50results about How to "Reduce transpiration rate" patented technology

The invention discloses an antitranspirant foliar fertilizer and a preparation method thereof. The antitranspirant foliar fertilizer comprises the raw materials of copper sulfate, ethylene diamine tetraacetic acid, monopotassium phosphate, zinc sulfate, ferrous sulphate, manganese sulphate, ammonium molybdate, composite rare earth, boric acid, sodium dodecyl sulphonate, urea, fulvic acid, hexanoic acid 2-(diethylamino) ethyl ester, compound amino acid, magnesium sulfate, calcium nitrate, ethylene diamine tetraacetic acid, microbial agent, azone and ammonia water. The antitranspirant foliar fertilizer provides nutrient elements and microbial agents which are required by the growth of plants, the rare earth and amino acid and other beneficial elements, can promote the growth of the plants, improve the yield, the quality, the stress resistance of the plants and the absorbing and operating capabilities on trace elements, simultaneously can effectively reduce the transpiration of the plants and is applied to afforesting in arid regions.

Isolated NCED3 nucleic acids and polypeptides are described herein, together with methods for using such nucleic acids and polypeptides for making transgenic plants with improved drought tolerance.

The invention provides methods for decreasing lignin content and for increasing the level of fermentable carbohydrates in plants by down-regulation of the NST transcription factor. Nucleic acid constructs for down-regulation of NST are described. Transgenic plants are provided that comprise reduced lignin content. Plants described herein may be used, for example, as improved biofuel feedstock and as highly digestible forage crops. Methods for processing plant tissue and for producing ethanol by utilizing such plants are also provided.

The invention discloses a water-saving conditioning double-source stereoscopic irrigation method for fruit trees. The water-saving conditioning double-source stereoscopic irrigation method includes establishing double-source stereoscopic automatic control fruit tree irrigation systems. Water, fertilizers, pesticides and plant growth regulators are automatically regulated and controlled in due timevia intelligent irrigation decision making systems by the aid of earth surface drip irrigation systems and aerial atomizing droplet sprinkler irrigation systems. The water-saving conditioning double-source stereoscopic irrigation method has the advantages that the yield of the fruit trees can be greatly increased by the aid of the water-saving conditioning double-source stereoscopic irrigation method, and the water use efficiency of the fruit trees can be greatly improved by the aid of the water-saving conditioning double-source stereoscopic irrigation method; the problem that requirements onexcellent growth of existing fruit trees cannot be met by independent irrigation systems in regions under extreme climatic conditions can be solved by the aid of the water-saving conditioning double-source stereoscopic irrigation method; the air humidity of fruit tree cultivation environments under extreme drought conditions can be increased, transpiration effects of leaves of the fruit trees canbe deteriorated to a great extent, accordingly, water wastage can be prevented, and fruit tree cultivation can be sustainably developed; the water-saving conditioning double-source stereoscopic irrigation method is implemented by the aid of the intelligent irrigation decision making systems, accordingly, irrigation can be automatically precisely regulated and controlled on time as needed, the labor intensity can be relieved to a great extent, and labor force can be saved.

The invention discloses a method for preparing a non-gel preservative. The method comprises the following steps: (1), weighing 4-10 parts of betaine, 3-6 parts of an antibacterial plant flavonoid extract, 2-3 parts of low-viscosity chitosan, 2.5-5 parts of an antioxidant, 1-2 parts of cinnamic acid and 5-10 parts of nanometer silicon dioxide; (2), dissolving the materials by heating in a water bath containing 40-50 times of an aqueous trehalose and seaweed polyphenol mixture solution by mass, adding 0.2-0.5 part of sodium phosphate and 0.4-0.6 part of glycerol, dissolving by stirring, adjusting pH by using acetic acid, stirring for 10-30 min, and cooling to room temperature to obtain the non-gel preservative. The preservative is used for keeping freshness of vegetable leaves or the soil-free flowers at room temperature; the betaine has an excellent effect in stress resistance as an osmotic pressure regulating substance, and the other components can form a viscous protective layer witha fresh-keeping effect; the various components act together to synergistically achieve the optimal fresh-keeping effect.

The invention discloses a large-scale forestation method of nutrient pot seedlings of sympodial bamboos, which comprises the following technical steps: (1) selecting the time from March to July as theseason of large-scale sympodial bamboo forestation; (2) clearing a piece of forest land; (3) distributing pit spots according to the requirement of a plant row spacing of 5m*8m; (4) digging pits; (5)preparing before planting seedlings; (6) obliquely planting: digging a plant fixing pit which is deep at the left side and shallow at the right side or deep at the right side and shallow at the leftside along the direction of the lower left corner or the lower left corner in the center of soil which is filled back into a planting pit according to the size of a container seedling and the length of the stalk of a bamboo seedling; during planting, slightly holding the container to peel off a seedling culture bag and then leaning the seedling towards the lower right corner along the center of the plant fixing pit by paralleling nodalbuds on the seedling stalk with the bottom surface of the pit and exposing topmost 1-2 sections of the seedling stalk out of the port of the pit; stuffing up theperiphery of the root of the seedling by using moist fine soil in the pit and then covering subsoil beside the pit on the seedling stalk and pressing the subsoil; shoveling peripheral surface fertilesoil when backfill soil is not enough, wherein the covered soil is slightly higher than the port of the pit to achieve higher outside and lower inside; and (7) checking and complementarily planting.

The invention discloses a spray type microbial fertilizer. The spray type microbial fertilizer comprises boric acid, potassium carbonate, ammonium molybdate, citric acid, trace elements and a composite microbial inoculant. The spray type microbial fertilizer can substitute chemical fertilizers in the agricultural production, increases the foliar photosynthetic intensity of crops, increases the chlorophyll component, increases the stress resistance of the crops, inhibits the growth of harmful bacteria, and reduces diseases and pests.

The invention relates to the plant dormancy adjustment and control technical field, and discloses a dormancy agent for transplanting trees; each 1 L of the dormancy agent for transplanting the trees comprises the following components: 0.1-0.5 g of a polyamine biosynthetic inhibitor, 0.15-0.2 g of calcium chloride, 0.01-0.1 g of catechol, 0.01-0.05 g of coumaric acid, 0.005-0.01 g of salicylic acid, 0.008-0.05 g of abscisic acid, 6-8 ml of Tween 20, and the balance water. The invention also discloses a preparation method of the dormancy agent for transplanting the trees. The trees are subjected to dormancy induction before the trees are transplanted, seasonal restriction and technical barriers of tree full-year transplanting are overcome, and the transplanting survival rate of the trees is increased. The cost is low, the consumption is little, the trees restore quickly, the transplanting security coefficient is high, and the landscape effect is easy to form.

The invention belongs to the field of crop production and discloses a seasonal drought relieving and high yield ensuring compound agent for double cropping rice. The compound agent includes an early-season rice special type and a later-season rice special type. The early-season rice special type includes, by weight, 50% of hydroxyethylcellulose, 20% of amino acid raw powder, 15% of monopotassium phosphate, 10% of potassium fulvate, 2.5% of zinc sulfate, 2% of prohexadione calcium, 0.2% of compound sodium nitrophenolate, and 0.05% of abscisic acid; and the later-season rice special type includes, by weight, 30% of hydroxyethylcellulose, 30% of amino acid raw powder, 20% of potassium fulvate, 10% of monopotassium phosphate, 5% of Kang polyphenol, 4.8% of zinc sulfate, and 0.2% of sodium alpha-naphthylacetate. In the formula, comprehensive drought resistant capability of rice is improved through several ways. The compound agent is quick in effects, has long lasting time and has good effects.

The invention belongs to the technical field of fertilizer, and especially relates to an apple special-purpose fruit wood charcoal base fertilizer. The apple special-purpose fruit wood charcoal base fertilizer is prepared from fruit wood charcoal containing 20 to 40% of carbon. Effective contents of N, P, and K account for 10 to 20%, 10 to 20%, and 10 to 20% of the mass amount of fruit wood charcoal respectively. A preparation method comprises following steps: fruit wood charcoal is smashed into powder; fertilizers containing N, P, and K are added, and bentonite and a binder are added for uniform mixing; pelletizing is carried out; and sieving is carried out. The apple special-purpose fruit wood charcoal base fertilizer is capable of increasing leaf quality of Fuji apple trees obviously, increasing leaf chlorophyll content, improving leaf photosynthetic performance, inhibiting spring twig excessive growth of Fuji apple trees, increasing fruit weight and large fruit proportion of Fuji apple, increasing soluble solid content and vitamin C content of Fuji apple, reducing titratable acidity, increasing fruit sugar-acid ratio, increasing fragrance kinds and amount of Fuji apple, and improving flavour of Fuji apple.

The invention discloses an environment-friendly soil conditioner and a preparation method thereof. The environment-friendly soil conditioner is prepared from the following raw materials: 1-5 parts of kaolinite, 1-5 parts of vermiculite, 1-5 parts of bentonite, 1-5 parts of zeolite, 0.5-1 part of hydromica, 10-20 parts of urban domestic sludge and 1000-2000 parts of effluent of urban domestic sludge treatment plant. The preparation method comprises the following steps: uniformly mixing the kaolinite, vermiculite, bentonite, zeolite and hydromica, putting the mixture into a permeable container made of a metal filtering net, soaking in the effluent of urban domestic sludge treatment plant for 7 days, taking out and airing the mixture; and then mixing with the urban domestic sludge, thereby obtaining the product. The soil conditioner can be used for improving the physical and chemical properties of soil, providing nutrient elements needed by plant growth, promoting plant growth, improving the plant biomass and enhancing the stress resistance of plants. Meanwhile, the soil conditioner can be used for effectively reducing plant transpiration and improving the photosynthesis of plants and is suitable for afforestation in arid regions, and the survival rate and preserving rate of forest plantation can be improved.

The invention discloses a preparation method of a plant growth regulator N,N-diethylaminoethyl caprylate. The preparation method comprises the following steps: 1, preparing N,N-diethylaminoethyl caprylate hydrochloride by using a reaction chemical formula shown in the specification; 2, carrying out alkali neutralization and extraction to obtain N,N-diethylaminoethyl caprylate; and 3, preparing N,N-diethylaminoethyl caprylate citrate by using a solvent method or a solvent-free method. During use, the N,N-diethylaminoethyl caprylate hydrochloride and the N,N-diethylaminoethyl caprylate citrate can be used for spraying, irrigating and spraying agricultural products, commercial crops and fruits. The N, N-diethylaminoethyl caprylate salt is prepared through a reaction at a low temperature, andthe raw materials are easy to obtain and low in price, so the synthesis method is simple and safe, and the yield is high; in the salifying process, the use of a solvent is reduced, so the cost is saved; and the reaction time is short, so the efficiency is high, energy is saved, and the method is suitable for industrial production.

The invention relates to a manglietia aromatica dandy nutritional type transpiration retardant and a preparation method thereof, and belongs to the technical field of environments and ecology of agriculture and forestry. The transpiration retardant is prepared from 0.1-0.3 g of fulvic acid, 0.1-0.3 g of citric acid, 0.4-0.7 g of potassium nitrate, 0.1-0.3 g of magnesium sulfate, 0.1-0.4 g of boracic acid, 0.1-0.4 g of manganese sulfate, 0.1-0.5 g of alginic acid and 0.1-0.3 g of tridecanol which are contained in 1 L of distilled water. The preparation method comprises the steps that the components are dissolved in the distilled water respectively, the prepared solutions are mixed to be uniform, the scale volume is added to 1 L, the mixture is evenly stirred to be uniform, the PH value and the EC value are regulated, and the manglietia aromatica dandy nutritional type transpiration retardant is obtained. According to the manglietia aromatica dandy nutritional type transpiration retardant, the survival rate of manglietia aromatica dandy transplanting is increased, and meanwhile nutrient elements can further be supplied to the manglietia aromatica dandy for rapid recovery after transplanting is conducted.

The invention discloses a freeze resistant sand fixing agent, and belongs to the technical field of sand fixing. A prepared water absorbing additive can improve the swelling performance and swelling dynamics of a composite material; absorbed water is stored in the channels, introduced carboxyl groups have a hydrophilic property, water contacting performance is enhanced, the water absorbing and water retaining performance of the sand fixing agent are improved; a microbial additive absorbs Ca<2+> from a surrounding sandy environment, then Ca<2+> combines with carbonate ions to generate mineral precipitates, as the stacking of the minerals, the density of the sandy layer is increased, the permeability is reduced, the absorbed water is sealed and stored, the cementing of sand is promoted, thesand is continuously fixed and protected; a freeze resistant additive can effectively reduce the size of pores, the transpiration rate is reduced, the water utilization rate is increased, water loss is reduced, water can be absorbed and utilized by plants, and the sand quality can be adjusted. The problems that in the prior art, the freeze resistant performance of a conventional sand fixing agentis bad and the sand fixing efficiency is bad are solved.

The invention discloses a preparation method of a plant growth regulator N,N-diethylaminoethyl butyrate. The preparation method comprises the following steps: 1, preparing N,N-diethylaminoethyl butyrate hydrochloride according to a reaction principle shown in the description; 2, carrying out alkali neutralization and extraction to obtain N,N-diethylaminoethyl butyrate; and 3, preparing N,N-diethylaminoethyl butyrate citrate by using a solvent method or a solvent-free method. The intermediate N,N-diethylaminoethyl butyrate hydrochloride and the finally obtained N,N-diethylaminoethyl butyrate citrate can be used as plant growth regulators to be applied, and specifically, the intermediate N,N-diethylaminoethyl butyrate hydrochloride and the finally obtained N,N-diethylaminoethyl butyrate citrate are sprayed or irrigated to crops, commercial crops and fruit plants. The N,N-diethylaminoethyl butyrate is prepared through a low-temperature normal-pressure reaction, and the raw materials are easy to obtain and are low in price, so the preparation method is simple, convenient and feasible; and the using method is simple, and the N,N-diethylaminoethyl butyrate can be compounded with multiplecomponents according to different purposes, so the application field of the N,N-diethylaminoethyl butyrate is expanded, efficiency is high, and cost is low.

The invention belongs to a humic-acid-containing water-soluble fertilizer capable of enhancing the stress resistance of crops and a preparation method thereof. The fertilizer is prepared from the following raw materials in parts by weight: 10-12 parts of urea, 6-8 parts of ammonium sulfate, 64-65 parts of potassium nitrate, 11-15 parts of potassium tripolyphosphate, 5-8 parts of humic acid, 0.5-1.5 parts of EDTA (ethylene diamine tetraacetic acid) chelated zinc, 0.4-1 part of amino acid chelated boron, 0.3-0.6 part of EDTA (ethylene diamine tetraacetic acid) chelated manganese and 0.3-0.6 partof polyglutamic acid. The fertilizerand the preparation method thereof have the advantages that the content of proline and the content of abscisic acid in the crops can be increased in an adverse environment (low temperature), the activity of polyphenol oxidase is enhanced, and the decrease degree of the transpiration rate of plants after low temperature stress, the stomatal conductance and the net photosynthetic rate are weakened so as to improve the cold resistance.

The invention relates to a preparation method of a non-toxic degradable transpiration inhibiter, and belongs to the technical field of a transpiration inhibiter. According to the method, substances such as soybean meal and sodium chloride are used as raw materials; a sterilization enrichment culture medium is prepared; bacillus coagulans are inoculated onto the sterilization enrichment culture medium for culture; through filtration, enriched strain liquid is obtained; then, the enriched strain liquid is inoculated onto a self-made sterilization culture medium; heating is performed; culture medium surface layer films are collected; drying is performed; grinding and sieving are performed to obtain fermentation film powder; finally, the fermentation film powder is subjected to homogenizing treatment with substances such as deionized water and monopotassium phosphate; the non-toxic degradable transpiration inhibiter can be obtained. The non-toxic degradable transpiration inhibiter prepared by the preparation method has the advantages that the plant transpiration speed can be effectively reduced; no toxic substances are contained; the harm to the environment and the human body health cannot be caused; the degradation is easy; the durable pollution cannot be caused; wide application prospects are realized.

The invention provides an active enzyme model compound, and a foliage fertilizer and a synergist based on the same, and a using method of the synergist, and belongs to the field of biochemistry. According to the active enzyme model compound, an active center is formed through coupling of organic ligands and metal ions, then a stress resistance mechanism of crops themselves is started through a variety of reaction mechanisms, and the active enzyme model compound can be used in different grow periods of the crops to achieve pest resistance, sterilization, waterlogging resistance, drought resistance and cold resistance of the crops and increasing of both production and income. When the active enzyme model compound is used for resisting the insect pest disaster, the use concentration of the active enzyme model compound reaches 500-1000 ppm, and no obvious side effects are showed on plants.

The invention discloses a seaweed polysaccharide anti-transpiration paste leaf fertilizer additive specially used for a pear tree. The additive is prepared from the following raw materials in parts by weight: 0.8-1 part of surfactin, 6-7 parts of cytokinin, 31-34 parts of methanol, 1.2-1.3 parts of pesticide emulsifier 602, 0.3-0.31 part of anhydrous calcium chloride, 0.139-0.14 part of anhydrous magnesium chloride, a right amount of deionized water, 0.15-0.18 part of isopropanol, 3-4 parts of hydroxyethyl methyl cellulose, 3-4 parts of seaweed polysaccharide, 4-5 parts of biochemical fulvic acid, 1-2 parts of ammonium molybdate, 3-4 parts of bentonite, 0.8-1 part of sodium lauryl sulfate, 29-32 parts of urea, 15-17 parts of potassium humate, 9-11 parts of dipotassium hydrogen phosphate, a right amount of ammonium sulfate and 2-3 parts of white sugar. When the paste leaf fertilizer prepared from the additive disclosed by the invention is used for spraying pear leaves, the yield of the pear tree can be improved, and occurrence of plant diseases and insect pests can be reduced.

The invention discloses a greenhouse for an agricultural seedling raising room, which comprises a greenhouse body and two groups of air circulating mechanisms for circulating air in the greenhouse body, the two groups of air circulating mechanisms are respectively mounted on the inner wall, close to outlets on two sides, of the greenhouse body and are positioned at diagonal positions of the greenhouse body, the exhaust directions of the two groups of air circulating mechanisms are opposite, each air circulating mechanism comprises an installation plate, the installation plates are fixed to the inner wall of the greenhouse body, swing rods are rotationally installed at the tops of the installation plates through hinge bases, and a fan is installed at the end, close to the other installation plate, of each swing rod. Through cooperation of the structures, air in the greenhouse body is driven by the air circulating mechanisms to circularly flow, so that cold and hot air flows in the greenhouse body can be exchanged and mixed, the temperature difference in the greenhouse body can be reduced, and the effect of regulating and controlling the temperature in the greenhouse body is achieved.

The invention relates to an environment-friendly north indoor wall greening matrix. The raw materials of the environment-friendly north indoor wall greening matrix comprise city life sludge compost, vermiculite and haycite. According to the matrix, city life sludge is used for replacing turf, economic and environmental protection value is achieved, nutrient elements needed by plant growth can be provided, plant growth can be promoted, the plant biomass can be increased, and the stress resistance of plants can be enhanced. Compared with control peat, by means of the matrix, the plant height can be effectively increased, the plant chlorophyll content can be increased, the photosynthesis of the plants can be enhanced, the transpiration of the plants can be reduced, high moisture and fertilizer preservation capacity is achieved, and the matrix is especially suitable for the dry weather condition of the north and the indoor dark environment.

Isolated NCED3 nucleic acids and polypeptides are described herein, together with methods for using such nucleic acids and polypeptides for making transgenic plants with improved drought tolerance.

The invention belongs to the technical field of preparation of fertilizers, and discloses a novel selenium-rich peanut fertilizer additive and a preparation method thereof. The preparation method comprises the following steps: weighing components of the novel selenium-rich peanut fertilizer additive with an electronic scale; evenly stirring through a stirrer to obtain a mixture; implementing thermal cracking and carbonizing with a heater, cooling, and grinding; sieving grinded peanut shells with a sieve to obtain biomass charcoal; treating the biomass charcoal through a hydrochloric acid solution and irradiation to obtain a mixed modified material; mixing to obtain a compound insecticide solution; and evenly mixing the mixture with the mixed modified powder, the compound insecticide solution and the other raw materials. A fertilizer provided by the invention is good in fertilizer efficiency and is strongly targeted, nutrients are rapidly absorbed, the defect of insufficient nutrient absorption of a root part is overcome, the fertilizing method is simple and feasible, the economic benefits are remarkable; sodium selenite instead of sodium selenate is applied in the selenium-rich fertilizer, so that a health threat of the fertilizer to a producer and a consumer is avoided.

The invention relates to a plant stress-resistant phosphogypsum saline-alkali soil conditioner and application. The saline-alkali soil conditioner is composed of phosphogypsum, a molar salt, an enzyme-mimetic chelate combination and a solvent, wherein the enzyme-mimetic chelate combination comprises an enzyme-mimetic chelate and a solvent, the central metal ions of the enzyme-mimetic chelate are Fe, Cu, Mn and / or Zn, and the ligand is a compound of N, N, N', N'-tetra (methylbenzimidazole) ethylenediamine. According to the invention, the plant stress-resistant phosphogypsum saline-alkali soil conditioner has the characteristics of regulating the pH value of soil, reducing the bulk density of the soil and reducing the alkalization degree of the soil, and also endogenously induces a stress resistance mechanism of plants in severe environments such as salt stress, drought, large evaporation capacity, large temperature difference and the like, so that the survival rate and the planting efficiency are improved, and the planting labor intensity after sand type saline-alkali improvement is reduced; and the raw materials are not limited by geographical conditions, the application way and range of phosphogypsum as the soil conditioner are deepened and widened, and the the plant stress-resistant phosphogypsum saline-alkali soil conditioner has good social and economic benefits and outstanding ecological benefits.

The invention discloses a plant growth regulator for enhancing drought resistance of rice and a preparation method and application thereof. The preparation method comprises the steps of mixing a pesticide active compound spermine, natural brassinolide and malic acid according to a certain proportion, and a certain amount of auxiliary filler is added. The concentration of spermine ranges from 100 mg / L to 300 mg / L, the concentration of natural brassinolide ranges from 0.2 mg / L to 0.4 mg / L, and the concentration of malic acid ranges from 100 mg / L to 300 mg / L. The plant growth regulator is used for resisting to drought damage caused by the high temperature or water shortage, after the plant growth regulator is sprayed, stomatal conductance of leaves is reduced, and water consumption due to transpiration is lowered; the chlorophyll content is increased, and photosynthesis assimilation substance accumulation is increased; root activity is enhanced, water absorption capacity and water retention capacity of plants are enhanced, the effects of stabilizing the yield and increasing the yield are achieved, and the plant growth regulator and the preparation method and application thereof provide a new rice plantation technology for alleviating damage of rice regions which are prone to drought damage in China.

The invention discloses a method for improving the yield and the quality of Thompson seedless grapes in the Turpan. AL2O3-2SiO2 compound solution with the concentration of 4% is prepared by using running water as solvent according to the mass percent; water is sprayed on surfaces of leaves and fruits of the Thompson seedless grapes in mid-days of sunny days in the germination period, the florescence period and the fruit enlargement period; influence of the AL2O3-2SiO2 compound on the growth of young sprout, leaf parameters, photosynthetic parameters, the yield and the quality on the Thompson seedless grapes is proved; the AL2O3-2SiO2 compound certainly has an obvious promotion effect on the growth, the yield and the quality of the Thompson seedless grapes in the Turpan; the problem that the yield and the quality of the Thompson seedless grapes in the Turpan are reduced due to over high air temperature, over high illumination and low relative air humidity is solved; the yield and the quality of the Thompson seedless grapes in the Turpan are obviously improved; the yield is improved by 44.14%; and the method has perfect application value.

The invention discloses a method for hardening butterfly orchid bottle seedlings, which is used for hardening the butterfly orchid bottle seedlings by controlling temperature, light, and humidity, andspecifically includes the following steps of transferring the bottle seedlings cultivated in a cultivation room to a greenhouse, and controlling the temperature of the greenhouse to be 26 to 28 DEG C, the humidity to be 55 to 62%, the light to be 4,000 to 5,000 Lx in a first week and the light to be 8,000 to 10,000 Lx after one week. Through the simultaneous control of temperature, light and humidity, the seedlings have a process of adapting to the external environment before being planted, so that the physiological state thereof transitions from a heterotrophic state in the cultivation roomto an autotrophic state in the greenhouse, thereby improving the survival rate.

The invention discloses application of DT1 proteins to regulating the stomatal density of plants and improving the drought resistance thereof, and provides a method for cultivating transgenic plants. The method for cultivating the transgenic plants includes a step of transferring DT1 protein encoding genes into starting plants to obtain the transgenic plants with the drought resistance higher than the drought resistance of the starting plants. The DT1 proteins are proteins (a) or (b); the proteins (a) comprise amino acid sequences shown as sequences 1 in sequence tables; the amino acid sequences shown as the sequences 1 are subjected to substitution and / or deletion and / or addition by the aid of an amino acid residue or a plurality of amino acid residues, so that the proteins (b) can be derived from the sequences 1 and are related to the drought resistance of the plants. The application has the advantages that as discovered by the inventor, the stomatal density of leaf epidermis can be effectively reduced if the expression level of DT1 genes is improved in Arabidopsis thaliana, accordingly, the transpiration rates of the transgenic plants can be reduced, and the drought resistance of the plants can be improved; important effects can be realized for controlling the stomatal density of leaves of the plants and improving the drought resistance of the plants.

The invention relates to the technical field of soil treatment, and discloses a method for reducing the content of cadmium and nickel in rice. The method comprises the following steps: (1) spreading a heavy metal composite conditioner in cadmium and nickel polluted soil, uniformly mixing the heavy metal composite conditioner with the soil, spreading a basic fertilizer, and then transplanting or spreading rice, wherein the heavy metal composite conditioner is porous biomass charcoal particles loaded with calcium magnesium phosphate fertilizer and calcium oxide; (2) spraying a foliar control agent from the tillering stage to the flowering stage of the rice; and (3) conducting watering and supplementing fertilizer according to the water and fertilizer conditions of the soil, and planting rice according to a conventional method. The organic-inorganic composite heavy metal composite conditioner is combined with the foliar control agent, so that the content of cadmium and nickel in the rice can be remarkably reduced, and the yield of the rice can be increased.

The invention provides a high-calcium-brackish-water and fresh-water root-divided alternative irrigation method. The root-divided alternative irrigation method includes the step of salt isolating layer laying, wherein a salt isolating layer comprises a rubble layer, a fine bamboo spar layer, a fine stone layer and a mixed soil layer. The salt isolating layer is laid in a planting region, and the distance between the upper surface of the salt isolating layer and the ground surface is 80 cm to 100 cm, the rubble layer is prepared from zeolite, ceramsite and grait, the fine stone layer is prepared from phosphate rock powder, fermented saw dust and wheat bran, and the mixed soil layer is prepared from Kanuma soil and humus. The invention further provides an application of the high-calcium-brackish-water and fresh-water root-divided alternative irrigation method to planting of cedars in saline and alkaline land. By means of the root-divided alternative irrigation method, the growing speed of plants is increased, the medical value of plants is increased, and the unnecessary transpiration of plants is greatly reduced.