435results about How to "Improve photosynthetic efficiency" patented technology

The invention relates to a bio-organic compound fertilizer, which comprises the following components in part by weight: 10 to 30 parts of organic matter, 2 to 10 parts of compound microbial inoculants, 5 to 20 parts of humic acid, 5 to 20 parts of amino acid, 4 to 10 parts of chitin, 1 to 5 parts of polypeptide, 530 parts of nitrogen, phosphorus and potassium, 5 to 10 parts of secondary and trace elements, 5 to 15 parts of algae fertilizer, 5 to 10 parts of zeolite powder and 1 to 5 parts of synergistic agent. Through the scientific and rational formula, the bio-organic compound fertilizer achieves nutritive equilibrium and can satisfy the need of crop growth in nutrient. The microbial inoculants are added to quickly degrade natural macromolecular organic compounds into the organic fertilizer and decompose organic pollutants, which effectively improves the capacity of crops in the absorption of nutrient components, reduces the waste of the fertilizer and reduces the damage of the chemical fertilizer to soil to further achieve the nutritive equilibrium, satisfy the need of the crop growth in the nutrient, achieve the aims of low investment and high output value, improve the quality of the crops and improve the economic benefit brought by the crops.

The invention discloses a biogas slurry ecological purification method based on microalgae cultivation. The method comprises the following steps: (1) biogas slurry pretreatment; (2) habituated culture of autotrophic microalgae, namely, obtaining algae strains capable of rapidly growing in 70%-100% biogas slurry; (3) preparation of a seed solution; (4) a biogas slurry purification method during growing of microalgae, namely, after expanded cultivation, inoculating the habituated algae species into an open photobioreactor for cultivation, obtaining chlorella biomass growing by high density through a semi-continuous culture method and optimized methods such as fed-batch cultivation, and purifying the biogas slurry; (5) biochemical breaking of microalgae cell walls, namely, introducing the microalgae cells into a biochemical wall breaking pool, putting freshwater fish into the pool, and obtaining algae slurry subjected to wall breaking; and (6) collection of the microalgae cells and recycling of the biogas slurry. According to the method, not only is a method provided for purifying the biogas slurry, but also the obtained algae cells and the biogas slurry can be recycled, so that ecologicalization treatment of the biogas slurry is realized, the environment is improved, and furthermore, the economic and social benefits are produced.

The invention provides an amino acid foliar fertilizer, comprising the following materials in percentage by mass: 30 to 50 percent of plant amino acid, 1 to 5 percent of compound sodium nitrophenolate, 15 to 25 percent of urea, 5 to 10 percent of ferrous sulphate, 5 to 10 percent of borax, 3 to 5 percent of cupric sulfate, 0.1 to 1 percent of ammonium molybdate, 1 to 2 percent of manganese sulfate, 4 to 8 percent of zinc sulfate, 10 to 20 percent of organic silicon, and the balance water. The amino acid foliar fertilizer has obvious effects of exciting activity of enzyme in crops, improving the photosynthetic efficiency of the crops, accelerating nutrition absorption and operation inside the crops, increasing the content of chlorophyll, improving stem substance accumulation and sugar content, improving crop quality, and enhancing crop drought resistance, disease resistance and immunity and the like, can be absorbed by leaves, stems and roots of various commercial crops, such as Chinese cabbages and other vegetables, so as to lead the crops to be higher, and has remarkable effect in enhancing the performances of root growth, sprouting, seedling strengthening, flower promoting, fruit swelling, fruit protecting and other aspects for the crops.

The invention relates to a method for producing organic fertilizer, comprising the following steps: mixing 15-20% of smashed tobacco stalk, tobacco ashes and other bits and pieces with 45-50% of feces of live stock feces; then evenly mixing 0.08-0.1% of thermophilic bacillus in aerobic zymogen, 0.5-0.8% of trace element fertilizer and 0.1-0.2% of carbamide with 30-35% of smashed plant straw powder; adding water to the obtained mixture to raise the water content to 45-50% as well as adjusting pH value to 5.5-6.5; fermenting for 10-15 days at a temperature higher than 20 DEG C; turning 5-6 times, and drying in the air until the water content is lower than 20%. The organic fertilizer produced by the invention can loosen and activate soil, enhance photosynthetic efficiency pf plants, increase yield and quality of farm produce, decrease occurrence of plant diseases and insect pests, reduce usage amount of pesticide and fertilizer, and relieve environment pollution.

The invention relates the construct method for transgenosis rhinestone algae bioreactor. The method comprises the following steps: using the rhinestone algae as transgenosis receptor biology, highly effective expressing the carrier construct by constructing the exogenesis gene containing screening mark expression frame, leading the destination genes in rhinestone algae with bead milling method, electric punching method and other methods, integrating them into nucleus genome or chloroplast genome, and adopting a series of gene expression regulate and control technology to construct the transgenosis rhinestone algae bioreactor. The transgenosis rhinestone algae bioreactor possesses the characters of fast growth rate, short breeding cycle, easy segregation, photoautotroph and large scale culture, fast and cheap producing medicinal protein, industrial raw materials, and feeding vaccination, and possessing the bioactivity secondary metabolite.

The invention belongs to the technical field of bactericides, and particularly relates to a quinoline carboxylic acid ester compound shown in the formula (I), and the compound in the formula (I) showsvery good activity for various bacteria in the agricultural field. In addition, due to the fact that the compounds have very high bioactivity, the good effect can be achieved at very low dosage, andthe compound can be used for preparing the bactericides in the agricultural field.

The invention relates to medium soil produced prepared from active sludge building waste residue and a production method of the medium soil. The production method of the medium soil is characterized by comprising the following steps of: uniformly mixing active sludge, quick lime, ferrous sulfate and magnesium sulfate, carrying out deodorization, sterilization and chelation, drying and crushing; then, carrying out dynamic type high-temperature aerobic fermentation on the crushed mixture, forestry three-residue waste residue, peanut shells and an organic material decomposition agent; drying, grinding and screening the fermented mixed clinker to prepare mixed powder; uniformly mixing the mixed powder with raw materials including building waste residue soil, calcium hydrophosphate, ammonium nitrate, potassium sulphate, amino acid, a root growth promoting agent, potassium polyacrylate and soil improvement agent by utilizing a stirrer and drying, then, packaging into an active sludge building waste residue medium soil product by adopting a full-automatic electronic metering machine. The product has the advantages and effects of containing nitrogen, phosphor, potassium and various trace elements as well as various nutrients of organic acid for meeting the growth needs of plants, having no pollution, low cost and good benefits, and protecting the environment, and saving the land.

The invention discloses a foliage spraying preparation for promoting fruit setting and fruit swelling and enhancing crop stress resistance. The preparation comprises the ingredients including fulvic acid, DA-6, 2,4-D sodium salt, alpha-pimacol, gibberellin, zeatin, dimethyl sulfoxide, butylcellosolve, sodium tetraborate, zinc sulfate, ferrous sulfate, molybdenum sulfate and magnesium sulfate. After the preparation is sprayed, nutrient substances are rapidly transferred from blade surfaces and are gathered at the plant reproduction active part, and the center endogenous hormones level of fruits is improved; the cell division is promoted, the cell size is amplified, the fruit swelling is accelerated, the chloroplast development and the chlorophyll formation are promoted, the photosynthetic efficiency of leaves is improved, and the unit area yield is increased; the flowing of nutrient substances to female flowers is enhanced, the fruit development speed is accelerated, the uniform fruit development is controlled, the deformity is reduced, the fruit surface is kept fresh, bright and smooth, and the commodity rate is obviously improved; and the immunological competence of plants are excited, the resistance is improved, the occurrence of the pest and disease damage is reduced, the senescence is delayed, and the picking period and the fruit shelf period are prolonged.

The invention provides a rice dry-farming direct-seeding planting method, which is characterized by comprising the following: a, a step of preparing land, which is to level and harrow land before sowing, replenish pre-sowing water and keep soil moisture between 75 and 85 percent; b, a step of sowing, which is to uniformly sow rice seeds on the land finished in a step a, wherein the amount of seeds per each Mu of land is 2.5 to 5.4 kg; c, a step of earthing up, which is to earth up at a height of 1.5 to 3 centimeters after sowing is finished; d, a step of compacting, which is to compact after earthing up; and e, a step of spraying film, which is to add 0.03 to 0.06 kilogram of 2-methyl-4-chlorophenoxy acetic acid serving as herbicide to 60 to 80 liters of water, mix and stir the materials and uniformly spraying the obtained product on the compacted land so as to finish the dry farming and direct seeding of rice. The rice dry-farming direct-seeding planting method can leave out two work links of cultivating seedlings and transplanting. After multifunctional degradable liquid mulching film is sprayed on ground, effective accumulated temperature can be increased; rice water shortage is alleviated; the physical and chemical properties of soil are improved; microbial activity is improved; the decomposition and release of soil organic substances are accelerated; the transfer of effective nutrient to plants is accelerated; and the photosynthetic efficiency and nutrient conveying rate of rice are improved. The method has the advantages of ensuring exuberant tillering tendency, low positions of tillering knobs and numerous big ears, saving water by 50 to 70 percent and increasing yield by about 10 percent.

The invention belongs to the technical field of biomass energy and preparation thereof, and discloses a method for preparing biological oil by co-liquefaction of algae and lignocellulosic biomass.The method comprises the following steps: taking the algae and the lignocellulosic biomass as raw materials and taking an alcohol-water cosolvent as a reaction medium; carrying out co-liquefaction in a high-temperature and high-pressure hydrothermal reaction kettle; cooling an obtained liquefied product, extracting the obtained liquefied product by using an organic solvent; and then carrying out solid-separation separating and separating an organic solvent phase from an alcohol-water phase to finally obtain a gaseous product as a by-product, solid residues and a water-phase product.Synergistic effect of the algae and the lignocellulosic biomass is utilized comprehensively, the alcohol-water cosolvent is taken as the reaction medium, energy consumption and investment cost in a reaction system process are reduced, quality and yield of prepared liquid, namely the biological oil, are improved further, recycling of the algae and the lignocellulosic biomass is realized, meanwhile, energy crisis caused by exhaustion of fossil energy can be relieved, and the application prospect is wide.

The invention belongs to the technical field of bactericides, and particularly relates to a quinoline carboxylic acid ester compound shown in the formula (I). The compound in the formula (I) has highactivity to various bacteria in the agricultural field. The compound has high biological activity, a very good effect can be achieved at low dosage, and the compound can be used for preparing a bactericide in the agricultural field.

The invention discloses a production method for wide-early-superior raw cotton in a cotton region in Northwest China. The method includes the following steps of 1, fission type elite seed production,wherein variety selection,10-ten-thousand-times fission type seed reproduction, and grain selection according to the grain size are conducted; 2, planting in rows with the equal width and conducting the following matching technologies: the variety selection and rational early sowing technology, the edge film widening and lighting technology, the sowing row no-covering-soil and film no-covering-soil technology, the appropriate seedling water dropping technology, the first water late-drop technology, the plant-height increasing and appropriate tip pruning delay technology, and the cotton-flowering and boll-forming fertilizer re-application technology; 3, an early-sowing and early-ripening matching technology; 4, superior raw cotton quality control technologies which includes the technology of uncovering mulching films in the optimum period and preventing pollution, the technology of spraying an appropriate amount of disleave agent and ripener in the appropriate period, the technology ofremoving field weeds and foreign matters and the technology of harvesting in the appropriate period. The method is feasible, operation is simple and convenient, conversion from short-dense-early 'getting cotton by temperature' to tapping of the potential of light, temperature and environment resources is achieved, and support is provided for high-yield, high-efficiency and high-quality cotton.

The invention relates to the field of bio-fertilizers, and particularly discloses a preparation method of a nutrition package fertilizer. The preparation method of the nutrition package fertilizer is characterized in that the preparation method comprises the steps that furfural residues, animal wastes, plant ash and methane residues serve as raw materials; the raw materials are mixed; compound microorganism bacteria, medium elements and trace elements are added and stirred uniformly; a pH value of a mixture is adjusted to be 6-7; the mixture is fermented, and subjected to turning and secondary fermentation; compound microorganism bacteria are added; then bagging fermentation is conducted to form a semifinished nutrition package fertilizer; calcium ammonium nitrate is added to the semifinished nutrition package fertilizer, and mixed uniformly; and the finished nutrition package fertilizer is obtained. The method is simple in production step and low in production cost; the nutrition package fertilizer is applied as required; a granular structure of soil is improved; sterilization, convenience, decay control and insect prevention are facilitated; and a photosynthetic effect is improved.

The invention belongs to the field of novel multi-functional fertilizer, in particular to multi-functional composition for increasing the production of tuber crops. The active ingredient of the composition is composed of choline chloride, amino-oligosaccharin, diethylaminoethyl hexanoate, naphthylacetic acid, humic acid, potassium sulfate, monopotassium phosphate and magnesium sulfate heptahydrate. The multi-functional composition for increasing the production of tuber crops is novel multi-functional fertilizer, is featured with no residue, no pollution and no resistance in the agriculture and is capable of obviously accelerating the tuber crop root growth and improving the tuberous root and tuber production.

The present invention relates to agricultural technology, and is seaweed amino acid RE compound foliage fertilizer and its preparation process. The preparation process includes the following steps: 1. crushing seaweed into superfine seaweed powder; 2. adding seaweed powder and compound amino acid powder into 1-6N phosphoric acid or acetic acid solution and maintaining at 60-120 deg.c for 2-40 hr to acidolyze to obtain mixture solution of seaweed oligose, polypeptide and amino acid; 3. regulating the pH of the mixture solution to 5-7 with ammonia water, sodium hydroxide or lime water, and adding metal salt mother liquid and RE mother liquid; and 4. adding water and regulating pH to 5-7 with ammonia water, sodium hydroxide or lime water to obtain the compound foliage fertilizer. The compound foliage fertilizer can raise the photosynthesis efficiency of plant and promote plant growth.

The present invention is biophotosynthetic reactor apparatus and process for producing micro algae. Inside one transparent photosynthetic greenhouse, there are at least one closed transparent circulating pipeline unit with at least one layer of sealed circulating pipes made of high energy converging light-converting RE material, and light-converting plates or films of high energy converging light-converting RE material. Inside the sealed circulating pipes, chlorella is cultured. The present invention has full utilization of natural illumination, capacity of avoiding hetero microbe contamination, effective control of temperature and CO2 addition and high chlorella yield and quality.

The invention relates to a gene for improving chlorophyll synthesis and photosynthesis efficiency of tomatoes and application. The gene for improving the chlorophyll synthesis and photosynthesis efficiency of the tomatoes is composed of a tomato S1HY5 gene and protein encoded by the gene. The invention provides the application of the tomato S1HY5 gene or the protein encoded by the tomato SlHY5 gene to the improvement of chlorophyll synthesis of tomato plants and promotion of the photosynthesis of tomato plant leaves and a method for obtaining the transgenic tomato plants with the increased plant chlorophyll and photosynthesis rate. According to the specific method, through a gene overexpression technology, the expression level of the tomato S1HY5 gene is increased, and therefore the chlorophyll of the tomato plants is increased; the functions of increasing the chlorophyll content of the tomatoes and improving the photosynthesis efficiency of the tomatoes are determined, a gene resourceis provided for cultivating the new tomato varieties with the high chlorophyll content, the gene has high application value, and a theoretical basis is laid for a regulation mechanism of optical signals for the chlorophyll synthesis and photosynthesis of the plants.

The invention discloses a raceway pond photobiological reactor for implementing microalgae large-scale culture, which comprises a main raceway pond, an algae liquid spray unit, a stirring system and an algae liquid circulation system, wherein the stirring system comprises a motor and a stirring paddle, and the stirring paddle is arranged in the main raceway pond, so that the algae liquid can flowin the main raceway pond; the algae liquid spray unit is fixed in the main raceway pond through a metal supporting frame, and comprises a sprayer and a transparent curtain wall, the spray is used fordispersing the downflow algae liquid, and the transparent curtain wall is used for preventing the algae liquid from splashing and preventing the algae liquid from contacting the external environment;and the algae liquid circulation system is communicated with the main raceway pond and the algae liquid spray unit, and drives the algae liquid to circulate between the main raceway pond and the algae liquid spray unit. The design scheme of the novel raceway pond photobiological reactor provided by the invention can be used for implementing low-cost high-density culture of microalgae.

An integrated airlift-type photobiological reactor for culturing photosynthetic cells and rearching the relative metabolic products is composed of main body, cylindrical left tube coaxial with main body, and air distributor centrally extended from top to bottom. Its advantages are large light irradiated area, good liquid mix, high gas-liquid mass-transfer intensity, simple structure, high output and low cost.

The invention relates to a biological composite fertilizer, and concretely relates to a biological composite fertilizer. The biological composite fertilizer is characterized by being composed of the following raw materials: 7-9 parts of a microbial composite inoculant, 3-5 parts of nitrogen-fixing bacteria, 3-5 parts of phosphobacteria, 3-5 parts of potassium bacteria, 5-15 parts of humic acid, 10-20 parts of amino acids, 4-6 parts of chitin, 1-3 parts of polypeptide, 5-15 parts of medium and trace elements, 5-15 parts of an algae fertilizer, 8-10 parts of zeolite powder, and 1-3 parts of a synergist. The fertilizer is capable of obviously improving soil fertility and microbial environment in soil, and has effects of resisting insect diseases. The fertilizer is low in cost, simple in production technology, long in fertilizer efficiency and free of pollution. Nutrition balance is reached through scientific reasonable formula, nutrients demanded by crop growth are satisfied, large-molecular natural organic compounds are accelerated to be decomposed into an organic fertilizer by adding the inoculants, organic pollutants are decomposed, the capability of crop absorbing nutrients is effectively improved, fertilizer waste is reduced, damage of chemical fertilizers to soil is reduced, and thus nutrition balance is realized, nutrients demanded by crops are satisfied, and economic benefit of crops is improved.

The invention discloses a water-soluble fertilizer and particularly discloses a carbon-containing water-soluble fertilizer. The fertilizer is prepared from the following ingredients in parts by weight: 60-85 parts of water-soluble carbon fertilizer, 10-25 parts of water-soluble phosphate fertilizer, 0-20 parts of water-soluble potash fertilizer and 1-3 parts of water-soluble trace element fertilizer, wherein the water-soluble trace element fertilizer contains organic complex trace elements, of which the content is not lower than 20%. The carbon-containing water-soluble fertilizer prepared by a method disclosed by the invention can be used for supplementing nutrients to crops, enhancing a fertilizer effect and promoting growth, and can be used for supplying carbon dioxide, so that the photosynthesis efficiency of the crops is increased, the yield is increased, and the quality is improved; particularly, the proportioning ratio of nutrients can be flexibly adjusted conveniently according to the actual needs of land and the growth of the crops, so that the use is greatly facilitated.

The invention relates to a probiotic wettable powder fertilizer, and belongs to the technical field of fertilizers. The fertilizer is mainly formed by mixing jet bacillus live bacteria powder, bacillus subtilis live bacteria powder, bacillus megatherium live bacteria powder, diethyl aminoethyl hexanoate, white carbon black and sodium lignin sulfonate. The probiotic wettable powder fertilizer comprises the following components in parts by weight: 2-7 parts of jet bacillus live bacteria powder, 2-7 parts of bacillus subtilis live bacteria powder, 2-9 parts of bacillus megatherium live bacteria powder, 80-120 parts of diethyl aminoethyl hexanoate, 80-120 parts of white carbon black and 10-60 parts of sodium lignin sulfonate. The content of live bacteria in jet bacillus live bacteria powder is 10-20 billion / g, that in bacillus subtilis live bacteria powder is 10-30 billion / g, and that in bacillus megatherium live bacteria powder is 8-20 billion / g. The probiotic wettable powder fertilizer provided by the invention can be quickly dispersed in water, and is sprayed and poured on the blade surface and irrigated at the root in the seedling stage of crops, so that the fertilizer efficiency is directly effected on the crops, and the fertilizer is high in absorption rate and green and efficient.

The invention relates to the technical field of biological metabolism engineering, particularly a metabolism and signal pathway of a microalga growth regulator, and a verification method and application thereof. A metabolomic means is utilized to verify microalga hormones, and a functional genomic means is utilized to explain the metabolism channel, signal transmission pathway and regulation network of the microalga hormones; a transcriptomic means is utilized to verify key enzymes and proteins related to hormone metabolism and signal transmission in the microalga stress tolerance and oil synthesis process; and metabolism engineering and chemical engineering means are utilized to regulate the hormone metabolism and signal pathway, thereby optimizing the physiological characters of the algae and plants. The invention provides a method for verifying microalga hormones and metabolism pathway / signal pathway thereof. The method can explain the hormone metabolism enzymes and signal proteins closely related to physiology of algae as well as related regulation mechanism, and is used for improving the agronomic characters of organisms.

The invention discloses a peanut planting method and relates to the technical field of crop cultivation. The method includes the following steps of seed sowing, soil preparation, field planting and management in the growth period and the full-blossom period. Compared with the prior art, due to the fact that disease and insect pest preventing agent of Chinese herbal medicine is applied, no pollution is generated, environmental pollution is reduced, and the disease and insect pest preventing effect is achieved; meanwhile, because the seed sowing method is changed, the photosynthetic efficiency of canopies is improved, and the yield of peanuts is increased.

The invention discloses a water-saving high-yield cultivation technology for precisely attaching seeds to a rice membrane. The technology includes the following steps that first, a field is levelled and fine raked; second, a high-yield late-maturing lodging-resistant variety is selected; third, the seeds are precisely attached to the membrane through a machine; fourth, the membrane is made to cover the field for cultivation; fifth, formulated fertilization is performed; sixth, water management is performed. The technology has the following yield increasing advantages that first, the seeds are precisely attached under the rice membrane, and seedling growing, transplanting and restoring are not needed; second, the seeds are covered with the mulch, the moisture in the field is low, and pathogenic bacteria cannot be bred and spread easily; third, growth of weeds can be effectively restrained due to the membrane covering, and the technology is favorable for developing green rice production; fourth, the temperature under the membrane is high, and conversion and absorption of organic matter are promoted; fifth, the seeds are attached under the membrane, rice grows fast, and the root systems are strong; sixth, physiological water needs of rice are optimized, and water saving and yield increasing are achieved. Due to the technology, seedlings can be short, strong and good in cold tolerance and bear large ears and more grains, the cost saving and yield increasing effects are remarkable, rice cultivation is made the same as corn and soybean cultivation, labor is saved, and the production is more convenient and efficient to carry out.

The invention relates to microalgae expression vectors and a method for producing astaxanthin by using beta-carotene ketolase (BKT) and beta-carotene hydroxylase (CHYB) in transgenic microalgae. Particularly, the invention relates to the construction of the microalgae expression vectors, the microalgae expression vectors containing the BKT and CHYB, microalgae containing the microalgae expression vectors, the method for producing the astaxanthin by using the BKT and CHYB in the microalgae, a method for preparing the transgenic microalgae for producing the astaxanthin by using the microalgae expression vectors, application of the microalgae expression vectors to the preparation of the transgenic microalgae, and application of the microalgae expression vectors to the production of the astaxanthin.

The invention discloses a treating process for green wastes. The process comprises the following steps of: (1) classifying and collecting green wastes, distinguishing herbaceous raw materials, broad-leaf raw materials and needle woody raw materials, selecting herbaceous plant wastes and broad-leaf woody plant wastes without volatilization smell, and performing rough smashing and secondary fine smashing; (2) smashing the green waste powder obtained in the step (1), cottonseed cake powder, corn flour, bran, grass carbon and rich soil in the weight ratio of (60-80):(5-8):(6-10):(12-20):(4-8):(20-40), mixing uniformly, adding water in an amount which is 25-30 percent based on the total weight, and adjusting the pH value to 7.5-8.5; and (3) sterilizing the mixture treated in the step (2), adding streptomyces microflavus, and fermenting at the temperature of 26-32 DEG C for fermenting for 5-8 days. In the invention, agricultural and forestal wastes are taken as main raw materials, so that wastes are recycled, and the cost is greatly lowered; and when a fermentation product is used for producing a seed treating agent, the added value of the product is increased, and high economic benefit is achieved.

The invention discloses nude hybrid rice and a breeding method thereof, and belongs to the technical field of the utilization of rice heterosis. The nude hybrid rice can be obtained through mutagenesis according to the characteristics that the nude character of rice is controlled by a pair of recessive genes. A maintainer line (B line), a two-line sterile line (S line) and a restorer line (R line) of hybrid rice which has excellent performance on the production is subjected to direct irradiation mutagenesis to obtain nude gene mutants corresponding to the maintainer line, the two-line sterile line and the restorer line of the hybrid rice. A nude maintainer line 'nude B' is hybridized and backcrossed with a corresponding A line to obtain a nude sterile line 'nude A' with the nude character. The 'nude A' can be assembled with 'nude R' to obtain nude three-line hybrid rice; and 'nude S' can be assembled with the 'nude R' to obtain nude two-line hybrid rice. The nude hybrid rice is high in photosynthetic efficiency, and is easy to manually harvest, mechanically harvest and thresh; and the characteristics of increasing the storage capacity of the rice, reducing working dust and the like ensure that the nude hybrid rice has relatively strong market competitiveness.

The invention discloses a photobioreactor capable of realizing high-efficiency carbon dioxide immobilization. The photobioreactor comprises a flat photobioreactor, a metal supporting rack, an algae liquid spraying unit, an algae liquid circulating system and an industrial waste gas pretreatment unit, wherein the flat photobioreactor is connected to the industrial waste gas pretreatment unit; the metal supporting rack is installed on the upper surface of the flat photobioreactor, and is used for supporting and fixing the algae liquid spraying unit; the algae liquid circulating system comprisesan external circulating pipe and a power system, the external circulating pipe is used for communicating the flat photobioreactor and the algae liquid spraying unit and the power system is used for driving the algae liquid circulating; and the algae liquid spraying unit comprises a sprayer and a transparent curtain, the sprayer is used for dispersing algae liquid flowing down and the transparent curtain is used for preventing the algae liquid from splashing and preventing the algae liquid from contacting the external environment. Based on the design scheme of the novel spraying type photobioreactor provided by the invention, high-density cultivation of microalgae and high-efficiency absorption of carbon dioxide in industrial waste gas can be realized.