2392 results about "Normal growth" patented technology

The invention relates to a restoration agent for saline-alkali land soil, which consists of free gypsum dehydration, nature organic substance, microbial fertilizer and inorganic nutrient with weight ratio of 60-70:25-35:1-4:3-6; the content of dihydrate calcium sulfate in the free gypsum dehydration is over 80 percent; the nature organic substance consists of weathered coal and grass carbon with weight ratio of 1.0:0.93; the content of effective bacteria in the microbial fertilizer is 2.0 hundred millions / g; and the inorganic nutrient consists of urea, ordinary superphosphate and potassium chloride with weight ratio of 1.0:2.42:075. The restoration agent can utilize calcium ions in the free gypsum dehydration for replacing sodium ions in the soil so as to lower the alkalinity in the soil and provide calcium and sulfur elements for crops, while the nature organic substance can lower and regulate the slat content and the alkalinity in the soil. In addition, the nature organic substance, the microbial fertilizer and the inorganic nutrient can supply large amount of nutrient elements such as nitrogen, phosphorus, potassium and the like to the crop for normal growth, thereby being capable of improving the yield of the crop.

The invention belongs to the technical field of ecological engineering and particularly relates to a method of vegetation restoration and reconstruction of a bare rock slope in East China. the engineering materials such as active plant material and synthetic geonet are utilized, a plant-growing substrate (plant tool species seed, nutritional soil and binder) is uniformly mixed according to a certain proportion and injected on the rock slope according to the design thickness by a special injection device for the plant-growing substrate, an ecological environment which can ensure normal growth of the plant is created on the rock slope, the slope reinforcement and vegetation restoration are realized through the growth of the plant and other auxiliary functions, and the purpose of vegetation reconstruction of the bare rock slope is achieved. The method is applicable to the vegetation restoration and reconstruction of the bare rock slope in East China with respects to plant tool species and medium formulation and obtains obvious ecological benefits after several years of implementation and popularization.

The present invention relates to the production of a non-transgenic plant resistant or tolerant to a herbicide of the phosphonomethylglycine family, e.g., glyphosate. The present invention also relates to the use of a recombinagenic oligonucleobase to make a desired mutation in the chromosomal or episomal sequences of a plant in the gene encoding for 5-enol pyruvylshikimate-3-phosphate synthase (EPSPS). The mutated protein, which substantially maintains the catalytic activity of the wild-type protein, allows for increased resistance or tolerance of the plant to a herbicide of the phosphonomethylglycine family, and allows for the substantially normal growth or development of the plant, its organs, tissues or cells as compared to the wild-type plant irrespective of the presence or absence of the herbicide.

The invention relates to a preparation method of a biological preservative. As known to all, along with the rapid development of the society, chemical preservatives have been used in food, have strong impact on food safety and endanger the health of consumers, therefore, the use of preservatives causes great concern of government departments and consumers. According to the biological preservative, natural plants and microbial antibiotic substances are used as base materials, for example, the biological preservative is prepared by mixture of carboxymethyl chitosan, xylooligosaccharide, nisin from lactic streptococci, acetic acid, lactobacillus reuteri, pediococcus acidilactici, calcium citrate, ionized calcium, lactic acid, plant essential oil and water. The biological preservative can inhibit growth of harmful microorganisms by antagonistic and competitive inhibition effects among different microorganisms and produce extracted and separated components of antibacterial active ingredients having antifungal and antibacterial functions in normal growth and metabolism processes, thereby achieving antiseptic and fresh-keeping effects.

The invention belongs to the technical field of digital image processing and pattern recognition and particularly relates to a plant disease and pest detection method based on SVM (support vector machine) learning. The plant disease and pest detection method comprises the following steps: acquiring a large number of regularly grown plant leaves and the plant leaves with diseases and pests from a large number of monitoring videos of agricultural scenes; extracting a part of pictures of the regularly grown plant leaves and the plant leaves with diseases and pests as samples; extracting characteristics [including color characteristic, HSV (herpes simplex virus) characteristic, edge characteristic and HOG (histogram of oriented gradient) characteristic] of each leaf picture; combining the characteristics into characteristic vectors; training the characteristic vectors of each leaf picture through an SVM learning method; forming a classifier after training; and detecting the large number of plant leaf pictures by the classifier to detect whether diseases or pests occur to the plant leaves. Compared with a biologic plant disease and pest detection method, the plant disease and pest detection method based on the SVM learning is higher in real time and easier to implement; and the shortcoming of detecting the plant diseases and pests by working in the fields is overcome.

The present invention relates to the production of a non-transgenic plant resistant or tolerant to a herbicide of the phosphonomethylglycine family, e.g., glyphosate. The present invention also relates to the use of a recombinagenic oligonucleobase to make a desired mutation in the chromosomal or episomal sequences of a plant in the gene encoding for 5-enol pyruvylshikimate-3-phosphate synthase (EPSPS). The mutated protein, which substantially maintains the catalytic activity of the wild-type protein, allows for increased resistance or tolerance of the plant to a herbicide of the phosphonomethylglycine family, and allows for the substantially normal growth or development of the plant, its organs, tissues or cells as compared to the wild-type plant irrespective of the presence or absence of the herbicide. The present invention also relates to a non-transgenic plant cell in which the EPSPS gene has been mutated, a non-transgenic plant regenerated therefrom, as well as a plant resulting from a cross using a regenerated non-transgenic plant having a mutated EPSPS gene. The amino acids at the positions 126, 177, 207, 438, 479, 480 and / or 505 are changed tp produce a mutant EPSPS gene product.

The invention relates to an animal origin-free low-protein culture medium suitable for animal cell product production, comprising 24 basic metabolism nutrients, 11 vitamins, 3 transferrin substitute compounds, 5 lipid compounds, 2 nucleic acid compounds, 4 hormones and growth factors, 3 antioxidants, 1 shear-resistant protective agent, 1 pH indicator, 2 pH buffers, 9 other inorganic salts, soy hydrolysates adopted to substitute animal origin component, and composition of ferrous sulfate, ferric nitrate and EDTA-2Na adopted to substitute transferrin. The culture medium can be made by dissolving the aforementioned components in triply distilled water. The positive effects of the culture medium are as follows: the culture medium contains no animal origin component, the total protein content is lower than 10mg / L, which helps separate and purify products and is suitable for production of recombinant protein medicaments; the culture medium supports normal growth and long-term subculturing of animal cells; the culture medium can be used without adaptation, is easily prepared and is suitable for massive production of animal cell products.

The invention discloses a wind prevention and sand fixation greening planting technology with good sand control effect. The wind prevention and sand fixation greening planting technology mainly comprises the following steps of: firstly arranging a plurality of strip sand-protecting barriers in a traveling dune zone; then mix-seeding herbaceous plant seeds in open grounds among the strip sand-protecting barriers, and planting shrub seedlings at the positions where the strip sand-protecting barriers are located; and finally fertilizing among the strip sand-protecting barriers and inside the strip sand-protecting barriers. According to the wind prevention and sand fixation greening planting technology, normal germination growth of most herbaceous plant seeds and shrub seedlings can be ensured without planting by multiple times; moreover, the growth period of herbaceous plants is relatively short, so that grass capable of sand fixation can be formed in a short time to further ensure normal growth of shrub seedlings; a grass and shrub forest can be formed in a relatively short time, two to three years in general, through the combination of the sand fixation of sand-protecting barriers with grass and shrub plants so as to achieve the effects of wind prevention and sand fixation; and the desertification of land can be effectively prevented. The technology is suitable for popularization and application in the technical field of sand control.

The invention discloses a chitosan oligosaccharide composite with cold-resistant function, which is aqueous solution, wherein the mass concentration of the chitosan oligosaccharide is 5%-10%, other auxiliary active constituents include at least one of phosphorus, potassium, calcium, boron, molybdenum, zinc, salicylic acid and betaine, and the content of the auxiliary active constituents is 0.5%-30% of the total mass concentration of the composite. Before the flowering period and the young fruit period of fruit trees, the time of young seedling of melon and fruit, vegetables and flowers, and the cold sensitive period of the winter growth of greenhouse crops, the composite is diluted by 1000 times with water to be sprayed on the leaves of the plants for 2-3 times; the chitosan oligosaccharide composite used in the invention has the function of promoting photosynthesis of the crops, improving activation performance of various enzymes and promoting metabolism of carbohydrates; and the chitosan oligosaccharide composite is used for inducing the crops to improve stress resistance and inducing the crops to improve cold resistance, so that the crops can get through the low-temperature cold harmful period, and regular development and yield of the crops are ensured.

The invention belongs to cultivation equipment in the agricultural engineering field, which comprises an ultrasonic atomizer, an atomization chamber, a water storage tank, an axial-flow fan, a solenoid valve, a water level detection sensor, a control box, a fog conveying and nutrient solution return pipe, a cultivation box, a cultivation plate and a bracket. The cultivation device can perform aeroponic cultivation and water cultivation simultaneously, and is characterized in that fog drops enter the cultivation box under the wind action, the unabsorbed nutrient solution is deposited in the cultivation box and kept at a stable height, and the cultivation device can also ensure the height of the nutrient solution in the atomization chamber to be kept at a proper position, so that the ultrasonic atomizer can work at the maximal efficiency. The cultivation device has the advantages of sufficient oxygen gas for the crop root system in aeroponic cultivation and rapid production, can ensure the normal growth of crops in case of power-off or device failure, and can provide crops with sufficient water and nutrient through water cultivation when fog drops are hard to reach the interior of a dense root system or fog drops can not provide sufficient nutrients required for the plant growth.

The invention discloses a group of bZIP genes which are derived from rice and are related with stress tolerance, the encoded protein has one of the following amino acid sequences: 1) the SEQ ID No:1, 3 or 5 in a sequence table; 2) the amino acid residue sequence of the SEQ ID No:1, 3 or 5 in the sequence table is treated with the substitution, deletion or adding of one to ten amino acid residues and the derived protein has the effect of regulating the performance of plant stress tolerance. The experiments proves that the transgenic rice of the invention can improve the tolerance of the rice to high-salt, drought and low-temperature adversity threats and have no apparent impacts on the normal growth and the economic traits of the rice. The protein and the encoded genes of the invention have important theoretical and practical significances on the research of a plant stress tolerance mechanism, the improvement of the plant stress tolerance and the improvement of the related traits, thereby playing an important role in the stress tolerance genetic engineering improvement of plants (more particularly cereal crops) and having broad application prospect.

The invention relates to a salt tolerant corrosion and scale inhibitor for underground oil-gas wells and a preparation method thereof. The salt tolerant corrosion and scale inhibitor is composed of an oxazoline derivative, thiourea, cetyl pyridinium chloride, dodecyl dimethyl benzyl ammonium chloride, amino trimethylene phosphonic acid, hydroxyethylidene diphosphonic acid, hexamethylenetetramine, and methanol. The corrosion and scale inhibitor has very strong salt resistance, and under high salinity conditions (100000-200000mg / L), has a significant inhibiting effect on metal corrosion, and the corrosion inhibition rate can reach more than 80%. The organic phosphonic acid molecular structure of the reagent contain a double bond structure, the structure and the calcium ions and magnesium ions in water can chelate to form a stable complex to be adsorbed on seed crystal surface active sites, thereby inhibiting crystal normal growth. With significant scale inhibiting effect and a scale inhibiting rate up to 94%, the product is suitable for inhibiting corrosion and scaling phenomena of oil-gas well rods and pipes containing carbon dioxide, hydrogen sulfide and other complex media conditions under high salinity.

The invention discloses a new application of sodium hydrosulfide for promoting germination of wheat seeds under the stress of heavy metals, namely, the application is that the sodium hydrosulfide is taken as a sprout-promoting agent of germination in the soil polluted by heavy metals of Al<3+>, Cd<2+>, Cr<3+>, Cr<6+>, Pb<2+>, Hg<2> and the like. The invention can effectively improve the germinability of the wheat seeds under the stress of heavy metals, and induces the seeds to germinate fast and regularly. Research proves that the sodium hydrosulfide of the hydrogen sulfide donor is adopted to preprocess the wheat seeds, which can remarkably induce the activity expression of hydrolytic enzyme of amylase, protease, lipase and the like, in the seeds, enhances the oxygenolysis of storage matter, relieves the oxidative damage caused by the stress of the heavy metals in the seeds and maintains the lower membrane lipid overoxidation level in the seeds and the seedlings, thus being beneficial to the normal growth of embryo and radicle. The invention solves the key problem of restoring the production of the wheat in the areas polluted by heavy metals, has simple operation; the needed reagent is single and is easy to be obtained.

The invention discloses a culture method for tea-tar camellia young forest with early fruiting and rich yield, and belongs to the technical field of planting. The culture method comprises the following steps of selecting a forest land, arranging the forest land, selecting good seeds and strong seedlings, planting the seedlings, managing the young forest, arranging trees, adjusting the forest form, and the like. The method has the advantages that by accurately applying fertilizer, the nutrient supply for tea-tar camellia treelets is guaranteed, and the usage of the fertilizer is reduced; blossom buds are properly picked up in a young forest period, and the normal growth of the tea-tar camellia treelets is ensured; by removing part of young fruits at proper time, the quality of the remained fruits is higher, and tree body skeletons are favorably cultured; main branches are cultured by top picking and height control, the crown expanding purpose is realized by pulling branches to adjust the main branches, and each tea-tar camellia tree is cultured into a reasonable tree body structure with a wide crown.

The invention relates to a technical method for remedying cadmium-lead contaminated soil by animal-plant collaboration. The technical method comprises the following steps: digging a collaborative remediation bed of 5-10 m in side length and 0.5-0.7 m in depth near a governance target area; stripping contaminated soil to fill on the collaborative remediation bed; dividing the collaborative remediation bed into different areas; breeding earthworms in different categories in each area; analyzing the cadmium-lead contents in the earthworms in different categories in experiment after 30-45 days; screening the earthworm varieties with excess absorption and maximum accumulation of cadmium-lead; planting plants in different categories in the different areas of the collaborative remediation bed; reaping the plants during the harvest time; analyzing the cadmium-lead contents in stalk parts and leaf parts of the plants in experiment; screening the plant species with excess absorption and maximum accumulation of cadmium-lead; watering the collaborative remediation bed periodically to maintain the normal growth and propagation of animals and plants on the collaborative remediation bed. According to the invention, remediation and governance of the cadmium-lead contaminated soil are realized by the harvesting and reaping of the animals and the plants.

The invention discloses an unmanned aerial vehicle capable of spraying a variable amount of pesticide, which comprises a fuselage, a spraying system, a control system and an optical flow sensor, wherein the spraying system is mounted on the fuselage, the control system can control the spray amount of the spraying system according to the flight speed of the fuselage, a lens of the optical flow sensor is downward, the optical flow sensor is used for detecting the flight speed of the unmanned aerial vehicle, and the signal output end of the optical flow sensor is connected with the control system. The invention also discloses a method for spraying the variable amount of pesticide by using the unmanned aerial vehicle. The unmanned aerial vehicle capable of spraying the variable amount of pesticide and the method provided by the invention can effectively increase the uniformity of pesticide spraying to prevent excessive pesticide spraying from harming plants or prevent insufficient pesticide spraying from causing a substandard pesticide spraying effect, thus ensuring the normal growth of the plants, and the unmanned aerial vehicle and the method also reduces the usage amount of the pesticide, thus reducing cost; moreover, because full-automatic control is realized, the automation level is increased, and the difficulty of operation is decreased.

The invention relates to a domestication method for enhancing the salt resistance of festuca arundinacea. The domestication method comprises the following domestication processes that: a domestic garbage compost substrate is flatly spread on a sample plot, then the compost becomes compact and flat by press, and the average thickness of the compost substrate is 20cm; the sowing mode is spring sowing, water in the compost substrate, which is used for domesticating the festuca arundinacea in each year, only depends on natural precipitation, and the seeds of the festuca arundinacea are harvested after 4 domestication years; a lawn nursery strip mode is as follows: the carrier of the lawn nursery strip of the festuca arundinacea is designed into double layers, i.e. a lower layer is newspaper and an upper layer is face tissues, and the seeds of the domesticated festuca arundinacea are bonded between an upper carrier and a lower carrier by an adhesive; the sowing quantity is 0.02g / cm2; after the seeds germinate, the seeds are transplanted onto a saline soil substrate with the salt content of 0.5 to 1 percent, the temperature is controlled at 20 to 26 DEG C, the relative humidity is 30 to 50 percent, and the normal growth of plants is guaranteed; and after the plants of the festuca arundinacea are cultured for 35d, lawn plants and the substrate are mown, and the salt resistance of the domesticated festuca arundinacea is measured after treatment.

The invention relates to a porous concrete ecological capsule slop protection process, which comprises making ecological capsules which are braided by fiber material such as palm ropes and twines and the like, storing doras, water-retention material, slow-release fertilizer, insecticide and plant seeds, placing the ecological capsules in the grooves of the porous concrete ecological capsule blocks, matching an upper and a lower porous concrete ecological capsule blocks through the way of bolt or direct binding, placing the porous concrete ecological capsule blocks on hard slope protection, connecting each porous concrete ecological capsule block with bolts or jump rings, and binding the space between the porous concrete ecological capsule blocks with cement and wholly hinging on the top portion of the slop protection. The advantages are that solving the difficulty of the ecological repair of the hard slop protection, guaranteeing the normal growth of plants which are covered on the hard slop protection, and purifying water and increasing water landscape. The process is applied on the hard slop protection project of river and lakes, which solves the problems of plant growing stroma loss which is caused by scouring, plant growing difficulty and reducing flood control function which is caused by the improper reconstruction for the original slop protection.

The invention provides a cadmium contaminated mine soil remediation agent as well as preparation and application methods thereof. The remediation agent contains the following components in parts by weight: 15-30 parts of modified clay minerals, 20-35 parts of quick lime, 30-45 parts of organic fertilizers, 15-30 parts of charcoal and 1-5 parts of polymerized high molecular compounds. The preparation method of the remediation agent comprises the following steps: grinding and crushing clay minerals to 100 meshes, calcining at a high temperature, cooling, and grinding into granules or powder; taking forestry and agricultural residues as main raw materials, adding feces of livestock and poultry, externally inoculating a source inoculant, and fermenting by 5-15 days; taking crop straws as raw materials, performing high temperature pyrolysis, cooling to the room temperature, grinding, and passing through a 100-mesh sieve; and finally, uniformly mixing the modified clay minerals, quick lime,organic fertilizers, charcoal and polymerized high molecular compounds according to a certain ratio. The cadmium contaminated mine soil remediation agent is applied at a dose of 1-2 tonnages per mu, can achieve effects of effectively reducing the available cadmium in mine soil, regulating the pH value and ensuring normal growth of mine vegetation, and has great significance for restoring the minevegetation.

The invention discloses attapulgite paper pulp floral clay and a production method thereof. The attapulgite paper pulp floral clay is characterized by being prepared from high-viscosity attapulgite clay powder, bentonite powder, paper pulp sludge, aluminum sulfate, polyacrylamide, potassium permanganate, urea, potassium dihydrogen phosphate, sodium carboxymethyl cellulose and deionized water. The production method comprises the following steps of: dissolving the urea and the potassium dihydrogen phosphate in the paper pulp sludge, then adding the high-viscosity attapulgite clay powder and the bentonite powder in the paper pulp sludge, and stirring to form a mixture of the attapulgite paper pulp floral clay; adding a sodium carboxymethyl cellulose solution into the mixture and stirring to form a semi-finished product of the attapulgite paper pulp floral clay; adding the semi-finished product into a die, and pressing into a finished product of the attapulgite paper pulp floral clay by using a press machine. The attapulgite paper pulp floral clay contains nutrient ingredients required by fresh flowers, is beneficial to the normal growth of branches and leaves and prolonging the florescence, has low waste utilization cost, and is suitable for retaining freshness of fresh flowers in florists, hotels, office buildings and families.

The invention discloses a class of anti-tumor compounds containing a triazole heterocyclic structure and an application thereof, belonging to the technical field of medicinal chemistry. The compounds containing the triazole heterocyclic structure introduce quintuple 1,2,3-triazole ring in the form of side chains through the amino condensation, bromination, nitrine substitution, link reaction and other reactions on the basis of naphthalimide parent structure, select tetrazolium salt reduction to test 7721 hepatocellular in the experiment of inhibiting proliferation of tumor cells, and also select sulfonyl rhodamine B protein staining method to test MCF-7 breast cancer cells. The experiment results show that the anti-tumor compounds have wide anti-tumor activity and good inhibition effect on the normal growth of tumor cells derived from different tissues of liver cancer, breast cancer and the like.

The invention relates to rice safety production technology in cadmium-polluted paddy fields, in particular to a regulator suitable for rice safety production in cadmium-polluted paddy fields. A mixture of sepiolite and lime or sepiolite and calcium dihydrogen phosphate was applied as a conditioner to the contaminated soil for growing rice. By applying the paddy field regulating preparation of the present invention, the rice varieties can realize normal growth of rice in paddy fields polluted with medium and low levels of cadmium, and the cadmium content in the rice meets the cadmium limit value of my country's agricultural industry standard pollution-free rice (NY 5115-2008).

The invention relates to a compound microbial preparation for promoting paddy growth and a preparation method thereof. The compound microbial preparation for promoting paddy growth is characterized by consisting of 20-40 parts by weight of a microbial strain culture and 60-80 parts by weight of a microbial carrier; wherein, the microbial strain culture consists of the following raw materials in parts by weight: 2-8 parts of bacilli subtilis, 2-8 parts of bacilli megaterium, 5-10 parts of saccharomyces cerevisiae and 1-4 parts of rhizobia; the microbial carrier is zeolite or bentonite or mixture thereof. The compound microbial preparation has the advantages of promoting growth of beneficial microbes, enhancing absorption of nitrogen, phosphorous, potassium and other organic substances for paddy root system and promoting normal growth of the root system, thus promoting the paddy growth and reducing chemical fertilizer application.

The invention discloses a method for planting cotton in coastal heavy saline-alkali land. The method comprises the following steps of: A, consolidating land, and building a strip field or a platform field; B, irrigating by using saline water in winter and icing; C covering by using a mulching film; D, sowing; E, performing growth period management; and F, picking in time after cotton bolls are fully cracked and opened. In the method, a series of measures such as land consolidation, icy irrigation of saline water in winter, ice melting spraying of saline water in spring, salt inhibition and soil moisture conservation through mulching film coverage and the like are adopted, so that the salt content of soil in cotton root layers is reduced, and the normal growth of the cotton is ensured; and the method is easy to operate and low in cost, can be applied to coastal saline and alkaline areas, and has remarkable economic, social and ecological benefits.

The invention relates to a roof ecological planting system and a construction method thereof. An insulating layer, a waterproof anti-root piercing layer, a cement mortar protective layer, a drainage layer, a filtering layer, a plant substrate layer and a roof utilization layer are arranged on a base structure layer sequentially, wherein the waterproof anti-root piercing layer adopts an anti-plant root piercing waterproof coating; the drainage layer adopts plastic anti-drainage plates; and joints between the plastic anti-drainage plates and the periphery of a pipeline are bonded by an anti-plant root piercing adhesive. The entire system has the advantages of reducing construction processes, shortening construction period and lowering construction cost, along with excellent material performance and clear function of each layer. Three anti-plant root piercing protection lines consist of the anti-plant root piercing waterproof coating, a drainage plate, a cement mortar protective layer and the anti-plant root piercing adhesive, so that the system can adapt to normal growth of various plants and the waterproof function of a roof for long-term use is guaranteed.

The invention relates to a method for conserving chrysanthemum in vitro through reducing major element in the medium, which is special for the in vitro conservation of the chrysanthemum germplasm resource. The invention comprises the steps of: taking the suckers of the chrysanthemum as the explants, and axillary buds for subculture, and conserving on the 1 / 2MS, 1 / 2MS (1 / 2NH4+) or 1 / 4MS medium containing 6-BA0.3mg / L and NAA0.1mg / L. The survival rate for a 12-month conservation is 100%, 8 months longer than that of conservation on the normal MS medium. After the conservation material recovers to normal growth, the descendant is proved to have no genetic variance through the detection of POD, EST and ISSR. The invention uses the method of conserving chrysanthemum test-tube plantlet through reducing major element in the medium and identifies the genetic stability of the descendant, which proves that the plants grow normally after one-year conservation and the descendant has no genetic variation.

The invention discloses a high-nutrition foliage fertilizer for improving plant stress resistance. A filtrate, namely a finished product is obtained by the following steps: mixing and dissolving water, compound amino acid, monopotassium phosphate and citric acid; adding alcohol and salicylic acid into the mixture for a coupling reaction; orderly adding Na-EDTA, FeSO4, ZnSO4, MnSO4, CuSO4, MgSO4, H3BO3, vitamin C, Na2MoO4, KNO3, and urea respectively for a hybrid reaction; and filtering after the complete reaction. The high-nutrition foliage fertilizer has simple preparation technology and low cost, can effectively improve the stress resistance of plants, directly promote the root growth of the plants, adjust the physiological function of the plants, improve the resistances of the plants such as disease resistance, drought resistance, cold resistance and the like, has the characteristics of full nutrition, good absorption effect and the like, and provides due guarantee for the normal growth of the plants, thereby laying a solid material basis for improving the quality of farm products.

The invention discloses a plant photosynthesis promoter, which comprises the following components in percentage by weight: 0.5 to 10 percent of 5-aminolevulinic acid and salts thereof, 0.05 to 1 percent of triacontanol, 70 to 95 percent of potash fertilizer, 1 to 10 percent of cyclodextrin, 0.5 to 5 percent of wetting spreader, and 0.1 to 5 percent of UV protective agent. The preparation method comprises the following steps of: A, adding triacontanol crystals and water in a weight ratio of 1:100-200 into a reactor, heating to the temperature of between 90 and 100 DEG C, adding the cyclodextrin with high-speed stirring, continuously stirring for 10 to 20 minutes, and performing spray drying on the mixed solution to obtain triacontanol emulsifiable powder; and B, crushing and grinding the triacontanol emulsifiable powder obtained by the step A, the 5-aminolevulinic acid and salts thereof, the potash fertilizer, the wetting spreader and the UV protective agent, sieving by using a 20-meshsieve, and mixing uniformly to obtain the finished product. The plant photosynthesis promoter can obviously improve the plant photosynthesis efficiency under the adverse conditions such as weak light, low temperature and dry heat, ensures the normal growth of the plants, and has the advantages of no pollution, no residue and no harm to human bodies and animals.