23results about How to "Prevent excessive growth" patented technology

The invention discloses an NURBS curve robot trajectory offset point focusing fitting method based on adaptive optimization, which remarkably improves trajectory precision and calculation efficiency through adaptive optimization focused on an error offset point. The method comprises the steps of initial path planning, NURBS curve fitting, error evaluation and offset point extraction, adaptive optimization and real-time feedback adjustment. In error evaluation, double indexes of a root-mean-square error and a maximum absolute error are adopted, an offset point is accurately identified, a control point, a weight and a node vector are focused and optimized by using a genetic algorithm, and local optimum is effectively avoided. A regularization item is introduced into a fitness function, curve complexity and precision are balanced, and smoothness and feasibility of a track are achieved. And finally, real-time adjustment of the trajectory is realized through a multi-feedback mechanism, and the robustness of the robot in a dynamic environment is improved. Compared with the prior art, the precision, the real-time performance and the environmental adaptability of track generation are realized, and particularly, an efficient and accurate track fitting effect is achieved in a complex dynamic environment.

The invention discloses a high-compaction-density ferromanganese phosphate precursor and a preparation method thereof, and belongs to the technical field of lithium batteries, and the provided preparation method comprises the following steps: step 1, respectively dissolving a manganese source, an iron source and a phosphorus source in water to form solutions; 2, adding a complexing agent into the iron source solution to form a complexing iron salt solution; step 3, mixing the complexing ferric salt solution, the manganese source solution and the phosphorus source solution, adding an oxidizing agent and alkali liquor, keeping the pH value of the system to be 5.5-8, heating and stirring for reaction, and synchronously introducing oxygen for bubbling during reaction; and 4, after the reaction is finished, carrying out solid-liquid separation, and drying and roasting to obtain the ferromanganese phosphate precursor. According to the method, under the action of the complexing agent, the homogeneity of iron-manganese coprecipitation is improved, oxygen is introduced for bubbling in the reaction process, and excessive growth of crystals is inhibited while the oxidation condition is ensured, so that the ferromanganese phosphate precursor is proper in particle size and uniform in distribution, and the positive electrode material prepared from the precursor has high compaction density and excellent electrochemical performance.

The invention relates to an irrigation and fertilization method for high-efficiency production of cotton under a zero chemical regulation condition, which comprises the following steps: setting a plant water deficit index threshold value, and setting a water regulation coefficient according to the sensitive degree of cotton in each growth stage to water stress; optimally determining the total fertilization amount in the whole growth period of the cotton, and determining a nutrient regulation coefficient according to the sensitive degree of the cotton in each growth period to nutrient stress; continuously obtaining root zone soil moisture and salinity dynamic data, and evaluating a plant moisture deficit index; when the estimated value of the plant water deficit index threshold value is larger than the set threshold value, a valve is opened for irrigation, the irrigation quota is calculated, and staged pulse fertilizer injection or continuous variable fertilizer injection is adopted in the water and fertilizer integrated implementation process. According to the method, the water, fertilizer and salt environmental conditions of the soil are regulated in time through irrigation and fertilization, the growth process of the cotton is further regulated, especially the relation between vegetative growth and reproductive growth is optimized, excessive growth of the cotton is effectively prevented on the premise that growth regulators such as mepiquat chloride are not applied, and the aims of saving water and fertilizer, inhibiting salt, increasing yield and income and the like are achieved.

The invention relates to the technical field of evaporative crystallization, in particular to a potassium chloride solution evaporative crystallization device. Comprising an equipment frame; a bottom plate is fixedly mounted on the equipment frame, and an evaporation mechanism is arranged on the bottom plate; according to the evaporation mechanism disclosed by the invention, the separation part is used for stirring in the evaporation process of the potassium chloride solution so as to improve the precipitation efficiency of crystals, and meanwhile, the precipitated crystals can be filtered to the drying part in time, so that the crystals are effectively prevented from being excessively increased in the evaporation barrel, the flowability of the solution is kept, and the stirring and heating uniformity is also ensured; the problem that the mixing efficiency is reduced due to increase of the crystals is avoided, and the crystals in the drying part are heated and pre-dried through the suction part by utilizing steam heat generated by evaporating the potassium chloride solution, so that the utilization rate of energy is increased.

The invention discloses an industrialized seedling raising method for tissue culture seedlings of Eucalyptus robusta in autumn and winter in the Xiaoqing region, and relates to the technical field of plant seedling raising. The seedling culture method comprises the following steps: transplanting tissue culture seedlings of Eucalyptus robusta after seedling hardening into a completely infiltrated matrix section for culture, spraying a winter seedling culture compound foliar fertilizer during culture, and then putting container seedlings into a tray and putting the tray into a Eucalyptus robusta winter seedling culture shed for culture. Wherein the Eucalyptus robusta winter seedling raising shed sequentially comprises an elevated seedling raising system, a second-stage heat preservation shed and a third-stage heat preservation shed from inside to outside, a two-layer air cushion buffer structure can keep the temperature in the shed stable, the elevated seedling raising system comprises a seedbed, a water retention and root promotion layer and an inner heat preservation shed, and the water retention and root promotion layer is made of acrylic cotton. The invention also provides a formula of the compound foliar fertilizer for seedling raising in winter. The seedling raising method provided by the invention effectively solves the problems of excessive growth of stems of Eucalyptus robusta seedlings in winter, hibernation of tissue culture seedlings of Eucalyptus robusta and easy damping-off due to high humidity.

The invention discloses a forest tree large-scale seedling raising and fertilizing device, and relates to the technical field of forestry planting, the forest tree large-scale seedling raising and fertilizing device comprises an equipment main body connected with a tractor, and the tractor is provided with a monitoring device; the moving wheels are fixed at one end, connected with the tractor, of the equipment main body and correspond to wheels of the tractor in position; the two material storage cavities are symmetrically distributed and are fixed on the equipment main body; the fertilizer feeding device is fixed at the bottom of the material storage cavity; the fertilizing channel is fixed at the bottom of the fertilizer feeding device, and a fertilizing opening is formed in the bottom of the fertilizing channel; the cutting device is positioned below the fertilizer feeding device; the topdressing device is positioned below the cutting device; the ditching knife is fixed on one side of the fertilizing opening, which is the same as the running direction of the tractor; the flattening assembly is arranged at the end, opposite to the moving wheels, of the equipment body. On the premise of quantitative fertilization, fertilizer conveying is increased for weak seedlings so as to promote growth and development of the weak seedlings, and the fertilization amount is reduced for strong seedlings so as to avoid excessive growth caused by overgrowth.

The invention discloses a green and efficient taro cultivation method in the technical field of agricultural cultivation. The method comprises the following steps of 1, preparation before planting, wherein soil preparation and raking are conducted, and fertilizer is applied to furrows; 2, seed selection, germination acceleration and sowing; step 3, film covering and moisture preservation; 4, water and fertilizer integrated management, wherein a water and fertilizer integrated facility is installed; 5, plant type management, wherein redundant lateral branches are pulled out, and the leaf density of plants is adjusted; 6, disease and pest control: comprehensively controlling diseases and pests possibly encountered in the growth process of the taros; step 7, harvesting the taros. The method is easy to operate, the tea bran is applied to taro planting, rich nutrient substances of the tea bran can be used for providing nutrients needed by taro plant growth, investment of chemical fertilizer is reduced, tea saponin contained in the tea bran can inhibit activity of various pathogenic bacteria and prevent and control underground pests, and the taro planting quality is improved. Meanwhile, the removed taro lateral branches are composted together with tea bran, so that green and efficient cultivation is realized, and resources are recycled at the same time.

The invention belongs to the technical field of plant tissue culture, and particularly relates to a rapid tissue propagation method for radix ranunculi ternati. The rapid propagation method for the radix ranunculi ternati tissue comprises the following steps: (1) seed selection and disinfection: selecting vigorous seeds, cleaning the seeds, soaking the seeds with mercury bichloride, disinfecting the seeds with alcohol, and finally washing the seeds with sterile water; (2) preparing a primary induction culture medium: preparing the primary induction culture medium; (3) seed induction and proliferation: inoculating the disinfected seeds on a primary induction culture medium, and culturing; after 4-6 weeks of culture, the seeds germinate into plantlets; transferring the plantlets to a subculture induction medium for multiplication culture, and subculturing once every 3-4 weeks; (4) rooting culture: transferring the proliferation seedlings to a rooting culture medium, and culturing for 2-3 weeks until the adventitious buds can root to form complete plants; and (5) seedling hardening and transplanting. The method can improve the rooting rate and shorten the propagation time at the same time.

The utility model relates to the technical field of agricultural planting discloses a cucumber seedling cultivation and planting pot, including the pot body and the pot cover, and the pot cover is located at the top of pot body, be provided with seedling taking subassembly on the pot body for fast seedling taking, seedling taking subassembly includes the air cylinder fixed and installed in the bottom of pot body, the air cylinder bottom is provided with the air hole, and four air holes are symmetrically provided, the outer sealing sleeve of air cylinder is equipped with the sealing plate, the bottom of sealing plate is detachably installed with the connecting column, and three connecting columns are symmetrically arranged around the center of sealing plate, the connecting column is inserted in the bottom of pot body, and the connecting column and the bottom of pot body are sealed and slide connection, the bottom of connecting column is detachably installed with the moving plate, the air cylinder is sealed and slide connection with the slide rod, the top of slide rod is detachably installed with the filter screen, and the filter screen and sealing plate are provided with the soil loosening piece, the utility model solves the problem of difficult transplanting and seedling taking, poor soil permeability and influence seedling survival rate in the process of cucumber seedling cultivation through seedling taking subassembly.

The invention belongs to the field of vegetables, and provides a celery seed germination accelerating treatment method and a seedling raising method, and the celery seed germination accelerating treatment method comprises the operation of treating celery seeds by adopting a nano material. The celery seed germination accelerating treatment method and the celery seedling raising method provided by the invention are particularly suitable for celery germination accelerating and seedling raising under a high-temperature condition, by adding a nano material, the germination rate of the celery seeds' Beijing-celery No. 2 'and' Beijing-celery No. 3 'is obviously improved, and meanwhile, the germination speed, the seed vigor and the seedling vigor of the celery seeds can also be improved; the excessive growth of seedlings is effectively inhibited, the seedling raising period is shortened, the yield increase is promoted, the seedlings with higher quality are produced more quickly, the stress resistance of the seedlings is improved, and the seedlings are easier to survive after being planted; and the cost is low, the effect is good, popularization and application are facilitated, and economic benefits are obviously improved.

The present application relates to the technical field of rice seedling strengthening, and provides a rice biological seedling strengthening agent, which comprises the following raw materials in parts by weight: 8-15 parts of a compound microbial agent, 20-30 parts of humic acid, 10-18 parts of a chelating agent, 0.2-0.8 parts of a plant growth regulator, 35-45 parts of an organic carrier and 0.5-1.2 parts of a biological penetrant. The present application can effectively improve the physicochemical properties of the rice seedling substrate, promote the development of the rice seedling root system and the thickening of the stem, and significantly improve the comprehensive stress resistance performance of the seedling, such as low-temperature resistance, drought resistance, disease and pest resistance, and lodging resistance, so as to improve the survival rate of the seedling, the yield and quality of the rice in the later period, and solve the problems of single fertilizer effect, weak stress resistance effect and easy seedling overgrowth of the existing seedling strengthening agent.

The invention belongs to the technical field of high-temperature alloy preparation, and relates to an oversized fine grain N06625 alloy plate and a rolling method and application thereof. The rolling method comprises the following steps: step 1, selecting a rolling blank with a specific specification; 2, the rolled blank is pretreated, and it is guaranteed that the surface of the rolled blank is free of cracks; 3, heating the rolled blank by using a heating furnace, and preserving heat; and 4, after heat preservation is finished, the alloy plate is discharged out of the furnace and subjected to large-deformation rolling, and the target N06625 alloy plate is obtained. The technical problems that a uniform structure and a fine grain structure are difficult to form in a traditional thermal forming process, and the risk of crystal mixing exists are solved; in addition, due to the fact that N06625 is difficult to form and a hot working window is narrow, N06625 can be formed into an oversized specification at a time through the method, the structure is uniform, and the grain size is larger than or equal to grade 8.

The utility model discloses an agricultural seedling raising device, which belongs to the technical field of seedling raising devices and comprises a constant-temperature seedling raising frame, two groups of seedling raising frames are arranged in the constant-temperature seedling raising frame, placing grooves are formed in the two groups of seedling raising frames, adjusting assemblies are arranged in the two groups of placing grooves, and the adjusting assemblies are connected with the constant-temperature seedling raising frame. The adjusting assembly comprises a rotating shaft and two sets of racks, a gear is fixedly installed on the outer side of the rotating shaft, the two sets of racks are meshed with the gear, redundant water sources after irrigation can be collected, filtered, pumped and refluxed to the water tank to be recycled, water can be evenly and accurately sprayed to crops in the seedling raising frame, and the water quality is improved. The device is simple in structure and convenient to operate, the position of the cultivation frame is convenient to disassemble and adjust, seedlings are convenient to take out for transplantation, inspection or replacement, and the position of the seedling cultivation frame can be flexibly and accurately adjusted according to the growth height of the seedlings.

This utility model discloses an artificial light source device suitable for strawberry cultivation in plant factories, including a lamp housing, an aluminum substrate, and a control panel. A light source module is fixedly connected to the surface of the aluminum substrate. The light source module includes four independent light source channels divided by wavelength: a first light source channel emitting 660nm red light, a second light source channel emitting 450nm blue light, a third light source channel emitting 730nm far-red light, and a fourth light source channel emitting 590nm yellow light. The LEDs are all COB LED packages and are welded to the aluminum substrate according to a uniform distribution and symmetrical arrangement. A driving circuit module corresponding to each light source module is fixedly connected to the other side wall of the aluminum substrate. This utility model can increase the sugar content of strawberry fruits and reduce the rate of deformed fruits, solving the problem of traditional general-purpose light sources having a single spectrum and being unable to adapt to the needs of different strawberry growth stages. Compared with traditional light sources that are manually adjusted, it can reduce manual maintenance time and lower the operating costs for growers.

The invention discloses a cultivation method for high-quality and high-yield leaf gingko, and belongs to the technical field of ginkgo tree cultivation. The cultivation method disclosed by the invention comprises the following steps: (1) fertilizing and preparing soil; (2) cultivating seedlings by using seed kernels; (3) cultivation management; (4) crown shape regulation and control; by regulating and controlling the growth of seeds and seedlings in the seedling raising stage and the cultivation stage, the growth efficiency of trunks is influenced, the number of leaves is increased, the development of root systems is promoted, and the water absorption capacity and photosynthesis efficiency of plants are improved, so that the purposes of effectively increasing the fresh leaf yield and the effective medicinal component content in unit area of the leaf ginkgo biloba are achieved.

The invention relates to the field of hard alloy, and particularly discloses a mining WC-Co hard alloy and a preparation method thereof. The mining WC-Co hard alloy comprises, by mass, 15%-30% of Co, 0%-1.5% of NbScN, 0%-1.5% of NbC and the balance hard phase WC. The hard phase WC comprises ultra-coarse grain WC with the average grain size ranging from 6.0 micrometers to 9.0 micrometers and medium grain WC with the average grain size ranging from 1.0 micrometers to 3.0 micrometers. The mining WC-Co hard alloy has the advantages of being good in comprehensive performance, high in hardness and good in toughness.

The invention relates to the technical field of plant growth regulators, in particular to a growth regulator for inhibiting excessive growth of grape shoots and a use method of the growth regulator. The growth regulator for inhibiting the excessive growth of the new shoots of the grapes is prepared from the following raw materials in parts by mass: 10 to 20 g / L of fulvic acid, 0.2 to 0.4 g / L of exchange acid calcium, 0.15 to 0.45 g / L of D-serine, 1.5 to 2.5 g / L of L-valine, 10 to 20 g / L of compound amino acid powder and the balance of water. The regulator product disclosed by the invention has an obvious effect of inhibiting excessive growth of new shoots of grapes, and the germination rate of side shoots is lower.

The application discloses a citrus seedling rapid seedling and stock method, which comprises seed germination, seedling transplanting and light supplementing seedling treatment: full seeds in mature citrus fruits are selected, and then are sequentially subjected to stirring and soaking in 1% sodium hydroxide solution, soaking in composite disinfectant and cleaning treatment, and then are subjected to constant temperature germination with wet vermiculite; when the length of the seedlings reaches 6-8 cm and the stem thickness reaches 0.8-1.2 mm, the seedlings are transplanted into a seedling bag containing peat, vermiculite, coconut shell, perlite and natural soil; after the seedling transplanting and seedling, a root strengthening nutrient solution is applied, and the seedlings are subjected to LED light supplementing seedling treatment in a greenhouse with a red light and blue light ratio of 8:3, a canopy light intensity of 750 mu mol m-2 s-1 and a light period of 16h / 8h. Through the continuous cooperation of alkali treatment, composite disinfection, air-permeable substrate transplanting and directional red and blue light light supplementing, the germination uniformity and germination rate of the citrus seedlings can be improved, the root rot incidence can be reduced, the synchronous development of the root system and the stem thickness can be promoted, the citrus seedling stock period can be shortened, and the survival rate of the transplanted seedlings can be improved.

The utility model relates to an intelligent seedbed with automatic heating, heat preservation and water replenishing functions, which comprises a seedbed body, an electric heating wire heating system and a plurality of heat preservation layers, the seedbed body comprises a bottom plate and side plates arranged around the bottom plate, and a push-pull panel is arranged at a top end port of the seedbed body; the electric heating wire heating system comprises a heating steel wire net, and the heating steel wire net is arranged in a bottom plate or / and side plates of the seedbed body; the heat preservation layers are laid in the side plates on the periphery of the seedbed body and the push-pull panel respectively, when the heating steel wire mesh is powered on, the interior of the seedbed body is heated, and meanwhile heat loss is reduced through the heat preservation layers above seedlings and around the seedlings. According to the intelligent seedbed with the automatic heating, heat preservation and water supplementing functions, heating is achieved, the heat preservation effect is guaranteed, and the problem that existing seedbed seedling raising is insufficient in heat preservation and heating is solved.

The application belongs to the field of carbon monoxide treatment and catalytic oxidation in sintering flue gas, and discloses a preparation method and application of a ceria-supported bimetallic catalyst. A cerium source, a surfactant, a complexing agent and a crosslinking agent solution are mixed, and the pH is adjusted to make metal ions form hydroxide precipitates to obtain a precursor turbid solution. After hydrothermal reaction, the precursor turbid solution is filtered, washed, dried, ground and calcined to obtain a precursor powder. The precursor powder is dispersed, and a bimetallic solution is gradually added dropwise. The ceria-supported bimetallic catalyst is obtained through drying and calcination treatment. 3+ The surfactant, the complexing agent and the crosslinking agent are introduced to synergistically regulate Ce Hydrolysis, inhibit grain growth and construct three-dimensional network limited space, obtain small grain, large specific surface area, rich in defects of ceria carrier, make it uniform dispersion, enhance metal-support interaction, promote alloy phase or hetero-interface formation, so as to significantly improve the stability of catalytic active center, selectivity.

The invention provides a cucumber seed coating agent, a preparation method and application, and belongs to the technical field of crop seed coating agents. The cucumber seed coating agent comprises the following active ingredients in percentage by weight: 0.3%-0.5% of sodium hypochlorite, 0.006%-0.01% of chlormequat chloride, 0.012%-0.018% of boric acid and inactive ingredients. Cucumber seeds are coated through the combination of sodium hypochlorite, chlormequat chloride and boric acid, germination of the cucumber seeds can be promoted, the germination rate and germination potential of the cucumber seeds can be improved, the leaf area and chlorophyll content of cucumber seedlings can be increased, excessive growth of the seedlings can be inhibited, and strong seedlings can be cultivated.

The invention provides high borosilicate glass and a preparation process of a high borosilicate glass tube with the diameter of 360MM, and belongs to the field of glass materials. The high borosilicate glass comprises the following raw material components in percentage by mass: 20-30% of cullet, 8-12% of borax, 1-3% of boric acid, 3-5% of aluminum oxide, 3-5% of sodium oxide, 1-3% of magnesium oxide, 6-8% of a nano composite additive, 0.6-0.8% of lithium oxide, 0.05-0.1% of neodymium oxide, 0.04-0.06% of europium oxide and the balance of quartz sand, the high borosilicate glass tube comprises an amorphous phase layer, a microcrystalline layer wrapping the amorphous phase layer and an anticorrosive coating wrapping the microcrystalline layer. The preparation method comprises the following steps: firstly modifying boron nitride nanosheets, then mixing the modified boron nitride nanosheets with alumina sol to prepare a nano-composite additive with alumina particles uniformly distributed among the boron nitride nanosheets to form a pillared structure, adding the nano-composite additive into high borosilicate glass, and carrying out heat treatment to obtain the high borosilicate glass. The hardness and the cold and hot impact resistance of the high borosilicate glass can be effectively improved.

This invention relates to the field of agricultural fertilizer technology, and discloses a functional compound fertilizer containing a soil conditioner and its preparation method. The fertilizer provided by this invention is composed of nitrogen, phosphorus, and potassium sources, a compound soil conditioner, microencapsulated functional microbial agents, chelated trace elements, and a slow-release coating agent. The preparation method includes raw material pretreatment, step-by-step mixing, granulation, and coating processes. The fertilizer provided by this invention addresses the shortcomings of existing banana-specific fertilizers, such as poor synergy between soil conditioning and nutrient distribution, mismatch between fertilizer release and growth cycle, and limited stress resistance. It can precisely improve acidic banana plantation soil, achieve dynamic nutrient release, improve fertilizer utilization, reduce the incidence of banana wilt disease, significantly increase yield and fruit quality, is suitable for various cultivation models, and possesses both practical and environmental value.