70results about How to "Improve agronomic traits" patented technology

The invention belongs to the fields of development and utilization of plant growth regulating substances, and discloses a hydrogen-rich liquid plant growth regulator. The saturation of hydrogen in a solvent is 0.1 to 100 percent, and the solvent is water, a 25 to 100 percent Hoagland nutrient solution, a Kimura B nutrient solution, a TAP nutrient solution or an MS culture solution. Calcium salt, salicylic acid, salicylate, salicylic acid derivative, humid acid or humic acid salt at the final concentration of 0-1,000mu mol / L is added into the solvent. Plants, plant tissues and seeds are irrigated, sprayed or soaked, the plant growth and morphogenesis can be effectively promoted, seed germination is quickened, heavy metal accumulation is reduced, and the oxidation resistance and stress resistance / tolerance are improved. The method has the characteristics of no pollution, environmental protection, low cost, and wide application range, and is applied to the fields such as farmland chemical regulation, provenance agriculture, environment and plant nutrition, plant tissue culture and cut flower preservation time prolonging.

The invention relates to a biological slow-release compound fertilizer, which comprises the following components in percentage by mass: 1 to 50 percent of animal blood membrane-forming agent, 40 to 90 percent of inorganic quick-acting fertilizer and 5 to 10 percent of binding agent, wherein the animal blood membrane-forming agent comprises the following components in percentage by mass: 10 to 50 percent of animal blood solid matter or derivatives thereof, 1 to 10 percent of high polymer membrane-forming agent, 1 to 20 percent of high polymer slow-release agent and the balance of water; the animal blood solid matter is animal blood powder prepared by drying animal blood; and the derivatives of the animal blood solid matter are chemically-modified animal blood powder prepared by performing chemical modification on the animal blood powder by using high polymer materials. The animal blood membrane-forming agent is water-insoluble and has the slow-release performance. Results of plot experiments in farm fields show that the biological slow-release compound fertilizer has obvious yield-increasing effect on crops, and improves the economical characters of the crops, especially vegetablesand lawns.

The invention discloses a novel green biological organic fertilizer and belongs to the technical field of agricultural biological fertilizers. The novel green biological organic fertilizer is prepared from the following raw materials: straw mixture, seaweed residue, humic acid, amino acid and multifunctional zymophyte. The novel green biological organic fertilizer provided by the invention has the advantages that nutrients required by crops can be provided, incidence of plant diseases and insect pests can be greatly reduced, usage amount of pesticide is reduced, and crop yield and quality are improved.

The invention discloses a flue-cured tobacco cultivation method fitting in with the light environment of the Yunnan tobacco-growing area and belongs to the technical field of tobacco plant cultivation. The flue-cured tobacco cultivation method comprises the following steps of float breeding, soil preparation and ridging, transplanting under film, management in film covering period and field management. The seeding time is from mid December to mid February, the float disc floating seedling method is adopted, and seeding hardening lasts for 8-14 days before transplanting; ridging is conducted after the soil is pulverized and moisture is stored, and inorganic fertilizer and cake fertilizer which is thoroughly decomposed are mixed to be applied to the field; the transplanting period is from mid March to mid April, the density of tobacco plants is 1000-12000 plant / mu, each tobacco plant is irrigated with 1.5-2.5kg root water after transplanting, and colored mulching film is covered; top dressing is conducted twice after transplanting, and seeding leading is conducted 15-25 days after the top of each tobacco seeding ejects the film; the mulching film is removed when the tobacco plants enter the mid of the vigorous growth period, earthing up, weeding and watering are conducted in time, and topping, leaf reserving and bifurcation removing are conducted. The flue-cured tobacco cultivation method can fitting in with the light environment of the Yunnan tobacco-growing area, the local light source can be utilized fully and reasonably, the quality of tobacco leaves can be improved, and the aroma style of the fen-flavor tobacco leaves is enhanced.

The invention belongs to the technical field of plant gene engineering, in particular to a modified glyphosate-resistant gene and a glyphosate-resistant rice cultivation method and comprises modification of glyphosate genes, building of plant expression vectors of the glyphosate-resistant gene and a glyphosate-resistant transgenosis rice cultivation method. Artificially-synthesized modified glyphosate-resistant gene serves as a target gene, the sequence of the gene is as shown in SEQ ID NO: 1, and the target gene is led into rice receptors by an agrobacterium tumefaciens mediated transformation method to obtain high glyphosate-resistant transgenosis rice GT28. the glyphosate-resistant gene of GT28 is recombined by the aid of sexual hybridization and somatic hybridization technique to obtain new rice germplasm, and new glyphosate-resistant varieties (strains) of rice are cultivated.

The invention discloses a method for breeding a corn haploid induction line. An identification method for the colored embryo haploid of the induction line is developed so that haploid identification of the corn haploid induction line can be realized, thus doubling is conducted, an inducible line DH line with high inductivity, high identification efficiency and excellent agronomic traits can be screened out from the expression of four aspects of molecular marker-assisted selection inducible genes, inductivity, haploid identification efficiency and the agronomic traits, and the excellent haploidinducible line can be obtained within 1-2 years in the whole process. According to the method capable of rapidly breeding the corn haploid inducible line, the breeding process of the haploid inducible line is accelerated, a feasible scheme for solving the problems of long breeding period and large workload of the corn haploid induction line is provided, the breeding period of the haploid induction line can be greatly shortened, the workload of test of each generation is decreased, and the haploid breeding efficiency is improved, thus development of a corn haploid breeding technology is promoted, and the method has important significance.

The invention relates to an organic fertilizer for flowers and a production process of the organic fertilizer. The production process comprises the following steps: selecting corn straws, wheat straws, soybean straws and sesame straws according to a mass ratio of 2:2:1:1 and crushing straw grains; adding water, urea and ammonia water, and pre-treating to obtain a mixture A; treating respectively chicken manure and chicken feathers taken according to the mass ratio of 10:1 by ultraviolet lights and then treating by ozone; mixing to obtain a mixture B; adding aspergillus niger and saccharomycetes into a mixture of crushed peanut shells, crushed fallen leaves of broad-leaved trees and the water to obtain a mixture C; mixing the mixture A, the mixture B, the mixture C, shell powder and sodium humate; adding an EM bacterium agent and fermenting to obtain a mixture D; adding bone meal, plant ash and charcoal dust into the mixture D; then carrying out ozone sterilization, drying, split charging; and ultraviolet light sterilizing to obtain the organic fertilizer for the flowers. The produced organic fertilizer for the flowers contains various nutritional ingredients needed by the growth of the flowers and can be used for conditioning soil, activating the active rate of microorganisms in the soil, overcoming soil hardening and improving the air permeability of the soil.

The present invention discloses a method suitable for commercially inducing a corn haploid. The method comprises the following steps: carrying out hybridization of a corn haploid induction line I and a corn haploid induction line II to obtain a progeny recorded as an induction line hybrid, adopting the induction line hybrid as a male parent, carrying out hybridization of the induction line hybrid and a female parent material expected to obtain a haploid to harvest F0 hybridization kernel, and taking the haploid kernel to obtain the corn haploid, wherein the corn haploid induction line I and the corn haploid induction line II are different. Compared with the traditional method, the method of the present invention has the following characteristics that: on the basis of maintaining of a high induction rate, agronomy characteristics of the male parent (induction line hybridization combination) in the haploid induction is substantially increased, and especially a plant growth condition, a pollen disseminating amount, a pollen disseminating duration time, adaptability, resistance, and the like are substantially increased so as to improve haploid induction efficiency, provide a guarantee for efficient haploid induction, and provide possibility for large-scale haploid induction.

The invention relates to a compound microbial fermented soil conditioner including the following raw materials in parts by weight: 290-315 parts of urea, 290-315 parts of a nitrogen and potassium compound fertilizer, 235-260 parts of ammonium dihydrogen phosphate, 40-60 parts of potassium pyrophosphate, 1-3 parts of chelated iron, 3-5 parts of chelated zinc, 80-100 parts of a fermented product oflignite or weathered coal and a microbial agent, and 900-1100 parts of an anticaking agent. The compound microbial fermented soil conditioner provided by the invention comprises humic acid rich in mineral sources, solves the problems of soil hardening, acidification, salinization and the like, also has a good role in promoting plant root systems, and greatly improves other corresponding agronomictraits. The microbial agent has the abilities of nitrogen fixation, phosphorus removal, potassium removal, plant hormone production or antibiotic secretion, promotes the material circulation and nutrient supply in soil, and improves the soil fertility and the fertilizer utilization rate.

The invention discloses a breeding method of a rice species combining the properties of low glutelin and rice stripe disease resistance, which pertains to the field of rice breeding. W3660 is taken as a female parent and Zhendao 88 is taken as a male parent for hybridization; and since F2 generation, a single plant with a main ear having 12 grains, the holoprotein SDS-PAGE protein band pattern of which is in line with W3660 holoprotein band pattern, is selected for planting; WW1 and R15 marks are used for assisting the selection; by combining the field inoculation and manual inoculation certification of the plants with rice stripe disease resistance, a plant strain which has rice stripe disease resistance and is characterized in that the SSR fingerprint has a low glutelin characteristic band 237bp marked by WW1 and a rice stripe disease resistance characteristic band 363bp marked by R15, and the growth duration, plant height, and shape and characteristics of the plant leaves are identical with that of the Zhendao 88 is selected and named as W1721. After determination, the new rice variety W1721 has low glutelin content and less than 4% of the absorbable protein (including albumin-globulin and glutelin) content and has rice stripe disease resistance.

The invention discloses a pyramiding breeding method for a rice blast resisting rice variety with the excellent taste. The method comprises the steps that Wu rice 13 and Guandong 194 are selected to be hybridized and matched; then the generation F1 and Wu rice 15 are subjected to multiple crosses, the generation F2 and the generation F3 are subjected to single plant mixed harvesting, marker-assisted selection of dark endosperm mutant genes and rice blast resisting genes is carried out on the product, the obtained dark endosperm mutant gene type is Wx-mqWx-mq, and the obtained rice blast resisting gene type is a three-gene homozygote of Pi-taPi-ta and Pi-bPi-b; subsequent generations are subjected to yield and agronomic trait selection, and rice blast resisting high-yield rice with stable and uniform agronomic traits and the excellent taste is bred on the generation F7. The rice is high in yield and resistant to rice blast and stripe virus diseases, the flexibility of sticky rice and the elasticity of polished round-grained rice are integrated, the taste and quality are very good, the rice is planted in Huaibei and the central region in Jiangsu province under the condition of high and medium fertility, and wide application prospects are achieved.

The invention relates to a breeding for culturing good-taste and brown stripe-resisting rice and belongs to the field of genetic improvement of rice and application of biological technology. The method comprises the following steps of: selecting Wujing 13 and Guangdong 194 for matched hybridization; performing individual mixed harvest in the F2 and F3 generations, and performing the molecular mark auxiliary selection of dark albumen mutant genes and brown stripe-resisting genes at the F4 and F5 generations to obtain the double-gene homozygote, of which the dark albumen mutant genotype is Wx-mqWx-mq and the brown stripe-resisting genotype is Stv-biStv-bi; and performing the selection of yield and agronomic character at following generations until the new variety of high-yield rice, namely Nanjing 5055, with stabile and consistent agronomic character, good taste and brown stripe resistance is cultured in the F7 generation. The variety of rice has the advantages of high yield, brown stripe resistance, the combination of the softness of glutinous rice and the elasticity of non-glutinous rice, excellent taste and quality and wide application prospect in proper plantations of riverside areas and southern part of Jiangsu Province.

The invention discloses a tobacco cultivation and fertilization method realizing tobacco field improvement and tobacco leaf quality improvement. The tobacco cultivation and fertilization method solvesthe technical problem that the tobacco field soil has a poor physical structure and nutrient imbalance. The method comprises: selecting uniform field pieces with medium soil fertility and flat terrain, preparing soil in the middle and last ten-day of April before the transplanting of the tobacco seedlings, mechanically leveling the tobacco field, carrying out row replacement on biochar, organic bacterial fertilizer and special fertilizer for tobacco, ridging the field through a double ditching method, wherein in ditching, fertilizer is applied to a position under the tobacco ridge, transplanting tobacco seedlings in the last ten-day of April to the first ten-day of May, applying enough water, covering the field with a mulching film, removing the mulching film when the tobacco grows to a rosette stage, carrying out ridging on the tobacco ridge, topdressing tobacco-specific compound fertilizer through a nesting fertilization method, carrying out field management measures and local cultivation technical regulation processes and harvesting mature tobacco leaves according to local regulations. Through reasonable combination of biochar and organic bacterial fertilizer, the soil nutrientbalance and biological properties are improved and the agronomic traits, yield, quality and economic traits of the tobacco are improved.

The invention belongs to the field of fertilizer preparation, and specifically relates to an extraction method for hermetia illucens antibacterial peptide and an application of the hermetia illucens antibacterial peptide in preparation of a fertilizer used for resisting tobacco diseases. In order to prepare the fertilizer used for resisting the tobacco diseases from the hermetia illucens antibacterial peptide, a composite bacterial liquid composed of a tobacco ralstonia solanacearum bacterial liquid, a tobacco wildfire bacterial liquid and a tobacco angular leaf spot bacterial liquid is used as an induction liquid; hermetia illucens is induced to generate a large amount of antibacterial peptide under acupuncture soaking treatment; the hermetia illucens antibacterial peptide is prepared through an enzymolysis method; and the obtained hermetia illucens antibacterial peptide is high in content and high in activity and has good inhibiting effect on tobacco ralstonia solanacearum, tobacco wildfire pathogenic bacteria and tobacco angular leaf spot pathogenic bacteria. Meanwhile, a foliar fertilizer used for resisting the tobacco diseases is prepared from the hermetia illucens antibacterial peptide, and shows good prevention and treatment effects on tobacco bacterial angular leaf spot, tobacco bacterial wilt and tobacco wild fire. The agronomic traits and quality of the tobacco can beimproved, and the economic value of the tobacco is improved.

The invention provides application of five plant growth-promoting rhizobacteria to improvement of the agronomic traits of plants. Specifically, the invention discloses application of the plant growth-promoting rhizobacteria to preparation of an agricultural preparation. The agricultural preparation is used for improving the agronomic traits of plants. The plant growth-promoting rhizobacteria are selected from a group of consisting of Flavisolibacter, Ferruginibacter, Lentzea, Solirubrobacter and Terrimonas or a composition thereof. The five plant growth-promoting rhizobacteria and the composition thereof can (i) promote seed germination, (ii) increasing plant height, (iii) promoting root growth, (iv) increasing a leaf area, (v) improving a tiller number and (vi) improving output; so the five plant growth-promoting rhizobacteria and the composition have good application prospects.

The invention relates to a breeding method of a japonica rice variety capable of controlling postprandial blood sugar of diabetes patients and belongs to the field of breeding of a new variety of rice. A japonica rice variety 'sugar-optimized rice No.1', in which content of resistant starch is higher than 10%, is bred in a manner of employing chalky rate, the content of amylose and the content of the resistant stratch and combining with methods such as molecular marker-assisted selection and the like. Yield of the 'sugar-optimized rice No.1' is higher than that of a 08JD26 strain and is 405 kg / mu. The invention belongs to the breeding method of a japonica rice variety in which the resistant starch is high in content. The method is used for breeding of the japonica rice variety which is suitable for the diabetes patients.

The invention discloses a preparation method of a bio-organic fertilizer which is prepared from nitrate mud, animal waste, flint clay, a rapeseed cake, phosphorus powder, plant ash and biogas fluid via combination and fermentation. The preparation process comprises the following steps: respectively airing the nitrate mud, the flint clay, the phosphorus powder, the rapeseed cake, the plant ash and the animal waste until the water content of the materials is lower than 12%, then respectively smashing the materials, mixing the materials and stirring uniformly to obtain a mixed material, mixing the biogas fluid with the mixed material to stir uniformly and adjusting the water content of the mixed material to 55-65%, and carrying out pile fermentation. The bio-organic fertilizer is wide in raw material source, low in cost, simple in preparation process, low in prepared product cost, comprehensive in nutrient element and good in fertilizer effect, and has the properties of increasing the organic matters of the soil, improving the soil structure, promoting the microbial activities of the soil, strengthening the fertilizer maintenance and fertilizer supply of the soil, increasing the crop output and improving the agricultural product quality.

The invention discloses a tobacco seedling cultivation substrate capable of strengthening seedlings and reducing cadmium absorption and a preparation method and a use thereof. The substrate includes earthworm excrement and attapulgite powder. The preparation method includes the step of mixing earthworm excrement and attapulgite powder at a weight ratio of 10:1 to 1:1. The preparation of the earthworm excrement includes the following steps: composting and fermenting cow dung to form a product of composting and fermenting; breeding earthworms with the product of composting and fermenting; artificially separating the earthworms; obtaining earthworm excrement; air-drying the earthworm excrement to obtain dry earthworm excrement; and sieving the dry earthworm excrement. The preparation of the attapulgite powder includes the following steps: preliminarily grinding attapulgite by a mechanical method; grinding the attapulgite by a ball milling method; and sieving the attapulgite. The tobacco seedling cultivation substrate prepared by the method can significantly increase the weight of tobacco leaves and reduce the content of metal cadmium in tobacco leaves.

The invention provides a soilless culture substrate for vegetables. The substrate contains the following raw materials in parts by weight: 50-82.5 parts of coffee shells, 2.5-15 parts of rapeseed meal, 5-20 parts of turf, 5-15 parts of perlite and 0.001-0.005 part of a plant growth regulator. The preparation method comprises the following steps: uniformly mixing the coffee shells and rapeseed meal, and adding a fermented compound microorganism bacterium agent and a functional bacterium agent for performing secondary fermentation. According to the soilless culture substrate for vegetables, disclosed by the invention, the coffee shells can be well utilized, and pollution of coffee shell wastes is reduced. Meanwhile, the substrate is low in production cost, can achieve the effects of effectively promoting growth of the vegetables, reducing diseases of the vegetables and increasing the yield of the vegetables, is applicable to soilless culture of vegetables or can be used as a vegetable seedling substrate.

The invention discloses an organic compound fertilizer for flowers and a preparation method of the compound fertilizer and relates to the field of fertilizers. The organic compound fertilizer for the flowers is prepared from, in parts by mass, 8-15 parts of chicken manure and chicken feather, 10-20 parts of straw, 1-2 parts of peanut shells, 2-3 parts of fallen leaves of broad-leaved trees, 8-12 parts of bone powder, 7-15 parts of charcoal powder, 30-40 parts of a chemical fertilizer, 5-15 parts of a conditioner, 2-7 parts of active substances, 9-15 parts of ammonia water, 5-8 parts of shell powder and 10-12 parts of sodium humate. With the adoption of the technical scheme, the compound fertilizer is suitable for growth of the flowers, water loss and evaporation can be reduced, the arid pressure is reduced, fertilizer maintenance is realized, the chemical fertilizer is reduced, salt and alkali damage is reduced, the soil fertility is improved under the condition that the dosage of the chemical fertilizer is reduced or the chemical fertilizer is gradually replaced, the agronomic trait of crops can be improved, the crops can have thick and stout stems and dark green leaf color and can bloom in advance, the disease resistance and the stress resistance of the flowers are enhanced, and diseases caused by continuous cropping of the flowers and soil-borne diseases are reduced.

The invention provides organic fertilizer for agricultural planting and a preparation method thereof. The organic fertilizer is prepared from base fertilizer, crop stalk, livestock excrement, ammoniachloride, agricultural rare earth, plant ash, bentonite powder, new precipitation metatitanic acid, selenium ore active powder, citric acid, biological bacteria, shell powder, candy pomace, regulatorand deionized water. The prepared organic fertilizer is suitable for crop growth, water loss and evaporation in soil can be reduced, drought pressure can be relieved, fertilizer can be maintained, chemical fertilizer can be reduced, salt and alkali damage can be relieved, on the condition that chemical fertilizer consumption is reduced or chemical fertilizer is replaced step by step, the soil fertility is improved, the crop agricultural character can be improved, crop stems are thick and solid, the leaf color is dark green, blooming is achieved in advance, the disease resistance and stress resistance of crops are enhanced, and diseases and soil transfer diseases caused by crop continuous cropping are relieved.

The invention relates to a preparation method of a disease and pest resistant flower fertilizer. The method includes the steps of: a. mixing agricultural and forestry waste with a herbicidal activity plant evenly, crushing the mixture into powder, adding water and ammonia water in order, mixing the substances evenly, conducting sealing, and performing placement under a natural state to obtain a mixture A; b. adding a nutrient into the mixture A and stirring the substances evenly, then adding yeast and conducting sealing fermentation, adding the fermentation product into a sodium hydroxide solution, adjusting pH, conducting heating and stirring to obtain a mixture B; c. adding a conditioner, charcoal powder, trace elements, sodium humate and an additive into the mixture B and stirring the substances evenly, then performing drying treatment to obtain a mixture C; and d. subjecting the mixture C to air drying treatment at room temperature, and then performing sterilization treatment, thus obtaining a finished product. The disease and pest resistant flower fertilizer prepared by the method provided by the invention can improve soil fertility, enhance disease resistance and stress resistance of flowers, and alleviate diseases and soil-borne diseases caused by continuous cropping of flowers.

The invention discloses a method for improving polysaccharide content of mushroom variety 808. The method includes the following specific steps: preparing raw materials, preparing mother seeds, preparing original seeds, preparing cultivation bags, culturing the cultivation bags at 25 DEG C with light intensity of 0 Lx, and placing the cultivation bags under blue light conditions for color conversion and fruiting management until hyphae are full of the bags. According to the method, the polysaccharide content can be obviously improved, the agronomic characteristics of the mushrooms are optimized, the yield of the mushrooms is improved, the activity of lignin degrading enzyme laccase and polysaccharide synthesis key enzyme UG Pase enzyme and the expression amount of correlative coding genesare improved, and the support for optimizing the existing mushroom cultivation mode, improving the planting benefits of the mushrooms and boosting the development of the mushroom processing industry is provided.

The invention discloses a fertilizer preparation for improving and restoring continuous cropping tobacco field soil and an use method thereof. The fertilizer preparation is prepared from the followingcomponents in parts by weight: 43 to 44 parts of rape seed cake, 17.2 to 17.6 parts of vinasse, 51.6 to 52.8 parts of wormcast, 3.0 to 3.2 parts of citric acid, 50 to 53 parts of perlite and 0.3 to 0.4 part of bacillus amyloliquefaciens. The fertilizer preparation is used as base fertilizer, so that the tobacco field soil volume weight is reduced; the contents of rapid available nitrogen, rapid available phosphorus and rapid available potassium are increased; the flue-cured tobacco agricultural property is improved; the chemical ingredient cooperated effect is improved; the yield, the production value and the first-class tobacco proportion is obviously increased; the economic benefits are obviously improved.

The invention relates to the technical field of tobacco leaf cultivation, and particularly relates to a cultivation method for improving the tobacco light energy utilization rate in Changsha tobacco area. The method comprises the steps of tobacco field preparation, ridging and grooving, watering, field planting, fertilizing, soil covering and film covering, threshing and the like; according to the method, G80 serves as the material, and the field experiment is carried out in Liuyang City, Hunan Province. On the optimization conditions that the nitrogen application rate is 12 kg / mu, the planting density is 1,300 plants / mu, and the number of remaining leaves is 16, the chlorophyll content, agronomic traits, group light transmittance and chemical composition of the tobacco leaves are better, so that tobacco plant development is moderate. Although the yield per mu of the tobacco leaves is decreased after roasting, the proportion of superior tobacco, average price per kilogram and per mu yield are obviously improved.

The present invention relates to a recombinant gene for improving herbicide, bacterial and fungal resistance as well as providing enhanced agronomic traits, the recombinant gene is characterized by nucleic acids comprising a first EPSPS gene with amino acid sequence of SEQ ID no. 1 and a second EPSPS gene with amino acid sequence of SEQ ID no. 2, wherein the recombinant gene is fused with a gene encoding a transcription factor with amino acid sequence of SEQ ID no. 3.

The invention relates to a high thousand-grain-weight gene of common wheat and application of the high thousand-grain-weight gene. A specific primer pair for detecting TaGS5-A1b-b genotype of wheat is 5'-TCATACACACATAATCCAGTCGA-3' and 5'-GATCGTGGGTGTTGCATCTAT-3'; a genome DNA (Deoxyribose Nucleic Acid) of wheat to be detected is taken as a template, and the primer pair is used to perform PCR (Polymerase Chain Reaction) amplification and then sequencing; if G is inserted into -1925bp position on the upstream of a TaGS5-A1b-b gene promoter, the gene TaGS5-A1b-b exists, and otherwise, the gene TaGS5-A1b-b does not exist. The detection primers disclosed by the invention can be applied to identification of TaGS5-A1b-b genotype wheat, and assists wheat molecular breeding and the like; the detection of TaGS5-A1b-b genotype in the molecular level can be directly realized, and important effects of improving grain sizes, the yield and other agronomic characteristics of the wheat are realized.

The invention provides a method for optimizing an agronomic trait of a flue-cured tobacco variety Guangdong tobacco 98 tobacco plant. The method comprises the steps of conducting cigarette ridge earth-up main treatment and soil recarburization assistant treatment on a transplanted cigarette plant, wherein the cigarette ridge earth-up main treatment comprises the procedures of uncovering film, conducting earth-up and covering straw during the resettleing growth stage, and the soil recarburization assistant treatment comprises the procedures of spreading turfy soil along a ditch in the cigarette ridge and then uniformly mixing with a fertilizer. According to the method, through the treatment of earth-up and soil recarburization, the influence of the treatment on delaying senility of leaves in each part of the cigarette plant in a land for growing field crops is discussed, and theoretical foundations are provided for actual production of the land for growing field crops with the adoption of a reasonable cultivation technique so as to improve the maturity-resistance of cigarette leaves in the field, improve the quality of the cigarette leaves, and manifest the highly flavored type style and characteristics of the cigarette leaves. The growth and development environment of the root of the cigarette plant in the land for growing field crops are effectively improved through the earth-up and the recarburization, thus the growth and development of the overground part of the cigarette plant in the land for growing field crops are promoted, and the agronomic trait is optimized in varying degrees. Measures of the earth-up and the recarburization have no interaction effects on the agronomic trait of the cigarette plant in the land for growing field crops, and the earth-up and the recarburization play independent roles.

The invention discloses an application and method of a brassica napus BnMAPK2 gene, and successfully constructs an overexpression vector driven by a 35S promoter by using a cloned full-length coding sequence of the brassica napus BnMAPK2 gene. Genetic transformation is carried out on plants through an agrobacterium infection method, and positive transgenic plants are obtained. The agronomic traitinvestigation on transgenic plants shows that the agronomic traits of the plants can be improved and the tolerance to heavy metal cadmium can be improved by overexpression of the brassica napus BnMAPK2 gene.

The invention relates to the technical field of inorganic fertilizers, in particular to a coated potash fertilizer as well as a preparation method and application thereof. The invention provides the coated potash fertilizer with a multilayer structure. The coated potash fertilizer comprises an inner core and an outer layer, the outer layer is a polyvinyl alcohol layer, or comprises an alkaline material layer and a polyvinyl alcohol layer from inside to outside; the raw material for preparing the inner core is potassium hydroxide, the raw material for preparing the alkaline material layer is calcium carbonate, and the raw material for preparing the polyvinyl alcohol layer is a polyvinyl alcohol aqueous solution. The coated potash fertilizer provided by the invention can effectively balancethe pH value of acid soil, and effectively improve the agronomic traits and economic benefits of crops.