31 results about "Root shoot ratio" patented technology

The invention relates to a cold-resistant corn seed coating agent, which comprises the following components in parts by weight: 0.5-5 parts of dimethyl sulfoxide, 0.05-1 part of proline, 6 parts of 70% imidacloprid water dispersible granules, 2 parts of Arabic gum and 81.28-90.68 parts of water. The cold-resistant corn seed coating agent provided by the invention can form an active material warehouse around corn seeds, mainly used in the time period that corn seeds are sown for about one month, has the effect of cold resistance, and promotes seed germination; the germination rate and germination potential of corn seeds treated through the cold-resistant corn seed coating agent are increased, seedling dry weight is increased, the root growth in the corn seedling stage is promoted, roots are enabled to be increased and thick, the root shoot ratio and the seedling height are increased, the cold resistance of the corn seeds is improved, the corn seeds can resist cold damage, sown in the soil with moisture, can be sown early, and sprout early, the photosynthesis during the corn growth period is increased and the purposes of high yield and stable yield are achieved.

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 microorganism nitrogen-fixing bacteria. The microorganism nitrogen-fixing bacteria is classified and named as microbacterium trichothecenolyticum SPJ01, and is conversed in China Center for Type Culture Collection, the culture conversation number is CCTCC NO:M2016254, and the conservation date is May 6 th, 2016; the application of the microorganism nitrogen-fixing bacteriain soil provides nitrogen elements and phosphorous elements for crops, and relieves the inhibition of growth due to nitrogen deficiency and phosphorous deficiency; the microorganism nitrogen-fixing bacteria serves as a nitrogen-fixing growth-promoting microbial agent in a desert area. The growth inhibition of the crops under the condition of nitrogen deficiency and phosphorous deficiency can be relieved; meanwhile, the crops have an obvious promoting effect on the growth of crop seedlings, and various growth indexes of two kinds of forage like the plant height, the root length, the single leafarea, the single plant leaf number, the root size, the plant size, the overground fresh dry weight, the underground fresh dry weight, the plant fresh dry weight, the root shoot ratio (R / T) and the dry fresh weight (D / F) are all obviously improved.

The invention discloses a water-saving and high-yield cultivation method for dry land wheat, and relates to cultivation methods of crops. The water-saving and high-yield cultivation method for the dry land wheat comprises the following steps of fertilizing, farming, variety selecting, flat planting, group controlling and intertillage weeding and suspension of soil conservaton drought-resisting. According to the water-saving and high-yield cultivation method for the dry land wheat, downward tying probability of a root before winter is increased through early deep applying of fertilizer, root shoot ratio is increased so as to enable a root system to sufficiently absorb moisture and nutrient of soil at a deep layer, even-row flat planting is adopted to increase the dry land wheat group, strong seedlings are bred, and a reasonable group management strategy is adopted to increase the dry land wheat yield through synchronous improvement of grain number and thousand seed weight on the foundation of a large group. Risk of dressing waiting for rain in the late growth stage of wheat is reduced, and effort and labor are reduced.

The invention provides a biological seed coating agent for controlling soybean phytophthora root rot, a preparing method thereof and a using method of the seed coating agent and belongs to the technical field of agricultural biotechnology. The seed coating agent comprises 20% by mass of streptomyces dorenlacusensis M1-4 inoculum, 10% by mass of a plant activator, 5% by mass of a biological conditioning agent, 10% by mass of a nutrition element solution and 10% by mass of an auxiliary agent, with the balance being water. The preparing method includes adding 1% of carboxymethylcellulose sodium and 10% of polyvinyl alcohol into water, heating to 80 DEG C, stirring for 20 min until film forming agents are fully dissolved, cooling to room temperature, adding 0.4% of rhodamine, 3% of glycerol and 0.5% of peregal O-25, and adding 20% of the actinomycete streptomyces M1-4 inoculum, 5% of the biological conditioning agent, 10% of the nutrition element solution, 10% of the plant activator and the water into the auxiliary agent according to mass percentages of components in the seed coating agent. The seed coating agent significantly inhibits soybean diseases and pests, can increase the root shoot ratio, can increase soybean stress resistance and can increase soybean quality and yields.

The invention discloses a lightweight medium for promoting growth of keteleeria cyclolepis seedlings. The preparing process of the lightweight medium includes the steps that firstly, a basic substrate is prepared; according to the volume ratio, 35%-40% of humic topsoil, 40%-45% of mature coco coir, 5%-10% of mushroom residues and 10%-15% of perlite are mixed and stirred evenly, drenching and disinfection are conducted through a potassium permanganate solution with the concentration being 0.5%, and the mixture is spread after 24 hours and aired for 5 days to 7 days; secondly, functional bacteria compounding is conducted; a composite microbial agent and the basic substrate are mixed according to the mass ratio of 1:1000, stacking is conducted after a small amount of water is poured, stacking body overturning is conducted once after the temperature in a stacking body reaches 40 DEG C to 45 DEG C and is maintained for 10 days, and then the lightweight medium is obtained after fermentation is conducted for 10 days. The lightweight medium is good in physical behavior and nutrient performance, nutrients of the substrate are utilized more efficiently through the compounded functional bacteria, the lightweight medium is low in carbon and environmentally friendly, and the cost is saved. According to the keteleeria cyclolepis container seedlings cultured through the lightweight medium, the survival rate of nursery stocks reaches over 93.5%, the total biomass of the nursery stocks is increased by over 33.0%, the root shoot ratio is adjusted, the number of lateral roots is increased, the nursery stocks are robust, terminal buds are full, the woodiness level is high, and the quality of the nursery stocks is improved remarkably when outplanting is conducted.

The invention discloses a high-yield, high-efficiency and simple cultivation method for dryland wheat. In order to meet the planting requirements of dryland wheat, in the process of planting dryland wheat, excellent wheat products with drought resistance and barren resistance are selected, a field cultivation and management system for storing water and preserving moisture is established, soil fertility is improved, reasonable fertilization, sowing with adequate moisture at an appropriate time, field management and corresponding prevention and control measures are adopted according to differentplant diseases and insect pests characteristics, so that the planting yield of dryland wheat can be effectively improved, the planting benefit can be improved, and the development of the wheat industry can be promoted; the early and deep fertilization of fertilizers is used to increase the root penetration before spring and winter, increase the root-shoot ratio, enable the root to fully absorb the water and nutrients in deep soil; and a reasonable group management strategy is adopted, and the grain number per spike and 1000-grain weight on the basis of large groups are synchronously increasedto increase the yield of dryland wheat, and thus not only the risk of rain topdressing at the later growth stage of wheat is reduced, but also cost and labor are saved, so that the method is efficient and simple.

The invention provides an application of progesterone as a drought-resistant agent for crops and a method for improving drought resistance of the crops. Research of a laboratory experiment, a pot experiment and a field experiment of the crops with three different volumes and in different environments shows that progesterone can affect wheat phenotype, malondialdehyde content in wheat, hydrogen peroxide content and activity of superoxide dismutase, catalase and peroxidase under the drought condition, can also affect net photosynthetic rate, stomatal conductance and fluorescence parameters of the wheat and can affect level of abscisic acid and cytokinin in the wheat and a root-shoot ratio of the wheat, thereby affecting the yield of the wheat finally. The application range of progesterone iswidened, and progesterone is not limited to medication of a human body and is applied to drought resistance and yield increase of the crops.

The invention discloses a method for testing applicability of plants to a karst environment. The method is characterized by comprising the following steps: adding or reducing chemical substances froma Hogland nutrient liquid, and simulating karst adverse factors indoor, wherein plant seedlings cultured by using the Hogland nutrient liquid are adopted for reference treatment; respectively testingnet photosynthetic rates, PSII (Plasma Source Ion Implantation) maximum photochemical efficiency and root shoot ratio indexes of tested plants on the tenth day and the twentieth day; respectively comparing the net photosynthetic rates, the PSII maximum photochemical efficiency and the root shoot ratio indexes acquired from reverse factor culture plants with those of the reference, normalizing theindexes, and respectively calculating the degradation amplitudes a, b and c of the net photosynthetic rates, the PSII maximum photochemical efficiency and the root shoot ratio indexes of the plants under reverse factors; according to the degradation amplitudes a, b and c of the net photosynthetic rates, the PSII maximum photochemical efficiency and the root shoot ratio indexes of the plants underthe reverse factors, judging and observing applicability of the plants to reverse environments.

The invention discloses a diagnosis method for forest nutrient balance, which is characterized in that, forest nutrient balance is determined by judging the root-shoot ratio R / S of the forest; when R / S is equal to a reference value, the forest has nutrient balance; when R / S is larger than the reference value, the forest has nutrition deficiency; when R / S is smaller than the reference value, the forest has nutrient excess; the root-shoot ratio R / S can also be described by an allometric model y=axk to be: lnS=a+klnR, when k<1, the forest has nutrition deficiency; when k>1, the forest has nutrient excess; when k=1, the forest has nutrient balance. The diagnosis method is formed from the relation angle of the adaptive mechanism of the forest to nutrition stress and the distribution pattern of Chinese fir seedling photosynthate. The diagnosis method has an advantage that the state of forest nutrient balance can be judged accurately.

The invention relates to a method for stimulating quick growth of centipedegrass by preprocessing stolons through low-temperature plasmas. The method includes the following steps that 1, the centipedegrass stolons are soaked in clean water at the temperature of 30-35 DEG C for 18 hours; 2, the dielectric barrier helium low-temperature plasmas are used for processing the stolons under the processing conditions that the processing intensity is 150-450 W, the processing time is 10-20 s, the polar plate spacing is 2 cm, the pressure intensity is 150 Pa, and the frequency is 13.56 kHz; 3, the processed stolons are soaked in clean water at the temperature of 30 DEG C for 18-24 hours; 4, the soaked stolons are planted in flowerpots to be cultivated. By processing the centipedegrass stolons with the low-temperature plasmas, the dry weight of underground parts, the root shoot ratio, the total root length, the root volume, the root specific surface area and the average root diameter of the centipedegrass stolons can be increased by 12-41%, 8-20%, 18-33%, 30-62%, 33-64%, 20-61%, 7-22% and 21-36% respectively. The new method is easy and convenient to operate, low in cost and free of pollution,takes effect quickly, can effectively promote the growth of the underground parts and overground parts of the centipedegrass stolons.

The invention relates to a method for reducing a rotting disease of roots of pseudo-ginseng, and belongs to the technical field of Chinese herb planting. In land formation, before land plowing, base fertilizer and lime are uniformly scattered into soil in a field, and a plough is used for deep tillage one time; in ridging, common ridging is conducted; planting and managing are conducted, wherein pseudo-ginseng seedlings are transplanted into ridges, covering layers are laid, a sodium chloride solution with the concentration of 15-20 wt%o is sprayed at regular intervals, and then daily common field management is conducted until pseudo-ginseng is matured. In the method, the sodium chloride solution is sprayed to adjust the pH value of the soil, the disease rate of the rotting disease of theroots of the pseudo-ginseng is decreased, meanwhile, a salt stress environment is formed, the quantity of distributed biomasses at the roots of pseudo-ginseng is increased, the root shoot ratio of pseudo-ginseng is increased, the yield of pseudo-ginseng is increased, and meanwhile the amount of applied pesticide is decreased. The production cost for pseudo-ginseng is lowered, and the method is better applied to the field of Chinese herb planting.

The invention discloses a special water conservation type rhizosphere fertilizer for flue-cured tobacco seedlings. The fertilizer is prepared from, by mass, isobutylidene diurea, potassium magnesium phosphate, nitrate of potash, a potassium humate organic and inorganic water-retaining agent, sodium borate, zinc oxide, blue vitriol, ferrous sulfate, manganese sulfate, ammonium molybdate, limestoneflour, chitosan and a root growth promoting agent. The special water conservation type rhizosphere fertilizer is adopted to spray the seedlings at the outsides of flue-cured tobacco roots, one-time fertilizer applying is achieved on the flue-cured tobacco seedlings, compared with a traditional seeding growing mode, fertilizer applying of 2-3 times is reduced, and the fertilizer applying amount isreduced by 20-30%; the biomass of the grown flue-cured tobacco seedlings is increased by 15% or above, and the tobacco seedling root shoot ratio is improved by 20% or above; the total root lengths ofthe grown seedlings are improved by 150% or above, the common root area is increased by 30% or above, the stem diameter is increased by 20% or above, and the strong seedling index is improved by 30% or above. Therefore, the fertilizer has the effects of significantly reducing the fertilizer applying amount for the flue-cured tobacco seedlings and improving the agricultural labor productivity efficiency and the economic benefit, and has a wide market prospect.

The invention relates to a planting method of wild-imitating scutellaria baicalensis. The method comprises the following steps of land selection and preparation, base fertilizer application, seed selection, sowing at a proper period, reasonable close planting, weed removal, foliar topdressing, chemical bud removal and scientific harvesting. The method provides a series of cultivation measures for increasing yield of wild-imitating scutellaria baicalensis, such as selecting improved varieties and conducting seed treatment, keeps weeds in a seedling stage, and sprays selective herbicides when the weeds grow too vigorously and exceed scutellaria baicalensis seedlings to produce an inhibitory effect on growth of the scutellaria baicalensis. According to plant nutrition demand characteristics of scutellaria baicalensis in different growth periods, different water-soluble plant nutrient solutions are sprayed to leaf surfaces, a root shoot ratio is regulated and controlled, underground root growth is promoted, and plant stress resistance is improved. Particularly, timely selection of herbicides and foliar topdressing for foliar spraying of the different water-soluble plant nutrient solutions in different growth periods can be carried out by adopting an unmanned aerial vehicle, so that production efficiency can be greatly improved and production cost can be reduced. The method is particularly suitable for large-scale planting of the wild-imitating scutellaria baicalensis and has a wide application prospect.

The invention belongs to the technical field of agricultural cultivation, and particularly relates to a method of interplanting wheat and pumpkins. The method comprises the steps of wheat planting, pumpkin planting, interplanting and watering management and harvesting. Compared with the prior art, the method for interplanting the wheat and the pumpkins has the advantages that the pumpkins are interplanted among the wheat, water or angelica sinensis treatment liquid are irrigated in an appropriate period, so that water supplement can be conducted on the flowering and vine-stretching period of the pumpkins, and the quantity accumulation of dry matter of root systems and the portions above the ground is facilitated to make a root-shoot ratio reach 2% or above; meanwhile, through the cooperation of the grain-filling period of the wheat and the angelica sinensis treatment liquid, the yield of the interplanted wheat can be significantly increased; compared with the prior art, the irrigation amount under a high-yield condition is reduced by about 30%, the fluorescence parameters of leaves keeps at a relatively high level in the late growth period, and the conversion efficiency of light energy is improved; meanwhile, in cooperation with drought stress in the early period, the stress resistance capability of leaves can be significantly improved, and the uniformity of water saving and high yield can be achieved.

The invention provides a plant aeroponic culture control device and method. The Plant aeroponic culture control device comprises an atomization control box, an aeroponic culture box, image pickup equipment and a computer; the atomization control box is provided with a controller; the aeroponic culture box is connected with the atomization control box; the image pickup equipment is used for acquiring an image of a plant; the computer is respectively connected with the controller and the image pickup equipment; the computer is used for acquiring sectional areas and minimum enclosing rectangle parameters of a leaf crown and a root of a plant according to the image of the plant, acquired by the image pickup equipment, computing the sectional area ratio of the leaf crown to the root and the area ratio of minimum enclosing rectangles and sending a computed result to the controller; and the mist delivery quantity of the atomization control box is controlled by the controller. The plant aeroponic culture atomization control based on a root shoot ratio is particularly suitable for aeroponic culture atomization control leaf vegetables, not only can the traditional aeroponic culture operationbe finished, but also a corresponding regulation strategy can be computed according to the growth condition of the vegetables, the condition that the leaf vegetables are excessively developed in roots and slightly few in leaves in an aeroponic culture process is solved, and the problem of growth vigor of roots and crowns is controlled to a certain extent.

The invention discloses a plant growth regulator suitable for ryegrass. The plant growth regulator is composed of uniconazole and an auxin plant growth regulator having a mass ratio of 2-8:6-10. The invention also provides a method for treating seeds of the ryegrass. The method includes the following steps: the seeds of the ryegrass are soaked with a solution containing a plant growth regulator composition; and in the solution containing the plant growth regulator composition, the concentration of the uniconazole is 20 mg / L-80 mg / L, and the concentration of the auxin plant growth regulator is60-100 mg / L. when the seeds of the ryegrass are treated by utilizing the plant growth regulator provided by the invention, the rooting rate of the ryegrass can be significantly increased, and the interaction effect of the uniconazole and an naphthalene acetic acid on growth of seedlings of the ryegrass is significant, and the root-shoot ratio, the number of roots, the root length, the root weight,the number of leaves and the leaf weight of the ryegrass are significantly increased, while the plant height of the ryegrass significantly becomes low.

The invention relates to a water culture method for a potted plant. The water culture method for the potted plant is characterized by comprising the following steps: seedling cultivation, cleaning, domestication in the early stage, maintenance with clear water, planting, ultraviolet irradiation, root irrigation maintenance, rapid rooting and normal cultivation. A ceramic ball of a flowerpot of thepotted plant is soaked in irradiation protecting liquid, thus, the ceramic ball fully absorbs and stores the irradiation protecting liquid, and the irradiation protecting liquid is sprayed to a rootsystem of a planted seedling. The water culture method for the potted plant has the advantages that the reasonable dosage of UV-B is adopted to irradiate the potted plant, in combination with the corresponding root system protection and on the premise of not excessively affecting required root system ornamental value of a water culture plant, the potted plant has appearance modes of plant dwarfing, internode shortening and changing of root shoot ratio, and thus, the artistic expression style, which conforms to potted landscape, of the potted plant is obtained; and meanwhile, through strict multi-stage control and in combination with nutrition solutions in different formulas, rapid rooting of the plant is realized, and root rot and slow growth are avoided.

The invention relates to a method for supplementing selenium for tobacco in the seedling period. The method is characterized by comprising a step of adding a nitrogen-phosphorus-potassium fertilizer in a nursery pond according to the conventional seedling culture method, and also comprising the following operating steps of a) supplementing selenium for tobacco seedlings in the sowing period; and b) supplementing selenium for the tobacco seedlings in the cross-shaped period. According to the law of absorbing nitrogen, phosphorous, potassium and selenium by the tobacco seedlings, nutrients are reasonably matched, the quality of the tobacco seedlings is obviously improved, the dry weight of a root system and the root shoot ratio are obviously improved, the root activity and the photosynthetic capacity of leaves are enhanced, and the stress resistance is obviously improved. The selenium content of the overground part and the root system is increased by 8.3-21.7 times and 47.4-83.0 times respectively when the tobacco seedlings emerge, the selenium content of the tobacco is improved by 32.7-90.3 percent after the tobacco is ripe and is cured, the high-quality selenium-enriched tobacco is produced easily and conveniently and the method is suitable for promotion and application.

The invention belongs to the technical field of ixeris chinensis seedling breeding, and discloses a soilless culture substrate suitable for seedling breeding of ixeris chinensis and a preparation method of the soilless culture substrate. The soilless culture substrate suitable for seedling breeding of ixeris chinensis consists of peat, sawdust and river sand according to a volume ratio of 1:1:1. The seedling emergence rate of the seedlings bred by using the soilless culture substrate provided by the invention is 77.5%; the sound seedling index is 0.099; after 25 days from germination, the largest plant height is 8.36cm; after 25 days from sowing, the root length is 8.63cm; after 25 days from sowing, the stem thickness is 0.149 cm; and after 25 days from sowing, the root-shoot ratio is 0.66.

The invention relates to a method for increasing saline herbaceous plant organic carbon fixation in the arid desert region. The method includes that performing digging or drilling in plant growing areas of saline herbaceous hexinia chrysanthemum, ceratocarpus arenarius, agriophllum squarrosum or camel thorns when land surface temperature is sustained to be 20DEG C at the end of spring or herbaceous vegetation grows to 10cm; performing digging or drilling in growing season, and applying nitrate nitrogen to a dug belt or a drilled hole. Underground lateral roots of saline herbaceous plants are promoted to grow and develop by the application of nitrate nitrogen nutrition, and the plants are promoted to distribute more biomass generated through photosynthesis to the underground to promote increasing of root shoot ratio and underground root growth so as to achieve the purpose of increasing long-term storage of underground organic carbon of the plants to compensate decreasing of ecosystem carbon fixation capacity due to declining of the plants in the arid desert region.

The invention relates to a tobacco selenium-rich seedling culturing substrate and a using method thereof. The seedling culturing substrate is characterized in a tobacco selenium-rich seedling culturing substrate, which is prepared from the steps of: mixing peat, carbonized husks, perlite and activated selenium mineral powder according to a dry weight ratio of 1:1:0.5:(0.2-0.6); adding water to achieve a water content of 20-30%; and evenly mixing. The using method of the seedling culturing substrate is characterized by comprising the steps of: spraying water on the selenium-rich seedling culturing substrate and pouring the selenium-rich seedling culturing substrate on a floating seedling culturing disk to culture seedling bases. After the substrate produced by the formula is applied for supplementing selenium of tobacco leaves, the quality of the tobacco seedling is improved remarkably, both the dry weight of a root system and a root shoot ratio are enhanced considerably, the production cost of the selenium-rich tobacco leaves is lowered effectively and the utilization rate of the selenium resource is enhanced outstandingly.

The invention provides a under-membrane drip irrigation paddy dedicated root promoting agent composed of the following components in parts by mass: 1-3 parts of alpha-naphthylacetic acid and 4-7 parts of DA-6 or 1-2 parts of humic acid and 6-10 parts of DA-6. The invention also provides an application of the root promoting agent in under-membrane drip irrigation paddy. The root promoting agent has good root promoting effect on the under-membrane drip irrigation paddy, can effectively increase plant height, root length, stem weight, root weight, root number and root-shoot ratio of the under-membrane drip irrigation paddy in the seedling period, and is suitable for use in the under-membrane drip irrigation paddy.

The invention discloses a greenhouse tomato cultivation method based on a small-flow irrigation device. The method comprises the following steps of burying of a drip irrigation zone, arrangement of asoil pressure detection system, application of base fertilizer, ridging, field planting of seedlings, application of base fertilizer after field planting, irrigation and topdressing according to a monitoring result and greenhouse management. The irrigation method comprises the step that watering is conducted at nine stages according to the growth period of plants; the topdressing method comprisesthe steps that topdressing is controlled at different stages of the seedling stage, initial flowering stage and fruiting stage, wherein the initial flowering stage is divided into a bud appearance stage and a bud blooming stage, and the fruiting stage is divided into a fruit bearing stage, a fruit expansion stage and a fruit end stage. According to the greenhouse tomato cultivation method, growthof the root systems is stimulated at the tomato seedling stage, biomass accumulation of the root systems is increased, development of the root systems is promoted, the space effectiveness of soil nutrients is changed, the root shoot ratio of crops is increased, the crop yield and water and fertilizer utilization rate are increased, and the fruit quality is improved.

The invention provides an older-seedling cultivation device suitable for mechanical rice transplanting and application thereof and belongs to the technical field of agricultural cultivation. The older-seedling cultivation device comprises a seedling cultivation tray, a cultivation medium and seedling cultivation paper, wherein first seedling cultivation paper, the cultivation medium layer, first nutritional seedling cultivation paper and second seedling cultivation paper are sequentially arranged in the seedling cultivation tray. The older-seedling cultivation device has the advantages that according to the fact that when seedlings are 20 days old, the height of the seedlings is smaller than that of the control, the base stem width, leaf area, chlorophyll content and overground part and root system dry weight of the seedlings are evidently increased, and root shoot ratio and root system winding force and vigor are increased evidently, the device can evidently improve seedling quality;in addition, according to the fact that when the seedlings are 30 days old, the quality of the seedlings is evidently higher than that of the control, the height of the seedlings is evidently smallerthan that of the control, and the seedlings are still suitable for mechanical rice transplanting, the device can prolong the suitable planting period of the seedlings; meanwhile, the device can reducecultivation medium use amount, save cost for farmers and increase efficiency.

The invention discloses a method for analyzing influences of arbuscular mycorrhizal fungi on plant moisture utilization efficiency. The method comprises the following steps that after soil sterilization, the certain amount of arbuscular mycorrhizal fungi is exerted; target plants are transplanted or seeded; after the plants normally grow for a period of time, water supplying is stopped for seven days or above, all growth indexes start to be monitored, the growing situation, the root shoot ratio, the nutrient and the moisture utilization efficiency of the target plants are calculated, and dataare preserved into the .sav format through an SPSS according to the certain mode; and a structural equation model is built through AMOS software according to the relation between independent variablesand the relation between the independent variables and dependent variables, and reasons for the influences of arbuscular mycorrhizal fungus inoculation on the plant moisture utilization efficiency are explained according to the operation result of the structural equation model. The reasons for improving the plant moisture utilization efficiency can be explained well through a structural equationmodel analyzing method, and the obvious effects are brought to more effective improving of the plant moisture utilization efficiency by further taking manual adjusting and controlling measures duringvegetation recovery of arid regions.

The invention belongs to the technical field of seedling transplantation and particularly relates to a method for preventing needle leaves from falling off in a transplanting process of evergreen plants in high-altitude regions. The method comprises the following steps: step 1, erecting a shading net with preset light transmittance, and planting first evergreen plant seedlings in the shading net;step 2, adjusting the root-shoot ratio of the first evergreen plant seedlings through a trimming mode to obtain second evergreen plant seedlings; and step 3, alternately spraying an antitranspirant, foliage fertilizer and water mist to the second evergreen plant seedlings until the second evergreen plant seedlings are transplanted and survive. The method provided by the invention solves the technical defect that the needle leaves severely fall off after vegetations are transplanted by the existing vegetation transplanting method, and ensures the over-wintering problem of germinated or secondarily-germinated new leaves after the evergreen plants are transplanted, thereby indirectly improving the transplanting survival rate of the evergreen plants.

The invention relates to a cold-resistant corn seed coating agent, which comprises the following components in parts by weight: 0.5-5 parts of dimethyl sulfoxide, 0.05-1 part of proline, 6 parts of 70% imidacloprid water dispersible granules, 2 parts of Arabic gum and 81.28-90.68 parts of water. The cold-resistant corn seed coating agent provided by the invention can form an active material warehouse around corn seeds, mainly used in the time period that corn seeds are sown for about one month, has the effect of cold resistance, and promotes seed germination; the germination rate and germination potential of corn seeds treated through the cold-resistant corn seed coating agent are increased, seedling dry weight is increased, the root growth in the corn seedling stage is promoted, roots are enabled to be increased and thick, the root shoot ratio and the seedling height are increased, the cold resistance of the corn seeds is improved, the corn seeds can resist cold damage, sown in the soil with moisture, can be sown early, and sprout early, the photosynthesis during the corn growth period is increased and the purposes of high yield and stable yield are achieved.

The invention discloses a microbial nitrogen-fixing bacteria, which is classified and named as Microbacterium trichothecenolyticum SPJ01, which is preserved in the China Center for Type Culture Collection, and the strain preservation number is CCTCC NO: M2016254, and the preservation date is May 9, 2016; the The application of the microbial nitrogen-fixing bacteria to provide nitrogen and phosphorus to crops in soil can alleviate the growth inhibition caused by the lack of nitrogen and phosphorus; the application of the microbial nitrogen-fixing bacteria as a nitrogen-fixing and growth-promoting bacterial agent in desert areas. It can not only alleviate the growth inhibition of crops under nitrogen and phosphorus deficiency stress, but also significantly promote the growth of crop seedlings, so that the growth indicators of the two forage grasses such as plant height, root length, single leaf area, single leaf The number, root volume, plant volume, aboveground fresh dry weight, underground fresh dry weight, plant fresh dry weight, root shoot ratio (R / T) and dry to fresh weight ratio (D / F) were significantly increased.