping field, comprising the following step: applying chemical control agents to the agricultural crops in the sloping filed, namely applying 0.3-1.5kg of soil structure conditioner, 3-18kg of soil water-retaining agent and 1-3kg of plant anti-evaporation agent to the sloping field per mu. If the sloping field has the sloping angle of 5-10 degrees, 0.3-1kg of soil structure conditioner is applied to the sloping filed per mu, if the sloping field has the sloping angle of 10-15 degrees. 0.6-1.5kg of soil structure conditioner is applied to the sloping field per mu, and if the sloping filed has the sloping angle of more than 15 degrees, 1.0-2.0kg of soil structure conditioner is applied to the sloping field per mu. According to the method provided by the invention, a soil-crop system is taken as a whole pollution-prevention object, and the non-point source pollution is prevented and treated by adopting the technological means of chemical coordinated control, thus a better effect is achieved. Due to the adoption of the method, the purposes of reducing the application amount of the fertilizer and the pesticide, reducing the water and soil erosion of the slope and the loss of pollutants, preventing the deep leakage of the water and fertilizer, reducing the wasteful evaporation of crops, increasing the yield, conditioning and using the water and the fertilizer efficiently are achieved.

The invention discloses a seedling culture method for promoting pinus massoniana asexual nursery stock growth. The seedling culture method includes the steps of seedling culture cup selecting, matrix preparing, cup filling, disinfecting, seedling transplanting and water and fertilizer managing; peat soil, pinewood epidermises, yellow soil, pumice stone, fermented pine bark and coco coir are mixed by a ratio to obtain a matrix, an appropriate amount of controlled release fertilizer is added and stirred fully, the yellow soil and the matrix are loaded into non-woven bag seedling culture cups in the mode of putting the yellow soil in center holes and putting light matrix outside, the matrix is disinfected before seedling transplanting, then pinus massoniana asexual seedlings are transplanted into the seedling culture cups, water and fertilizer managing are carried out at regular time after transplanting until nursery stock is output for sell. The method has the advantages of being easy to operate, sufficient in resource, low in cost, high in fertilizer efficiency, good in absorption and beneficial for growth of pinus massoniana asexual nursery stock, the cultured nursery stock is high in quality, strong and high in growth speed, and the method provides technical support for pinus massoniana development and has good economic benefits, social benefits and ecological benefits.

The present invention relates to a kind of environment protecting cucumber nutrient solution capable of altering the nitrogen form with environment temperature in soil-less culture technology. The cucumber nutrient solution contains N, P, K, Ca, Mg, S and other macro elements as well as Fe, Mn, Zn, Mo, B and other trace elements, and no pesticide and plant growth regulator. It has comprehensive and reasonable nutrients and can meet the need of cucumber growth. The present invention raises the utilization of nitrogen and lowers the cost of the nutrients liquid. The nutrients liquid is convenient in use, safe and pollution-less and coincides with the safety standard for producing green food.

The invention describes a construction technology of an expression vector pX6-PHR1-35S-SIZ1 of a plant low-phosphorus response regulation and control unit PSS (PHR1-35S-SIZ1). The construction method of the expression carrier comprises: cloning and obtain SIZ1 gene from arabidopis thaliana, inserting 35S promoter into the upstream of SIZ1 gene, so as to construct a 35S-SIZ1 expression unit, inserting the expression unit into a plant expression vector pX6 to construct a vector pX6-35S-SIZ1, then inserting PHR1 gene into the vector, so as to obtain pX6-PHR1-35S-SIZ1. The expression vector pX6-PHR1-35S-SIZ1 is used to transform agrobacterium GV3101 so as to obtain an engineering agrobacterium strain NK-314 containing both PHR1 gene and SIZ1 gene.

The invention discloses a steaming and boiling system, which is particularly suitable for boiling water at a pot bottom to generate steam during a food steaming and boiling heat process. The invention provides an energy-saving steaming and boiling system capable of increasing the heat exchange area and improving the heat utilization efficiency. The energy-saving steaming and boiling system comprises a steaming and boiling pot and a combustion chamber arranged below the steaming and boiling pot, wherein a heat exchange water tank is mounted below the steaming and boiling pot, and an inner cavity of the heat exchange water tank is communicated with the inside of the steaming and boiling pot; a high-temperature heat exchange chamber is arranged in the heat exchange water tank, and a closed structure is formed between an inner cavity of the high-temperature heat exchange chamber and the inner cavity of the heat exchange water tank; the inner cavity of the high-temperature heat exchange chamber is communicated with the combustion chamber; a smoke outlet is further arranged on the high-temperature heat exchange chamber; high-temperature heat exchange tubes are mounted and configured in the high-temperature heat exchange chamber, vertically penetrate upper and lower walls of the high-temperature heat exchange chamber, and are communicated with the inner cavity of the heat exchange water tank; and a combustion engine is mounted in the combustion chamber, and the high-temperature heat exchange tubes are mounted in front of a burner of the combustion engine. The energy-saving steaming and boiling system can reduce energy consumption, decrease exhaust emission and lower production cost.

The invention discloses special vector pPZP211-PrbcS-cs which can enhance the aluminum toxicity resistance ability of plants. The vetor is plant expression vector containing tobacco citrate synthetase gene cs. The invention clones cs gene from the tobacco, a photoinduction promoter (the promoter of Rubisco small subunit) is used for controlling excessive expression of the gene cs in tobacco. Citric acid is synthesized and excreted out of cells. The citric acid enters the soil by roots and wraps the aluminium ion in soil with chemical bonds. Therefore, the damage to the plants, caused by high concentration aluminum in soil, is alleviated. The laboratory result shows that citrate synthase of the tobacco lamina with transferring cs gene is 1 to 5.5 times the activity of wild tobacco. Under the intimidation of the aluminum toxicity which is 100 to 300 micrometers, the tobacco with the transferring cs gene can excrete more organic acid, so that the roots grow better and the resistance ability against aluminum toxicity is strengthened remarkably. The special vector provided by the invention can enhance the aluminum toxicity resistance ability of the plants; the special vector has wide application potential in genetic improvement of plant varieties, more particularly for the crop varieties planted in the acid soil of southern China.

The invention relates to a photocatalyst, in particular discloses a nickel hydroxide / thin-layer carbon nitride composite visible photocatalyst and a preparation method thereof and belongs to the technical field of nano materials and photolysis water hydrogen generation. According to the photocatalyst, two-dimensional carbon nitride of a large specific surface area and two-dimensional nickel hydroxide are compounded, then the two-dimensional carbon nitride and the two-dimensional nickel hydroxide take a mutual synergistic effect into play, metallic valence of the nickel hydroxide is changed byvirtue of photocatalyst semiconductor valence band oxidability through oxidation to form an internal circulation, and a photon-generated carrier is promoted to transfer to accelerate separation of photon-generated electron hole pairs. Under a condition that no promoter platinum is available, continuous and stable water decomposition and hydrogen generation is achieved by a promoter two-dimensionalcarbon nitride semiconductor under radiation of visible light.

The invention discloses a laminated composite solar battery which comprises a polymer solar battery and a dye-sensitized solar battery formed on the polymer solar battery. Compared with the single dye-sensitized solar battery and the polymer solar battery, the composite solar battery enhances light absorption efficiency on the basis of basically maintaining the efficiencies of the two batteries, thereby enhancing photoelectric conversion efficiency.