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433results about How to "Improve photosynthetic efficiency" patented technology

Biogas slurry ecological purification method based on microalgae cultivation

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.
Owner:湖南瑞藻生物科技有限公司

Medium soil produced from active sludge building waste residue and production method of medium soil

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.
Owner:清远绿由环保科技有限公司 +1

Foliage spraying preparation for promoting fruit setting and fruit swelling and enhancing crop stress resistance

ActiveCN102701864AImprove flowIncrease endogenous hormone levelsFertilizer mixturesAdditive ingredientGibberellin
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.
Owner:JINAN FUTIANXIA SEED

Rice dry-farming direct-seeding planting method

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.
Owner:于飞

Method for preparing biological oil by co-liquefaction of algae and lignocellulosic biomass

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.
Owner:JIANGSU UNIV

Production method for wide-early-superior raw cotton in cotton region in Northwest China

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.
Owner:INST OF COTTON RES CHINESE ACAD OF AGRI SCI

Gene for improving chlorophyll synthesis and photosynthesis efficiency of tomatoes and application

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.
Owner:SHENYANG AGRI UNIV

Biological composite fertilizer

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.
Owner:YANTAI NAKE ENVIRONMENTAL PROTECTION TECH

Growth regulator capable of regulating growth and other functions of microalgae, and verification method and application thereof

InactiveCN104946535AImprove physiological traitsIncrease growth rateUnicellular algaeMicrobiological testing/measurementSignaling proteinsHormone metabolism
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.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI

Water-saving high-yield cultivation technology for precisely attaching seeds to rice membrane

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.
Owner:HEILONGJIANG JIAHE AGRI SCI & TECH DEV

Photobioreactor capable of realizing high-efficiency carbon dioxide immobilization

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.
Owner:JINAN UNIVERSITY
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