84 results about "River delta" patented technology

The invention belongs to the technical field of plant agamous propagation and provides a method for raising seedlings of llex integra by cutting, which solves the technical problem that the conventional agamous propagation of the llex integra is difficult. The method comprises the following steps of: shearing spikes of a one-year-old half-lignified branch or an annual half-lignified hardwood branch, soaking the sheared one-year-old half-lignified branch or annual half-lignified hardwood branch into a blended hormone solution of an NAA, a DMSO and a VC or a PVP, inserting the soaked one-year-old half-lignified branch or annual half-lignified hardwood branch into a substrate prepared by mixing turf, vermiculite and perlite, and performing rooting culture management in a small sealed row cover. The technique for raising seedlings by cutting provided by the invention fulfils the aims of high rooting rate and simple operation and solves the problem that the agamous propagation of the llex integra is difficult. The obtained nursery stocks are excellent in quality and can adapt to the climatic environment in most parts of the Yangtze River Delta in China. The method of the invention has very important function and significance for the protection and reasonable development and use of the llex integra resource.

The invention relates to a fan delta front reservoir prediction method based on a composite sand body configuration model, which comprises the following steps: 1) determining a fan delta front composite sand body configuration element by research on the coring wells and sedimentary facies in a work area, dividing and identifying a configuration unit boundary by using a logging curve in combination with dynamic data; 2) according to the above configuration model, determining the boundary of a composite river channel, identifying and dividing a single channel within the composite river channel; 3) finding a developmental estuary dam sand body corresponding to the single river channel, researching configuration unit distribution in isochronous stratigraphic architecture, and identifying each configuration unit; 4) researching the contact relationship and the combination feature of the configuration units in a multi-well profile, the distribution characteristics of the configuration units on the plane, and the distribution direction and scale so as to form fan delta front reservoir prediction. The fan delta front reservoir prediction method can realize the prediction and fine characterization of the composite sand body, lays a solid foundation for the deployment of the well pattern, and provides basis and guidance for the later adjustment and the tapping of the remaining oil.

The invention relates to a method utilizing coastal saline soil of the Yellow River Delta to grow peanuts, which comprises the following steps: (1) building platform fields which are 0.08-0.10 hectare in area and are separated by a main drainage ditch and drainage ditches; (2) respectively applying smashed crop straw and thoroughly decomposed farmyard manure to the surfaces of the platform fields, and then deeply ploughing and leveling the platform fields to obtain the leveled platform fields; (3) irrigating the leveled platform fields to enable the depth of water of the earth's surface to be 10-15cm, and obtaining the platform fields to be ploughed; (4) performing rotary tillage to the platform fields to be ploughed, then making rectangular pieces of land in the fields, establishing low banks of earth between the fields, sowing the peanuts in the flat rectangular pieces of land in the fields, applying compound fertilizer of 900-1,200kg/hectare and calcium superphosphate of 600-800kg/hectare between the lines, and covering a mulching film after seeding; and (5) performing field management according to the prior art. By means of the method, the coastal saline soil is improved effectively and economically, and good economic benefits and environmental benefits are obtained.

The invention relates to a cuttage propagation method of Virginia oak, which belongs to the technical field of plant cultivation. The method comprises the following steps: firstly, a sterilizing seedbed is built in a big-arch shelter, an arch shed is built on the seedbed, a hole pan provided with cuttage substrate is arranged in the seedbed, and the cuttage substrate is treated and sets aside; secondly, branches derived from close roots of the Virginia oaks grown for 2-4 years are selected to prune ears in February to March every year when sprouts do not and are about to burgeon, and the ear strips are pruned into branches; thirdly, the branches are treated by root stimulating agent, and the cuttage is done immediately, for the branches which then enter into the management after the cuttage; fourthly, after more than 70 percent of branches root and sprout, the hole pan is moved to forcibly exercise the plantlets outside the big-arch shelter, and the plants are transplanted into ground after being exercised for 30-35 days at the last third of the December or the last third of the February of the next year and enter the management after transplanting. The cuttage propagation adopting the method has high survival ratio and fast propagation speed. The invention is suitable for the climatic environments in most parts of Yangtze River Delta in China and has the survival ratio up to 80-90 percent, and the obtained nursery plantlets of the Virginia oaks have sound quality.

The invention relates to a penetrating-stretching type pore water pressure measurement device and a measurement method thereof. A projecting segment of a taper penetration head is inserted into a filter pipe and is connected with the filter pipe through a screw thread or a pin. The filter pipe is externally provided with a sleeve pipe and is in sliding fit with the sleeve pipe. The sleeve pipe is tightly pressed on a shoulder of the sleeve pipe and the taper penetration head through a gasket. A bottom of a conduit is arranged on an upper end of the sleeve pipe through screw thread or nestification. According to the device and the method, problems that pore water pressure monitoring and measurement are complex and data is not direct in a saturated soft soil distribution region are solved, the device and the method are especially suitable for the pore water pressure monitoring and measurement of a fine grain soil layer with formation reasons of a fourth system river delta phase, an oxbow lake phase, a lake phase, a lagoon phase, a marsh phase and the like, measurement of a groundwater table, a perched water level and a confined water head of underground water, underground water monitoring, and water quality layered monitoring and sampling of an underground water environment. Compared with the prior art, the device has the advantages of simple structure, low cost, practicality and convenience, and the measurement method has the advantages of convenience, easy enforcement, convenient operation and reliable data.

The invention discloses a rice mechanical dry direct sowing culture method for yellow river delta saline-alkali soil. The method includes the steps of variety selection, land preparation, sowing, water management, fertilization, weed disaster prevention and treatment and pest control. A variety which is good in saline-alkali resistance, high in germination potential and resistant to lodging is selected; the sowing time is mid-to-late May, and the dry seed sowing amount ranges from 8 kg/mu to 9 kg/mu; watering is conducted in advance for salt leaching and alkali pressing according to the water management mode; in the step of weed disease prevention and treatment, phragmites australis is prevented before sowing; in the step of pest control, water earthworms need to be prevented. Based on an existing rice mechanical dry direct sowing culture method, all the aspects are improved, the corollary culture technology specially for rice mechanical dry direct sowing of the yellow river delta saline-alkali soil is formed, and therefore technical supports are provided for farmers in the region to plant rice. The method has the advantages of saving time, labor, water and cost, increasing the effect and the like, and has important significance in improving the saline-alkali soil, improving agricultural production efficiency and increasing the yield of grain crops.

The invention relates to a method for determining statistics inversion parameters of a braided river delta reservoir, which is characterized by comprising the steps of 1) determining the braided riverdelta sedimentary configuration pattern of a target work area; 2) conducting a seismic forward modeling test on the target work area by combining seismic data quality control and logging data qualitycontrol of the target work area based on the braided river delta sedimentary configuration pattern of the target work area, and building a forward modeling model of the target work area; 3) determining a horizon dividing algorithm, and establishing an inversion framework; 4) determining the inversion lateral range according to a braided river delta lateral range and sand body scale fitting formula; and 5) hierarchically solving the accurate sand-to-ground ratio of each single layer by adopting a Markov chain-Monte Carlo algorithm. The method is clearer in flow geological meaning, higher in inversion precision and more reasonable in description for spatial distribution characteristics of the reservoir, and has important significance for improving the geostatistics inversion precision of the braided river delta reservoir.

The invention provides a method for predicting the width of underwater distributary channels of a delta front. The method comprises the steps that 1, static recognition is conducted on an underwater distributary channel microfacies according to a small-layer depositional microfacies picture; 2, dynamic analysis is conducted on a typical well group, and single-stage channels are dynamically divided; 3, the recognized underwater distributary channels of the typical well group are finely depicted through a logging phase and rock core information, the finely depicted single-stage underwater distributary channels are measured to obtain quantitative parameters of the underwater distributary channels; 4, the relation between the width of a channel sand body and the thickness of a single-stage sand body is established to calculate width-to-thickness ratio, a regression formula is established according to the quantitative parameters to predict an underwater distributary channel sand body. Qualitative description is conducted on underwater distributary channel distribution, qualitative description is also conducted on channel width, and a basis and a guidance are provided for research area periphery rolling development and finding of a beneficial facies belt of the underwater distributary channel sand body.

The invention relates to a method for planting oat by utilizing yellow river delta coast salinized soil. The method comprises the following steps of: (1) applying crop straws and thoroughly decomposed farm manure onto the surface of the yellow river delta coast salinized soil, deeply ploughing and leveling; (2) irrigating deeply land ploughed and leveled in the step (1) before seeding; (3) uniformly spreading a soil ecological modifying agent and the compound fertilizer at the same time after all surface water permeates into soil, and carrying out rotary tillage; and (4) ridging after rotary tillage, seeding oat from the last ten days of March to the beginning of April, and compacting after seeding; and (5) carrying out childbearing period irrigation, fertilization, pest control, weed control and harvesting. The method disclosed by the invention has the advantages of low investment, can continuously improving the soil structure and can realize certain economic benefit.

The invention discloses a wetland rejuvenation method for shell dikes of the yellow river delta by utilizing plants. The wetland rejuvenation method comprises following steps: adopting a survey method for belt transects and quadrats to measure an altitude in a selected wetland rejuvenation plot; record topographic and geomorphic conditions the sealand distance, sea wave erosion and human disturbance probability; collecting soil and measuring physicochemical properties of soil, and counting above features by utilization of a CCA order; dividing areas based on habitat conditions of selected wetland rejuvenation plots; screening adaptive plants and adaptive restoration species in all habitat areas; eliminating plants with importance value less than five and ordering remaining species in a CCA order; and selecting adaptive plants in all habitat areas and recovering plants by zoned plantation. The wetland rejuvenation method for shell dikes of the yellow river delta by utilizing plants has following beneficial effects: by following the principle of adjusting measures to local conditions, targeted investigations are made on wetland regions; the problem of vegetation degradation in shell dikes of the yellow river delta is effectively solved; and the wetland rejuvenation method is high in operability, low in cost and maintenance cost and obvious in landscaping and ecological functions and has great social benefit and environmental benefit.

The invention relates to a single-stage underwater distributary channel identification method. The identification method includes the following steps: 1) in a braided river delta, classifying stages of drilling sand bodies of each well according to the thickness from a target bed to a marker bed; 2) studying sedimentary microfacies of sand bodies of the same stage, and analyzing distribution directions of underwater distributary channels; 3) in the distribution directions of the underwater distributary channels, classifying all underwater distributary channels according to contact relations ofunderwater distributary channels of adjacent wells; and 4) determining a distribution range of all distributary channels of underwater distributary channels of a single stage according to seismic properties and boundaries of seismic inversion in predicting sand body distribution. The single-stage underwater distributary channel identification method provided by the invention can determine a distribution range of all distributary channels of underwater distributary channels of a single stage, and more clearly display spatial variations of lithology and lithofacies of a front belt of a braidedriver delta so as to further provide technical support for the exploration and exploitation of complex lithologic reservoirs.

The invention discloses a delta deposit remote sensing detection method and device. The method comprises the following steps: sampling surface deposits on different parts of different sedimentary facies in a delta; obtaining the particle size distribution of obtained deposit sample, determining the particle size of obtained deposit sample; obtaining the reflectivity spectrum of deposit sample, re-sampling the reflectivity spectrum to obtain reflectivity spectrum that is identical with the satellite data spectral band; establishing a model representing the relationship between the particle size of the deposit and the reflectivity of the satellite data spectral band; obtaining the satellite data to establish a satellite look-up table, selecting part of satellite data; subjecting the selected part of satellite data to geometric correction, then converting the satellite data into reflectivity data; according to the spectral characteristics and textural characteristics of reflectivity data, classifying the reflectivity data, extracting the reflectivity data of surficial exposed area on the delta; predicting the percentage contents of clay, silt, and sand in the surface deposit according to the reflectivity data of surficial exposed area on the delta, and drawing a picture representing the percentage contents of clay, silt, and sand in the delta.

The invention belongs to the technical field of agricultural production, and particularly relates to a method for identifying the salt tolerance of sweet potatoes in the seedling stage. The method comprises the following steps: (1) salt stress treatment for sweet potatoes in the seedling stage; (2) physiological indicator detection for sweet potatoes in the seedling stage; (3) data analysis and salt tolerance division; (4) salt tolerance mathematical evaluation equation and salt tolerance index screening, namely stepwise regression analysis by using the salt tolerance comprehensive evaluationvalue D value as a dependent variable and the salt tolerance coefficient of each single index as an independent variable to establish a regression equation, and salt tolerance division according to the comprehensive salt tolerance D value. According to the method, the standard equation result is accurate and reliable, the operation is simple and convenient and is easy to grasp, the method is lessinfluenced by the outdoor environment, the condition is controllable, the comprehensive salt tolerance of sweet potatoes in the seedling stage can be overall reflected, and the result is reliable. Themethod can be used for quickly evaluating the salt tolerance of sweet potato varieties in the seedling stage, has small blindness and high efficiency, and provides germplasm materials to sweet potatosalt tolerance variety seedling and salty land development and utilization in the Yellow River Delta.

The invention discloses a fruit and vegetable nutrition regulator, a preparation method thereof and a usage method thereof. The fruit and vegetable nutrition regulator comprises the following materials or elements in part by weight: 25 to 30 parts of Mg, 4 to 5 parts of B, 5 to 6 parts of Mn, 8 to 10*10<-2> parts of Mo, 2 to 5*10<-2> parts of SiO2, and 3 to 5*10<-2> parts of amino acid. The preparation method for the fruit and vegetable nutrition regulator comprises the following steps: mixing and hydrolyzing a mixture of compounds containing magnesium, boron, manganese and molybdenum elements respectively or simultaneously and a protein source, and then mixing the hydrolyzed product and silicon dioxide colloidal solution to form the fruit and vegetable nutrition regulator. The usage method for the fruit and vegetable nutrition regulator comprises foliar fertilization. The fertilizer makes up the blank of the field aiming at the properties of soil and the nutritional requirements of crops in the Pearl River Delta region; a final product of the fruit and vegetable nutrition regulator contains certain oily substances so that the fertilizer solution can effectively stay on the leaf surface and the defect of harming or blocking pores of leaves does not exist. The preparation method has the advantages of simple and convenient preparation process, low cost, high production efficiency and strong economic benefit, and is suitable for large-scale production.

The invention relates to an efficient planting pattern for cotton, helianthus annuus and corn intercropping and rotation in heavy chlorate clay saline-alkali soil in yellow river delta. A mode of intercropping and rotation of crops different in salt tolerance and salt absorption is adopted for the first time, a long-stalked crop (spring corn and helianthus annuus) wind strip and a green manure (summer corn) returning-to-field area are arranged, and through intercropping of annual crops of the planting mode, rational arrangement of crops for rotation, crop rotation of inter-annual crops and soil productivity cultivation and by comprehensive coordination of growth rate of different crops, efficient ecological planting of heavy clay saline-alkali soil with salt content reaching over 0.4% is realized. Annual intercropping is carried out for spring corn, cotton, helianthus annuus and summer corn, inter-annual crop rotation is carried for cotton and helianthus annuus, successive cropping obstacles of single crop are alleviated beneficially, and sustainable development of soil is guaranteed.

The invention relates to the field of agricultural microorganisms, and in particular relates to a rhizobium pusense capable of degrading apple autotoxin phlorizin and application thereof. A rhizobiumpusense YIC4105 is preserved in China General Microbiological Culture Collection Center (CGMCC) on November 2rd, 2017 with the preservation number of CGMCC No.14852. The bacterial strain is separatedfrom sesbania rhizosphere soil naturally distributed at the Yellow River delta and is obtained through artificial separation and purification; the bacterial strain has relatively strong capability ofdegrading phlorizin and can be stabilized and colonized at rhizosphere of apples; and successive cropping obstacle of an apple seedling caused by accumulation of phlorizin can be effectively preventedby utilizing the bacterial strain, so that the rhizobium provided by the invention has good prospect of being developed into a microbiological inoculants or bacterial fertilizer capable of promotingcrop growth.

The invention discloses an accurate comparison method for delta front sedimentary strata bottom surfaces at the same elevation. The accurate comparison method comprises the following steps: defining a plurality of isochronous surfaces in a delta front sedimentary strata section; analyzing the elevations of a single sand body bottom surface and the nearest isochronous surface under the control of the sedimentary compensation principle, and determining that sand bodies are the same or deposited contemporaneously if the elevations are the same; carrying out closed examination and planar examination. According to the method, the strata time of the single sand body level can be determined scientifically and reasonably; the division can be more accurate; the comparison result fits an underground geological condition better; the guiding significances in petroleum reservoir exploitation and recovery efficiency improvement are high.

The invention discloses a mechanical water direct sowing culture method for rice in slight alkaline land in the Yellow River Delta. The method comprises the steps of variety selection, land preparation, sowing, water management, fertilization, weeding and disease and pest control. Before sowing, rice seeds are soaked for accelerating germination till revealing; sowing is conducted when the average temperature is at 12 DEG C or above stably in May; it is required that the soil salinity is below 3%o; a 5-10-cm water layer is built in a field in the sowing process, and the root systems of reeds are fished and removed after irrigation; a mechanical broadcast sower is used for broadcast sowing, and the sowing quantity is 12-13 kg/mu; after sowing and before emergence of seedlings, the 5-10-cm water layer is kept; after emergence of seedlings, water is drained immediately. The method is directed to medium and slight alkaline land; compared with an existing mechanical dry direct sowing culture method for rice, the requirement for salt and alkali is low, time and labor are saved, and meanwhile, the method has a higher yield increase advantage and has great significance in alkaline land improvement, agricultural production efficiency improvement and food crop yield increase.

The invention discloses an ecological producing method of traditional Chinese medicines in saline-alkali soil of the yellow river delta. The method includes the steps of preparing dais and low ridge in saline-alkali soil of the yellow river delta, covering the dais with degradable waterproof black mulch, covering low ridge with garden black ground fabric, sowing (transplanting) traditional Chinese medicines and making all soil except for the traditional Chinese medicines covered so that the aims of restraining weed growth and resisting saline and alkali can be achieved through light shielding, soil moisture preservation and water retention under the black mulch (black ground fabric). According to the characteristics of complementation of medicinal parts, light requirement characteristics, plant height spaces, water and fertilizer characteristics and salt resistance characteristics, different traditional Chinese medicines are planted on dais and low ridge for ecological community construction. High-quality organic fertilizer is adopted as base fertilizer, no chemical fertilizer is applied, and pesticide applying, topdressing, irrigating and weeding are generally not needed in the whole planting process. By means of the producing method, the aims of increasing the yield of the traditional Chinese medicines and improving saline-alkali soil of the yellow river delta can be achieved.

The invention discloses a novel high-yield, light and simplified strong-gluten-wheat cultivation technology adopted in a yellow river delta region and aims at improving the strong-gluten-wheat production capacity of salinity soil in the yellow river delta region, increasing grain yield, saving precious water resources, promoting usage amount decrease and effect improvement of chemical fertilizers and pesticides, promoting implementation of a Bohai seagranaryscience and technology demonstration engineering and guaranteeing domestic food safety. According to salinity soilcharacteristics, hydrological weather and other natural conditions in the yellow river delta region, and scientific irrigation, salt improvement and alkali suppression based on bio-organic fertilizers, deep ploughing and sowing, nitrogen fertilizer postponing and seaweed active substances are integrated to improve a stress resistance and yield increasing technology, a scientific microelement proportioning technology and the like, and a systematized, roll-reproductive yellow river delta high-quality, high-yield, light and simplified strong-gluten-wheat cultivation technology system is established. The technology creatively applies biogas slurry to wheat grain yield increase and irrigation, uses bio-organic fertilizers to replace traditional fertilizers, uses chitosan and the like to replace traditional pesticides and is remarkable in usage amount decease and effect improving effect.