77results about How to "Meet integration needs" patented technology

The system comprises a system for integrating a call center and WeChat official account customer service. The system comprises a web browser plug-in, a WeChat gateway and a windows client plug-in, wherein the web browser plug-in is connected with the WeChat gateway and the windows client plug-in, and the web browser plug-in is further connected with a third-party standard SIP server. The system realizes effective modular integration, meets the integration requirements, effectively reduces the labor cost, and provides the SDK for service integration, so that the system can perform service expansion for any service system, and fully solves the problem of convenient integration of different services.

The invention pertains to the technical field of complementary metal-oxide semiconductors, which discloses a complementary metal-oxide semiconductor monolithic integrated peak value detection circuit, comprising: a peak value point seeking circuit which is used for generating a rising edge signal at the time of inputting the peak value point of a sine wave signal A; a peak value point discharge circuit which is used for generating a discharge waveform signal E at the site of inputting the peak value point of the sine wave signal; a digital logic, a digital frequency division signal G and a digital waveform signal F are used for controlling the counting of time intervals of an external clock input I, thus generating a digital output signal H of the characteristic time intervals. The circuit of the invention only carries out the sampling of the peak value point, thus simplifying the requirements on a sampling circuit. The peak value detection circuit utilizes the voltage-time conversion (or voltage-duty ratio conversion); the circuit resolution of the invention is controlled by the frequency of a counting clock, thus being much higher than the resolution of the ordinary analog-to-digital converter with the same digital number. The peak value detection circuit can reduce the volume power consumption and meet the needs of the integration of a sensor and the circuits.

The invention discloses a preparation method of polyimide / CCTO@Ag nanoparticle composite material with high dielectric and low loss. According to the method, polyimide is used as matrix, the prepared CCTO@Ag nanoparticles are ultrasonically dispersed in absolute ethyl alcohol, then is blended with polyimide monomer in solvent, then in situ polymerization reaction is carried out on the monomer at room temperature to simultaneously realize copolymerization of polyimide and intercalation recombination with the CCTO@Ag nanoparticles, obtained stock solution is subjected to gradient annealing according to a coating method to finally obtain the polyimide / CCTO@Ag nanoparticle composite film. Compared with pure polyimide, the polyimide / CCTO@Ag nanoparticle composite material prepared according to the preparation method has the dielectric constant (103) increased by 30 times, also has low dielectric loss (0.006) and can be widely applied in fields of high energy storage capacitors, artificial organs, high speed integrated circuits, and the like.

The invention discloses a thyristor structure for CMOS static discharge protection, which is capable of both-way break-over and both-way flyback. The invention is characterized in that: a deep N well is longitudinally arranged on a P type substrate; a second N well, a second P well, a first N well, a first P well and another second N well are arranged transversely in parallel on the deep N well, and a P+ area and an N+ area are respectively transversely arranged in the second P well and the first P well in parallel; wherein, the P+ areas are close to the second N well, the N+ areas are near to the first N well, and the P+ areas and the N+ areas are divided by field oxide. The invention has the advantages of avoiding the defects in the traditional SCR structure such as single-way flyback feature, and meeting the demands for integration level.

The invention discloses a wideband access system based on an HFC (Hybrid Fiber Coaxial) network, comprising a front-end access system, the HFC network and a terminal access system. The wideband access system is characterized in that the front-end system is provided with a cable forwarder modem termination system (CFMTS) and a channel dispatch controller (CDC); the terminal access system is provided with a cable forwarder modem (CFM) and a transmission multimedia to a user terminal, wherein the CFMTS is connected with an IP (Internet Protocol) backbone network; a mixer, an optical transmitter, a photoelectric converting node, an upper frequency converter, an optical receiver and an uplink allocator are arranged between the CFMTS and the CMF. By improving a network structure, network equipment and the network wideband allocation of the traditional structure, the wideband of an uplink channel is enlarged, the uplink noise brought by an access cable can be blocked off and the transmission capability of the network can be enhanced. The wideband access system provides the function of multiplexing and de-multiplexing video streams of the uplink channel and the downlink channel, ensures the mixed transmission of uplink data, voice and video and meets the requirement of three-network integration while the traditional simulation television, an edge quadrature amplitude modulator (EQAM), a set top box and other equipment are ensured to normally work.

The invention discloses a functional flexible photonics auxiliary frequency measuring device based on combination of stimulated Brillouin scattering and Mach-Zehnder interference. The functional flexible photonics auxiliary frequency measuring device comprises a laser source, an electric amplifier, a dual-polarization Mach-Zehnder modulator DPol-DMZM, an erbium-doped fiber amplifier EDFA, a polarization controller PC, a coarse / fine frequency measuring module and a processing module. The invention also provides a functional flexible photonics-assisted frequency measurement method. The method is flexible in function and reconfigurable, can support frequency measurement of a radar early warning receiver and an electronic countermeasure receiver under the same hardware configuration, has a large measurement range, high precision and high response speed, and is suitable for a miniaturized, integrated and integrated cognitive detection system in a complex electromagnetic environment.

The invention relates to a bacterial strain for preventing potato blight and a preparation method and the application of a preparation thereof. The bacterial strain is bacillus subtilis MES810, the preservation date is Aug, 10th, 2017, and the preservation number is CGMCCNo. 145154. The preparation method of the preparation corresponding to the bacterial strain comprises the following steps: activation of a culture; preparation of a primary seed solution; preparation of a secondary seed solution; fermentation in a fermentation tank, and discharging to obtain a bacillus subtilis liquid preparation. The bacillus subtilis has a strong inhibiting effect for fusarium pathogenic bacteria consisting of Fusarium solani, fusarium oxysporum, fusarium moniliforme, Fusarium nivale or elderberry fusarium and Eavenaceum, the occurrence of potato blight is prevented, the control efficiency is more than 80%, and the increase of both production and income for potato is promoted. The bacterial strain disclosed by the invention has the characteristics of no toxicity, no residue, no growth inhibition, small using amount and simple application method, and provides the possibility for the diversification of application schemes and the protection of ecological environment.

The invention discloses a preparation method of a pH-responsive dual-drug-release metal-organic framework-upconversion nano-system. The preparation method comprises the following steps of: adopting apolymer modification method to improve the water solubility of the upconversion nano-crystal with a core-shell structure, and growing a metal-organic framework on the surface of the upconversion luminescent nano-crystal to obtain an upconversion nano-system coated with the metal-organic framework; and attaching Adriamycin hydrochloride containing amino group to the surface of the metal-organic framework, and adsorbing other anticancer drugs into the porous structure of the metal-organic framework to obtain the double-drug-loaded metal-organic framework-up-conversion nano-system. The nano system provided by the invention has good stability, good biocompatibility, simple and reliable preparation method and good repeatability. The nanosystems have tumor diagnostics-Therapeutic integration canbe used as an imaging agent for fluorescence imaging and magnetic resonance imaging, as well as drug delivery and pH-responsive dual drug release, and can be used as a drug carrier.

The invention discloses a digital video cable suitable for an unmanned plane optoelectronic system and belongs to the field of electrical connection. The digital video cable suitable for the unmanned plane optoelectronic system comprises two connectors and a wire group and is characterized in that the length of a power source pin of each connector is smaller than those of other pins, the wire is composed of a plurality of double-twisted shielding wires and a double-twisted wire, the double-twisted shielding wires are placed in parallel to the double-twisted wire after being coated with an insulating layer, and the double-twisted shielding wires and the double-twisted wire are finally coated with a metal shielding net layer. The digital video cable suitable for the unmanned plane optoelectronic system achieves the purpose that high-frequency digital video signals and power signals are transmitted together in the optoelectronic system and has the function of hot plugging and the advantages of being simple in structure, high in safety, good in environmental suitability, capable of being used in the unmanned plane optoelectronic system and other imaging devices of the same type and the like.

The invention belongs to the technical field of wave-absorbing materials and metamaterials, and provides a broadband wave-absorbing metamaterial comprising periodically arranged cellular units, the periodic distribution of the cellular units is square, and the period size is determined according to the wave absorbing bandwidth and the highest wave absorbing working frequency, so that obvious diffraction and reflection of electromagnetic waves on the surface of a material are avoided. The cellular unit is made of a single medium type wave-absorbing medium, the cellular unit is divided into an upper part and a lower part along the incident propagation direction of electromagnetic waves, the upper part is of an axisymmetric gradient gradual change structure, and the lower part is of a continuous structure; and the thicknesses of the upper and lower dielectric parts of the cell are determined according to the wave-absorbing bandwidth, the intrinsic dielectric constant of the dielectric wave-absorbing material and the loss angle tangent value. The characteristic that the dielectric constant of the material gradually changes along with the thickness can be controlled by designing the change gradients of different outlines, so that surface reflection is reduced as much as possible, electromagnetic waves effectively enter the wave-absorbing material, and loss is continuously absorbed in the propagation process.

The invention provides an active and passive radar composite seeker processor system based on a VPX architecture. The signal processor comprises a processor backboard, an interface timing sequence unit, an active acquisition and emission unit, a passive acquisition and processing unit, a radar signal processing unit and a radar image processing unit, and each unit performs data interaction with other units in the signal processor through SRIO, RS485, GPIO and other interfaces. Different cells are combined, and three working modes, namely active radar SAR imaging, active radar monopulse and passive radar work modes, can be independently adopted; and the functions of large forward inclination SAR imaging, SAR image matching and positioning in an active radar SAR imaging mode, target detection, distance measurement, angle measurement and tracking in an active radar monopulse model, target searching and direction finding in a passive radar mode and the like are realized. The system meets the integrated requirements of the three work modes, and the radar signal processing unit can be used for receiving a control instruction to complete switching among the modes.

The invention relates to a corrosive agent of an HfSiON high-K gate dielectric material and a corrosion method by using the corrosive agent, which belong to the technical field of integrated circuit manufacture. The corrosive agent comprises 0.19-4.83 percent by weight of hydrofluoric acid. The corrosion method by using the corrosive agent comprises the following steps: forming the HfSiON high-K gate dielectric material on an Si substrate, an Si / SiO2 interface layer or Si / SiON interface layer, and soaking the HfSiON high-K gate dielectric material in the corrosive agent for wet method corrosion. The corrosive agent is used for carrying out corrosion on the HfSiON high-K gate dielectric material and can reduce the hydrolysis of the hydrofluoric acid, thereby the corrosion speed of the HfSiON high-K gate dielectric material is improved, the corrosion speed of field oxide region SiO2 can be reduced, and the selection ratio of HfSiON to the field oxide region SiO2 can be further improved.

The invention relates to the technical field of agricultural irrigation, and in particular relates to a negative water pressure irrigation and fertilization system and a control method. The negative water pressure irrigation and fertilization system comprises a water source, a fertilizer solution control device and a negative water pressure device, wherein the fertilizer solution control device comprises a fertilizer solution box, a display screen, a sensor and a surfing pump; the fertilizer solution box is communicated with the water source; the display screen is arranged out of the fertilizer solution box; the sensor and the surfing pump are respectively arranged in the fertilizer solution box; the negative water pressure device comprises a liquid storage bucket, a pressure control pipe, a gas collecting bottle and a plurality of ceramic plates; the liquid storage bucket is communicated with the fertilizer solution box; one end of the pressure control pipe is connected with the liquid storage bucket; the other end of the pressure control pipe is connected with the gas collecting bottle; and the gas collecting bottle is communicated with the plurality of ceramic plates. The negative water pressure irrigation and fertilization system is capable of simultaneously supplying moisture and nutrients, and supplying fertilizer solutions with different concentration according to the change of the growth period of the crop, and meets the integrated requirements of growth and development of crops on moisture and nutrient, so that high quality and high yield of the crop are realized.

The invention discloses a production method of a high-concentration water-soluble nitrophosphate fertilizer. The method is characterized in that a resin exchange procedure is added on the basis of the freezing nitrophosphate fertilizer technological process to remove metal ions like calcium ions, magnesium ions, aluminum ions and iron ions in a defluorination mother liquid, and the water-soluble nitrophosphate fertilizer is prepared; and besides, a calcium ammonium nitrate production procedure is added after the resin exchange procedure, and a by-product generated from resin exchange is converted into a calcium ammonium nitrate product. According to the method, while the freezing nitrophosphate fertilizer technology is utilized to produce the water-soluble fertilizer, the production expense is reduced and operation is simplified; besides, generation of reproduced calcium sulfate and accumulation of magnesium aluminum iron phosphate deposits are avoided, and the requirements of effective resource utilization and zero emission are achieved; and the obtained product is good in physical and chemical properties, high in water solubility and wide in application range, fertilizer flushing, drip irrigation, topdressing and soilless culture of crops are facilitated, and the requirement of integration of water and fertilizers is met.

The invention discloses Fortran simulation model system based on high level architecture (HLA), and aims to solve the problem that the conventional Fortran simulation model cannot be added into an HLA distributed system. The Fortran simulation model system based on the HLA comprises a response time index (RTI) system unit, an adapter unit and a Fortran simulation model unit, wherein the adapter unit comprises a file encapsulation module, a function recalling module and an RTI service module. According to the Fortran simulation model system based on the HLA, a Fortran language module can be communicated with a C language module through a C language program on an object file layer; and the integration demand of the Fortran model during cooperative simulation can be met, so that the generality of cooperative simulation and the reusability of the existing Fortran model are improved.

The invention provides a five-layer data fusion model based on CityGML for the application requirement of high-precision vector data fusion, and realizes a multi-level real-time fusion updating method covering a traffic GIS road network. Firstly, a multi-level, object-oriented and lane-level fusion model based on the OGC standard is provided, the model is defined and described on the concept level, the logic level and the physical level, and the geometry, the semantics and the topology related to the model are completely explained; 2, designing an adaptive data fusion method, and realizing clustering analysis, linearization and topology reconstruction of the probe vehicle, clustering analysis-based vector road network matching of a vector road network and position and semantic approximation information-based fusion of POI data; thirdly, an LOD-s model management module is integrally designed; experimental results show that the tool meets the requirement of multivariate vector data fusion, and compared with manual self-adaptive fusion, the efficiency can be greatly improved on the premise of meeting multiple levels and high precision.

The invention relates to a fusion graph generation method and device and a computer readable storage medium. The generation device may be included as a computing device in a combined processing device, and the combined processing device may also include an interface device and other processing devices. The computing device interacts with other processing devices to jointly complete the computing operation specified by the user. The combined processing device can further comprise a storage device, and the storage device is connected with the computing device and other processing devices and used for storing data of the computing device and other processing devices. According to the scheme, the IR graph with the control flow can be preprocessed to meet the operator fusion requirement of themachine learning processor, and then the fusion graph of the machine learning processor can be generated based on the preprocessed IR graph.

The invention discloses an organic-inorganic heterojunction diode and a preparation method thereof. The organic-inorganic heterojunction diode comprises a lower electrode, a metal oxide layer formed on the lower electrode, an organic functional material layer formed on the metal oxide layer, and an upper electrode formed on the organic functional material layer. The organic-inorganic heterojunction diode is low in threshold voltage, high in switch ratio and working frequency, simple in structure, easy to integrate, and suitable for integrated rectification circuit parts of organic electronic apparatuses.

The invention discloses a miniature ultra-low capacitance solid discharge tube and a manufacturing method thereof. A boron-based region P is arranged on the solid discharge tube, a phosphorus diffusion buried layer N- which is partially overlapped is arranged on one side of the boron-based region P, a first phosphorus diffusion region N+ is arranged in the boron-based region P, and a plurality ofshort-circuit holes are arranged in the first phosphorus diffusion region N + to form a cellular cathode. A boron region P and a second phosphorus diffusion region N+ are arranged below the solid discharge tube, and the boron region P and the second phosphorus diffusion region N+ are arranged at intervals to form a one-way chip anode structure. In the invention, on the basis of an original low-capacitance structure design, a N- buried layer is added to the cathode so that heat sink of each cellular cathode is increased, and a flow capacity is improved on the basis of a same chip area. A boronregion and a second phosphorus diffusion region N+ are arranged in an symmetrical mode, reverse voltage drop of a single discharge tube is eliminated, and based on the design, an area of an original chip can be reduced so that the area of a PN junction is reduced, and a junction capacitance is greatly decreased.

The invention provides a bulk data transmission method for a Web Service client. The method comprises the following steps that: 1, the Web Service client reads bulk data from a database; 2, the Web Service client performs serialization and compression processing on the acquired bulk data; and 3, the Web Service client transmits the processed data to a Web Service server. The invention also provides the Web Service client. By using the scheme, the Web Service client has bulk data transmission capability, and the bulk data of more than 100,000 rows can be transmitted, so that the data transmission capability of an SOA application system is improved, the consumption of the data in memory resources is reduced, and requirements for the integration of the bulk data in an enterprise are met.

The invention discloses a radio frequency front-end module and a wireless communication device. The radio frequency front-end module comprises a substrate, a push-pull power amplifier chip and a power supply end, the push-pull power amplifier chip and the power supply end are arranged on the substrate, the push-pull power amplifier chip comprises a first differential amplification circuit, the first differential amplification circuit comprises a first differential transistor and a second differential transistor, the first differential transistor is configured to amplify a first radio frequency signal, and the second differential transistor is configured to amplify a second radio frequency signal; the output end of the first differential transistor is connected to the power supply end through a first metal wire arranged on the substrate, and the output end of the second differential transistor is connected to the power supply end through a second metal wire arranged on the substrate. The equivalent inductor formed by the first metal wire and the second metal wire is used for replacing the first inductor and the second inductor which are actually existing, impedance and insertion loss in the feeding process are reduced, the area of the radio frequency front-end module is reduced, and therefore the power conversion efficiency and the output power of the radio frequency front-end module are guaranteed.

The invention discloses a space distributive type camera boresight included angle measurement method. A high-precision two-dimension rotary table, a customized three-face reflecting prism, a precise angular instrument and a high-precision locating and error compensating device are utilized to construct a measurement system. The customized three-face reflecting prism is installed at the pitching rotating shaft end of the high-precision two-dimension rotary table through a two-dimension adjustment tool, and auto-collimation is performed on the three-face reflecting prism through the precise angular instrument. The two-dimension adjustment tool is adjusted, so looks can always exist when the precise angular instrument performs auto-collimation on the three-face reflecting prism. The rotary table is rotated and the space position of a paralleled light tube is adjusted, so boresights of all cameras can be adjusted to be parallel to the optical axis of the paralleled light tube in sequence. Measurement data generated when the precise angular instrument performs auto-collimation on the three-face reflecting prism are stored, and then the included angle of the cameras to be measured can be obtained through computation. The technology is suitable for being used in space distributive type camera boresight included angle measurement, and the measurement accuracy can be superior to 3''. The method can be applied to three-line array camera integrated measurement and passes on-orbit detection.

The invention provides a door control system for unattended hotel, which composes a network in a wireless connection mode to realize high-efficiency and accurate processing. By using the wireless door control system, the traditional artificial watching mode is replaced, thereby greatly saving the operating cost of the hotel. Simultaneously, the server end can monitor and control all rooms in the hotel, thereby realizing the integrated requirements of anti-theft and maintenance management, simplifying the monitoring, control and anti-theft programs of the hotel, and greatly improving the monitoring timeliness and accuracy and the control convenience.

The invention provides an underwater sound absorption metamaterial based on an optimized pore cavity. The underwater sound absorption metamaterial comprises periodically arranged cellular units, and each cell is composed of three parts: a fiber reinforced resin panel, a viscoelastic polymer layer and an optimized pore cavity combination. The three fiber reinforced resin panels divide the cell intoan upper layer and a lower layer with different heights along the incident propagation direction of the sound part, the two layers are filled with viscoelastic polymers, and the optimized pore cavitycombination comprises two independent pore cavities which are respectively positioned in the two layers of viscoelastic polymers. The pore cavity of the underwater sound absorption metamaterial adopts a curve optimization type appearance to realize low-frequency broadband sound absorption, and the fiber reinforced resin panel is adopted to enhance the water pressure resistance so that the fiber reinforced resin panel can be applied to the condition that the two ends are both water backs, the limitation that the traditional polymer containing the pore cavity needs to be attached to a rigid shell material is overcome, and a new choice is provided for an underwater sound absorption material. The metamaterial has the characteristics of simple structure, readily available raw materials, maturepreparation process, strong designability of geometric parameters of the pore cavity and the like, meets the integrated requirements of light weight and low-frequency broadband sound absorption, andhas wide application in the fields of sound absorption skins of underwater equipment or vibration and noise reduction materials and the like.

The invention relates to a wireless main controller correspondingly connected with an electric system according to the voltage amount of cables and a plurality of distribution equipment inside the electric system. The wireless main controller can carry out accurate data receiving and sampling analysis on the cables and the distribution equipment inside the integral electric system through a report of a terminal monitor inside an equipment receiving system, sends the data report to a monitoring center of the electric system through a GPRS (General Packet Radio Service) module and an Internet module and also realizes the control of the integral electric system and the automatic gate closing control to the cables and the distribution equipment by receiving an order of the monitoring center of the electric system. The invention meets the requirements for the integration of the monitoring, the control and the maintenance management of all the cables and distribution equipment inside the electric system, thereby simplifying the procedures of the monitoring, the control and the maintenance management of the electric system and enhancing the timeliness and the accuracy of the monitoring and the convenience of the control.

The invention relates to testing transformer voltage regulating devices, in particular to a testing transformer voltage regulating device applicable to lightweight integrated power frequency withstandvoltage testing device. The testing transformer voltage regulating device comprises a communication unit, a monitoring unit, a control unit, a sine wave voltage regulator, a switch power supply, a radiating device and a master control switch and is characterized in that the control unit acquires an instruction from the communication unit and controls the sine wave voltage regulator to output setvoltage and perform real-time regulation according to the feedback of the monitoring unit; the monitoring unit is connected with a monitoring display screen to display testing data on the monitoring display screen in real time. The testing transformer voltage regulating device has the advantages that a handheld terminal is used to complete remote control, the voltage regulator is separated from the controller, and the size of the device is only 1 / 3 of that of a traditional control cabinet; in addition, by using high-power electric and electronic components and a digital control method, high specialization degree is achieved, the weight of the device is only 1 / 5 of that of a same-power autotransformer regulator, and accordingly the integration and lightweight requirements of the novel powerfrequency withstand voltage testing device are satisfied.

The invention provides a content management integration method and a system. The method comprises the following steps: a business document sent by a client of a content management integration system is stored in the mode of a file package in a server of the content management integration system; the server generates a file package ID of a file package corresponding to the business; when the client requests for a document of first business, the client interacts with the server to obtain a file package ID of a file package corresponding to the first business; and the client acquires file package information through the file package ID from the server and displays the file package information. The file package is used as the smallest unit for the interaction with a business system, and business requirements of enterprises can be met.

The invention provides a system-in-package method and structure of a heterogeneous integrated chip. The method comprises the steps: enabling bottom surfaces of a plurality of substrate chips to be pasted on slide glass, and forming a first integrated adapter plate; forming a first plastic package layer on the first integrated adapter plate, wherein the substrate chip and the first plastic packagelayer form a first plastic package body; performing a mechanical or chemical polishing process on a top of the first plastic package body to expose electric lead-out parts of the plurality of substrate chips; manufacturing a metal interconnection layer and a dielectric layer on the top surfaces of the plurality of substrate chips, wherein the metal interconnection layer is electrically connected with the electric lead-out parts of the plurality of substrate chips; connecting the plurality of heterogeneous chips to the first integrated adapter plate to form a second integrated adapter plate; performing a mechanical or chemical polishing process on the top of the second integrated adapter plate to enable absolute heights of the plurality of heterogeneous chips to be the same; and removing the first plastic package body from the slide glass.

The invention designs a traditional Chinese medicine image classification and retrieval method based on a pyramid network, and is used for solving various problems that traditional neural network classification focuses on global semantic information such as contours and shapes, and a lot of information is lost due to multiple down-sampling operations. In order to achieve an ideal classification effect, multi-scale feature fusion is realized through a pyramid structure of a feature pyramid, and the requirement that shallow-layer and deep-layer spatial and semantic information needs to be fused in traditional Chinese medicine decoction piece image classification is met. Aiming at the problems that a multi-scale feature fusion mode can cause a large number of redundant features and neural network training can be interfered by redundant information, an SE-Net model is used, the redundant features are reduced, a sampling strategy and triple loss are combined, a multi-task learning framework is used for classifying and retrieving images at the same time, and more compact and accurate traditional Chinese medicine image feature information can be obtained.

The invention discloses a viscosity reducing method for freezing method nitrophosphate neutralized slurry. According to the viscosity reducing method, on the basis of the freezing method nitrophosphate technological process, a resin exchange procedure is added for removing metal ions of calcium, magnesium, aluminum and iron in defluorinated mother liquor, and the purpose of reducing the viscosity of the neutralized mother liquor slurry is achieved. Through the method, the viscosity of the neutralized slurry is reduced, the cost is low, operation is simple, secondary pollution is avoided, obtained products are good in physical and chemical property, high in water solubility and wide in application range and meet the integration demand of water and fertilizer.