166results about How to "Increased root length" patented technology

The invention relates to a Bacillus amyloliquefaciense BA-KA3 and application thereof. The Bacillus amyloliquefaciense BA-KA3 is preserved in China General Microbiological Culture Collection Center on October 23, 2013, and has preservation No. CGMCC8342; its on tomato gray mold germs has obviously of antagonistic anti-role, on wheat scab bacteria. The Bacillus amyloliquefaciense BA-KA3 has obvious antagonistic effect on Fusarium graminearum, Rhizoctonia cerealis, Alternaria alternata, Phytophthora capsici, Colletotrichum capsici, Cercospora personata, Alternaria alternate and Garlic sclerotinia disease, and can significantly improve plant growth indexes such as germination rate, and budding rate and root length of seeds,and especially applies to preparation of agricultural preparations for control of tomato diseases due to Botrytiscinerea invasion and has certain growth promotion effect.

A coating agent for rape seed is prepared from assistant, chemical and water through proportionally mixing and stirring. Said assistant includes filming agent, surfactant, anti-freezing agent, penetrant, etc. Said chemical includes insecticide, bactericide, plant growth regulator, trace element, fertilizer, etc. Its advantage is high effect to prevent and eliminate diseases and pests and increaseyield.

The invention discloses arbuscular mycorrhizal fungi GZ176 for disease prevention, growth promotion and adverse resistance of herbaceous plants and microbial inoculums and application of the arbuscular mycorrhizal fungi GZ176. The arbuscular mycorrhizal fungi GZ176 is rhizophagus intraradices and can be made into powder with concentration being 40-60 spores per gram, herbaceous plant disease prevention rate is up to 71.3% after the arbuscular mycorrhizal fungi GZ176 powder is subjected to seed dressing under normal management conditions of greenhouses, and herbaceous plant growth promotion rate is higher than 16.19%; in the field, disease prevention and control rate reaches 75.27%, and yield increasing rate exceeds 36.17%; adverse resistance of the herbaceous plants can be improved remarkably.

The invention relates to a Paenibacillus polymyxa Jaas ed2 with the functions of disease prevention and growth promotion to crops and application thereof, and belongs to the technical field of intensive agriculture production. The bacterial strain Jaas ed2 adopted by the invention has been preserved at the General Microbiological Culture Collection Center of China Microbiological Culture Collection Administration Committee on Sep. 18th, 2012 with the preservation number of CGMCC No.6580. The bacterial strain has the antagonistic activity to verticillium lecanii of eggplant, oxysporum of watermelon and other various pathogenic fungi, can enter plants of eggplants and watermelons in case of lower concentration of bacterium for colonization and conduction in the crops, can be used for promoting growth and preventing diseases of crops, and particularly has excellent control efficiency to soil-borne vascular bundle diseases, is low in production cost, simple to operate, facilitates ecological environment protection for farmlands, and reduces pesticide residue when used as a preparation, thereby meeting requirements for production of nuisance free agricultural products in China.

The invention belongs to the field of plant tissue culture, and particularly relates to a method for promoting rooting of a butterfly orchid tissue cultured seedling by utilizing an LED light source. The method specifically comprises the following steps: (1) performing induced culture by taking a butterfly orchid flower as an explant to obtain a cluster bud; (2) multiplying and culturing the cluster bud obtained in the step (1), dividing the multiplied and cultured cluster buds into single buds and inoculating the single buds into a rooting culture medium; (3) culturing and rooting the cluster buds which are inoculated into the rooting culture medium in mixed light consisting of three single-color lights including red light, blue light and far-red light. According to the method, the treatment of the mixed light added with the far-red light promotes the growth of the roots of butterfly orchid seedlings, so that accumulation of dry matters is increased, and the growth of the underground parts is not inhibited; meanwhile, the method has the advantages of lowering the production cost and saving energy.

The invention provides a degradable straw seedling tray and a production method thereof. The degradable straw seedling tray comprises, by weight, 8-12 parts of waste paper pulp, 8-12 parts of bamboo pulp, 56-84 parts of straw powder, 1-2 parts of biological glue, 1-2 parts of microelement complex fertilizer and 80-120 parts of water which are all pressed and moulded after stewing and mixing. The degradable straw seedling tray and the production method thereof have the advantages of being moderate in hardness, portable, environment-friendly in material, easy to degrade and reusable, and the straw seedling tray can be absorbed by crops as base fertilizer; by the application of the stray seedling tray, the germination rate of the crops is high, roots of seedlings are long, density and root-shoot ratio of the roots are obviously increased, and the survival rate of the cultivated seedlings after planting is high; the production method is scientific and simple, adding of any other chemical raw materials or fertilizer is not needed, characteristics of the raw materials are sustained, and certain fertilizer effect is achieved.

The invention discloses a sugar-increasing high-yield green planting method for beta vulgaris. The method comprises the following steps: step 1, selecting seeds and performing pretreatment; step 2, preparing a traditional Chinese medicine sterilizing liquid; step 3, sterilizing the seeds through immersing; step 4, preparing a seed coating agent specially used for the beta vulgaris; step 5, treating the seeds of the beta vulgaris with the seed coating agent; step 6, accelerating germination; step 7, raising seedlings; step 8, pretreating planting land; step 9, transplanting the seedlings; step10, performing management in a seedling stage; step 11, performing leaf surface management in the seedling stage; and step 12, performing harvesting. The method provided by the invention significantlyimproves the virus resistant and mildew resistant ability of the seeds, so that the germination energy and the seed vitality are significantly improved, the seeds have a high seedling emergence rateand a quick germination speed, microenvironments for germination and seedling growth are excellent, the yield and the sugar content of the beta vulgaris can be significantly increased, the costs are reduced, the benefits are improved, and the method provides powerful guarantee for large-scale planting, and has higher practical value and good application prospects.

The invention relates to a bioremediation reagent for promoting hyperaccumulator growth and enhancing soil heavy metal extraction and a remediation method. Firstly, a hyperaccumulator is planted in in-situ contaminated soil, and plant growth promoting bacteria are inoculated to the plant rhizosphere, conventional culture, watering and moisturizing are carried out, the growth promoting characteristics of the plant growth promoting bacteria are utilized to promote plant growth and enhance the plant's efficient extraction of heavy metals from the contaminated soil, respective advantages of the plant and microbial remediation are brought into full play to draw on each other's strength, and can improve the disadvantages of low remediation efficiency, small plant biomass, long remediation periodand the like in single plant remediation, thus improving the phytoremediation efficiency, and achieving the purpose of complete remediation of soil heavy metal pollution.

The invention discloses a protein which is named as OsMSr2 and is from rice. The protein is (1) a protein formed from an amino acid sequence shown by the sequence 2 in a sequence table or (2) a plant stress resistance related protein derived from the protein (1) by replacing and / or deleting and / or adding one or more than one amino acid from the amino acid sequence shown by the sequence 2 in the sequence table. Introducing the coding gene OsMsr2 of the protein into a plant can increase the germination rate of seeds under adverse conditions, increase root length and root weight, increase the growth potential of the plant, ensure seeds are enlarged, increase the net photosynthetic rate of leaves and increase the tolerance of the plant under adverse conditions.

The invention discloses a soybean nuclear factor protein and encoding genes of the protein and applications of the protein and the encoding genes. The protein provided by the invention is named GmNFYB1 and derived from soybean (Glycine Max (L.) Merrill.) Dongnong 50, and the protein can be: 1) a protein consisting of amino acid residues shown in a sequence 2 in a sequence table; or 2) a protein which is related to the stress tolerance of plants, is derived from the protein (1) and is obtained in a way that one or more than one amino acid residue in an amino acid sequence in the sequence 2 is substituted and / or deleted and / or added. Experimental results show that under the drought stress, transgenic plants into which the soybean GmNFYB1 (soybean nuclear factor binding protein) is transferred have longer roots, higher proline content and are higher in yield.

The invention provides a straw biological matrix seedling-raising disk and a preparation method thereof. The straw biological matrix seedling-raising disk includes a seedling-raising disk and a bottom film arranged thereunder. A matrix is filled between the seedling-raising disk and the bottom film. The seedling-raising disk includes waste paper pulp, bamboo pulp, straw powder, bio-gum, a composite micro-fertilizer and water. The matrix includes plant straw, a straw fermentation agent, an additive, a seedling strengthening agent and water. The bottom film is a bast fiber mulching film. The seedling-raising disk is simple and scientific in preparation method and is free of addition of any other chemical raw materials or fertilizers, so that the seedling-raising disk keeps the characters of the raw materials and has a certain effect. The technical scheme replaces soil and a plastic seedling-raising disk by the straw biological matrix, which reduces the damage of white pollution. By means of the straw biomass for culturing seedlings of paddy rice for replacing the technology of seedling cultivation in nutrient soil in production over the years, the seedling-raising disk solves the problem that cultivated land is damaged and soil is difficult to obtain by farmers during a paddy rice seedling-raising process. The seedling-raising disk fully utilizes straw regenerated resources, thereby reducing environment-pollution due to straw incineration and achieving energy saving and emission reduction.

The invention discloses a soilless seedling raising medium for stevia rebaudiana and a preparation method thereof, and belongs to seed germination technology in the technical field of agriculture. The soilless seedling raising medium is prepared by uniformly mixing 80 to 90 weight percent of river sand and 10 to 20 weight percent of rotten stevia rebaudiana residue. The soilless seedling raising medium has the advantage that: the rotten stevia rebaudiana residue in the soilless seedling raising medium can make the seedling raising medium appropriately loose and facilitate raising seedlings, is a good organic matter fertilizer, and can meet the nutrient requirement in the seedling raising process. The seedling raising medium has the advantages of low cost, high quality, easy disinfection, and capacity of reducing and stopping disease germs carried by seedlings transplanted to the field. The soilless seedling raising medium also has the advantages of simple formula, simple preparation and easy operation, and is particularly suitable to be promoted in industrial soilless seedling raising of the stevia rebaudiana.

The invention relates to a corn microbial seed coating agent and a preparation method thereof. The corn microbial seed coating agent comprises an active component and an auxiliary agent, Bacillus amyloliquefaciens or Bacillus velezensis is used as the active component, and water serves as a medium of the auxiliary agent. Sodium alginate and polyvinyl alcohol are used as film-forming agents. A thickening agent, a preservative and a coloring agent are added. The obtained corn microbial seed coating agent does not contain a bactericide, has a good growth-promoting effect while antagonizing the growth of pathogenic bacteria, can promote the germination of corn seeds and promote the growth of corn in the seedling stage, is efficient, low in toxicity, safe and reliable, meets the development requirements of green agriculture, is simple and feasible in preparation method, and has important practical value.

The invention discloses a crop growth regulator composition. Effective components of the crop growth regulator composition are acetyl-thiazolidine-4-carboxylic acid and auxin substances, wherein the auxin substance is any one of indoleacetic acid, naphthylacetic acid, indolebutyric acid, p-chlorophenoxyacetic acid and p-iodophenoxyacetic acid; the dosage forms of the crop growth regulator composition are soluble powder, soluble granules, water aqua and ultra-low volume spray. The composition is diluted to 1-2000 mg / kg with water, dipping treatment is conducted in a photinia fraseri seedling stage, fruit dipping treatment is conducted in a kiwifruit young fruit expanding stage, spraying treatment is conducted in a soybean initial flowering stage, and the effects of promoting root system development, promoting fruit enlarging or grain plumpness and increasing the yield are achieved; and moreover, the regulator composition disclosed by the invention is a regulator compound consisting of acetyl-thiazolidine-4-carboxylic acid and auxin substances, so that the number and the root length of crop root systems are increased, the fruit enlarging speed and the fruit weight can be increased, and the regulator composition has the characteristics of the quick effect and the strong activity.

The invention relates to metribuzin pesticide residue-degrading bacteria; the degrading bacteria are named as bacillus cereus N1 (Bacillus cereus N1) by classification, and are Gram-positive bacteria; a preservation number of the degrading bacteria in China Center for Type Culture Collection (CCTCC) is CCTCC NO: M2011163. Soil bioremediation microorganism prepared by the degrading bacteria and application are also disclosed. The metribuzin pesticide residue-degrading bacteria are bacterial strains which are obtained from sludge in a water spout of a insecticide factory for producing metribuzin and have strong degradation capacity to the metribuzin; the bacterial strains are grown by utilizing the metribuzin as exclusive nitrogen source; and thallus activity is increased by metribuzin induction in a liquid culture medium so as to improve the degradation capacity to the metribuzin. The microorganism provided by the invention is characterized by simple preparation method, relatively low cost and convenient implementation and can be dispersed on soil; degradation effect in the soil can reach to 68.19%; therefore, the microorganism has good application prospect.

The invention discloses an outcrop cultivation method for a Chinese herbal medicine by using a 50cm mulch film, relating to the technical field of medicine cultivation. The method comprises the steps of carrying out outcrop cultivation on a seedling by using the 50cm mulch film during transplanting. The outcrop cultivation method is suitable for planting scutellaria baicalensis, astragalus and liquorice, remarkable in yield increasing effect and also capable of remarkably increasing the root length, root diameter and top-quality good rate and improving the commodity characteristic of the Chinese herbal medicine. According to the invention, natural resources such as light, heat, water, soil and the like are sufficiently utilized to ensure that the Chinese herbal medicine is vigorous in growth and further enhanced in cultivation of resilience and pest and disease resistance, so that the kinds and occurrence rate of pest and disease damages are correspondingly reduced, and the usage number and usage amount of pesticides are correspondingly reduced.

The invention discloses an IbAITR5 gene derived from ipomoea batatas, a protein encoded by the IbAITR5 gene and application of the protein. The invention firstly discloses the IbAITR5 gene derived from the ipomoea batatas; and the gene is a DNA molecule as shown in SEQ ID NO. 2 or a DNA molecule with a coding sequence as shown in SEQ ID NO. 2. The invention further discloses the protein coded by the above-mentioned gene and the application of the protein. The IbAITR5 protein and the coding gene thereof are discovered; the coding gene of the IbAITR5 protein is introduced into the ipomoea batatas to obtain transgenic ipomoea batatas plants overexpressing IbAITR5; the transgenic plants are subjected to drought stress treatment, and the drought resistance of the transgenic plants is enhanced;and the IbAITR5 protein and the coding gene thereof have important application value in improvement of drought resistance research of plants, and have wide application space and market prospects in the agricultural field.

The invention discloses an efficient cultivation method of intercropping flue-cured tobacco and soybeans. The efficient cultivation method includes the following steps that (1) base fertilizer is applied in furrows before ridging in a tobacco field; (2) soil preparation and ridging are carried out on the tobacco field in good time; (3) the whole ridges are covered with a mulching film; (4) two rows of shaft well type transplanting holes are formed in the two sides of each ridge top, and two rows of crop planting holes are formed in the zone between the two rows of shaft well type transplanting holes; (5) flue-cured tobacco is transplanted in a shaft well mode, and tobacco plant transplanting position is located over the base fertilizer applied in furrows; (6) while the flue-cured tobacco is transplanted, soybeans are sown in a dibbled mode in the two rows of crop planting holes; (7) the flue-cured tobacco and the soybeans are managed through the normal method in the following steps. The influence on flue-cured tobacco growth by spring drought in the southwest region, the nicotine content of the flue-cured tobacco on the upper portion is reduced remarkably, the potassium content of the flue-cured tobacco on the upper portion is obviously increased, richness and diversity of rhizosphere soil bacterial communities of the tobacco plants are remarkably improved, flue-cured tobacco successive cropping obstacle is overcome, the income of peasants is increased additionally, and the efficient cultivation method is particularly suitable for the southwest region in China.

The invention discloses an efficient and standard cultivation technology and a storage method for celery and belongs to the technical field of agricultural cultivation. The efficient and standard cultivation technology for celery comprises following steps: cultivating strong seedlings, field planting, integration of water and fertilizer and harvesting. The fertilizing strategy is as follows: cultivating strong seedlings: applying urea 13.8 jin per mu; soil preparation and fertilization: applying composite fertilizer 13.5 jin per mu; integration of water and fertilizer: flushing fertilizer 15.9 jin per mu; the composite fertilizer has the ratio of N:P:K=1:1:1; the flushing fertilizer has the ratio of N:K=13:40. The beneficial effects of the invention are: by means of the method for cultivating celery, the yield of celery is substantially increased; the yield per mu exceeds ten thousand jin, which is increased by 20% compared with average mu yield of former years and each mu has 3600 to 14000yuan increment. The economic benefit is increased. Besides, the integration of water and fertilizer is realized in celery cultivation which drives the application of integration of water and fertilizer of other crops; the method is water saving and fertilizer saving and efficient and time and labor saving; water and soil pollution is avoided and good ecological benefit is obtained.

The invention provides tebuconazole pesticide degrading bacteria, a soil bio-remediation fungicide based on the bacteria and application of the soil bio-remediation fungicide and belongs to the technical field of biology. The tebuconazole pesticide degrading bacteria are classified and named serratia marcescens H2, the strain is gram staining reaction negative bacteria and is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO:M 2016478, and the preservation date is 13th September, 2016. The tebuconazole pesticide degrading bacteria are a strain which is separated from soil using tebuconazole for many years through enrichment culture and has high degrading capacity to tebuconazole. According to the strain, tebuconazole serves as a unique carbon source for growth, the thallus activity is improved through tebuconazole induction in a liquid medium, and the degrading capacity to tebuconazole is improved. A preparation method of the fungicide is simple, cost is low, application is convenient, the fungicide can be scattered on the soil, the degrading effect in the soil can reach 88%, and the fungicide is suitable for removing pesticide residues in the soil, and has great significance in protecting ecological environment and food safety.

The invention belongs to the field of scindapsus aureus nutrient solutions and discloses a soilless culture nutrient solution for scindapsus aureus, which is characterized by comprising the following three mother liquor components: a mother liquor (A) containing 100-250 mg / L of NH4NO3, 100-200 mg / L of KCl and 100-250 mg / L of CaCl2.H2O, a mother liquor (B) containing 400-650 mg / L of MgSO4.7H2O and300-550 mg / L of KH2PO4, and a mother liquor (C) containing 1-5 mg / L of EDTA-Fe (Ethylene Diamine Tetraacetic Acid-Fe) (chelate iron) and 0.120-0.180 mg / L of FeSO4.7H2O, wherein the mother liquor (A),the mother liquor (B) and the mother liquor (C) are proportioned in a volume ratio of 1000:800:20 and are diluted with water to 100 times when in use. By using the soilless culture nutrient solution,plants can be sturdier.

The invention discloses a tea seedling mycorrhization cutting breeding new method. The tea seedling mycorrhization cutting breeding new method promotes tea seedling cutting breeding by inoculating arbuscular mycorrhizal fungi and comprises the following steps of separating arbuscular mycorrhizal fungi dominant monads; performing fungi propagation by planting whiter clover; preparing seedbeds; cutting branches in a short-scion cutting breeding method; inoculating the propagated mycorrhizal soil; performing tea garden management. By inoculating AMF (arbuscular mycorrhizal fungi), the tea seedling mycorrhization cutting breeding new method can promote tea seedling cutting breeding and growth of root systems of tea seedlings, improve the quality of bred tea seedlings, shorten the tea seedlingbreeding cycle, increase the economic benefits and achieve high significance to development of tea industry.

The invention provides a water-culture method for relieving a toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of MeJA. The water-culture method comprises the following steps: disinfecting tomato seeds by virtue of sodium hypochlorite, uniformly putting the tomato seeds into a tray containing vermiculite, when each tomato seed grows to present two leaves and a core, transferring the tomato seeds into a water-culture tank, and carrying out culture for three weeks; and spraying MeJA with a concentration of 10umol / L to leaves of tomato seedlings, and processing the tomato seedlings by virtue of 2mg / kg Cd(CdCl2.2.5H2O) after 24h. According to the method, the Cd content of tomato roots can be effectively decreased, the biomass of the tomatoes under Cd stress canbe increased, the content of endogenous hormones in the tomato seedlings can be regulated, and oxidative damage of tomato cells as well as synthesis inhibition of photosynthetic pigments caused by the Cd stress can be relieved, so that the quality of the tomatoes is improved.

The invention discloses a disease-preventing, growth-promoting and stress-resisting bacillus amyloliquefaciens Y15 for all plants and an application of the bacillus amyloliquefaciens Y15. The bacillus amyloliquefaciens is a biocontrol bacterium Y15, which is preserved in China General Microbiological Culture Collection Center on November 22, 2016, with strain preservation number of CGMCC NO.13327. An inoculant, which is higher than 1*10<8>CFU / mL in concentration, can be prepared from the bacterium; under a room-temperature normal management condition, the bacillus amyloliquefaciens Y15 inoculant, applied to root irrigating treatment, can achieve a biocontrol effect, which is greater than 50%, on various plant diseases; the inoculant can achieve a growth-promoting effect, which is greater than 18%, on various crops; in fields, an effect of preventing and controlling various diseases is greater than 47.05%, showing a quite obvious growth-promoting effect; and in addition, the inoculant can significantly enhance stress resistance of the plants.

The invention discloses an antibacterial composition for open type plant tissue culture and a preparation method thereof and belongs to the field of bacteriostatic agents for the open type plant tissue culture. According to the antibacterial composition, it is firstly found out through component screening tests that the antibacterial composition formed by matching caesalpinia cucullata, belladonna herbs and aristolochia fordiana can effectively restrain bacteria as well as remarkably increase the plant height of test-tube plantlets, promote growth of roots and increase the number of roots; it is further found out that a better synergic effect is achieved after the caesalpinia cucullata, the belladonna herbs and the aristolochia fordiana are matched according to the mass ratio of 16-20:3-5:4-6, particularly a remarkable synergistic synergia effect is achieved after the caesalpinia cucullata, the belladonna herbs and the aristolochia fordiana are matched according to the mass ratio of 18:4:5, pollution of a rooting cultivation medium can be effectively inhibited, and the effects of increasing the plant height of test-tube plantlets and promoting growth of roots and increasing the number of roots and the like are more remarkable; by means of the antibacterial composition, equipment investment of tissue culture is effectively lowered, the environment requirement is low, operation is simple and benefits are high.

The invention discloses a seed initiator, which comprises the following active components in percentage by weight: 1%-5% of nitric acid rare earth, 0.05%-0.15% of gibberellin GA3, 0.1%-0.5% of vitamin C and the balance being water, wherein seeds are soaked with the initiator prepared from the components for 12 hours at the seed-medicine ratio of (1 to 1) to (1 to 4) and then are dried into original weight at 35 DEG C; the initiator has a good initiation effect on crop seeds after initiating, so that the phenomenon of rotten seeds and seedlings is obviously reduced; the indexes such as the emergence rate, the plant height and the fresh weight are obviously improved, and are obviously superior to those of a single agent of the components and a common initiator; a good synergistic facilitation effect is displayed; the seed initiator is a good initiator applied to the crop seeds; and the initiator is available in active compound, low in cost and convenient to prepare.

The invention belongs to the technical field of drug cultivation, and in particular relates to a drought-resistant cultivation method of codonopsis pilosula. The method is carried out according to thefollowing steps: step 1, land selection and soil preparation; step 2, fertilization; step 3, seedling selection; step 4, transplanting method; step 5, field management, step 6, disease and pest control; step 7, excavation; and step 8, storage. According to the drought-resistant cultivation method of the codonopsis pilosula, temperature can be increased and soil moisture can be maintained, therebyfacilitating yield improvement of medicinal materials; natural resources of light, heat, water, soil, etc. are fully utilized, so that Chinese herbal medicines grow vigorously, and resilience and pest and disease resistance are further enhanced, therefore, occurrence variety and incidence rate of diseases and insect pests are correspondingly reduced, use number and use amount of pesticides are reduced correspondingly, root length and root diameter of the codonopsis pilosula can be significantly improved, thereby increasing a ratio of first-class products, and improving commercial characters of the medicinal materials.

The invention discloses streptomyces sp.WY228 of arctium lappa L., a microbial agent containing streptomyces sp.WY228 and application. The classification of the strain is named as streptomyces sp.WY228, the strain belongs to streptomyces and is preserved in the Guangdong culture collection center, the preservation number is GDMCC 60274, and the microbial agent includes an effective component, namely the streptomyces sp.WY228 of arctium lappa L.. The streptomyces sp.WY228 of arctium lappa L. and the microbial agent can be used for promoting the growth of seedlings of arctium lappa L. and tomatoes. The provided streptomyces sp.WY228 of arctium lappa L. has the potential of nitrogen fixation and diversified growth promotion characteristics. The microbial agent of the streptomyces sp.WY228 ofarctium lappa L. has a great growth promotion capacity on arctium lappa L. and tomatoes and good application potential on planting of crop seedlings.

The invention discloses a soy nuclear factor protein GmNFYB and a coding gene and an application thereof. The soy nuclear factor protein GmNFYB provided by the invention comes from soy protein (Glycine max (L.) Merrill.) Dongnong 50 and is shown in 1) or 2): 1) protein composed of amino acid residues shown in a sequence table SEQ ID NO.2; 2) protein related to plant stress tolerance, derived from 1) and obtained by substituting and / or deleting and / or adding one or a plurality of amino acid residues in the amino acid sequence of the SEQ ID NO.2. A transgenic plant prepared by the protein GmNFYB1a provided by the invention or the coding gene thereof is higher in germination rate and longer in root under drought stress / salt stress.

The invention discloses a method for improving salt tolerance of plants. In the method for improving the salt tolerance of the plants, cell membrane Na+ / H+ reverse transport protein gene SpSOS1 and anH+-ATPase gene SpAHA1 are co-transformed into the plants, and the expression quantity and / or activity of SpSOS1 protein and SpAHA1 protein in the receptor plants is improved. Experiments prove that with the SpSOS1 protein and SpAHA1 protein, which is concretely embodied in that the salt tolerance of the plants can be improved, and the fresh weight, the root length, the number of lateral roots, the flowing speed of H+ ions, the flowing speed of Na+ ions and the content of K+ of the plants are increased, and the content of Na+ and malondialdehyde is decreased. With the method, the cell membraneNa+ / H+ reverse transport protein gene SpSOS1 and an H+-ATPase gene SpAHA1 are co-transformed into the plants to prove the salt tolerance for the first time, which directly proves that H+-ATPase can provide energy for an Na+ / H+ reverse transport system.