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 delta sand body internal structure analysis method based on overlapped lobes. The method includes the following steps that firstly, data are collected; secondly, a top interface and a bottom interface of a layer are determined; thirdly, the interface characteristics of the lobes are determined by analyzing the lithological and electrical characteristics of lobe boundaries, and the lobe boundaries are determined; fourthly, reservoir internal structure characteristics are recognized through bottom leveling, and the mutual relation between the lobes is preliminarily analyzed; fifthly, based on recognition of the lobes, the lobes are divided into a composite lobe level and a single lobe level, the corresponding relation between the lobes is analyzed, the relation between the lobes is determined, comparison analysis is conducted on the distribution characteristics of the lobes on a section, and interwell distribution of the lobes is determined; sixthly, the plane distribution range and the distribution shape of the lobes are determined; seventhly, the reservoir structure is verified. By the adoption of the method, a delta sand body internal structure is accurately described, reliability and practicality are high, a new thought is provided for understanding of anisotropy of reservoirs, and the method can be widely applied to the technical field of exploitation and development of oil and gas.

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 discloses a reservoir dredging pipe system and a layout method of the reservoir dredging pipe system, belonging to the technical field of a water conservancy project. The reservoir dredging pipe system is characterized in that a preventive dredging pipe system and a restorative dredging pipe system are arranged according to different stages and shapes of reservoir sedimentation, wherein the preventive dredging pipe system is composed of main pipelines and a branch pipe bank and is arranged before the water is stored in a reservoir; the main pipelines are arranged on both sides of the river; a downstream end is connected with a culvert pipe under a dam; the branch pipe bank is transversely arranged on a water return section forming a delta; the branch pipe bank is uniformly distributed with sand discharge holes to intercept discharge of sediment on a delta scarp slop and prevent the delta from advancing; a restorative dredging pipe is arranged in the reservoir for forming deposit and is composed of the main pipelines which penetrate the deposit area, and of which the downstream end is connected with the culvert pipe under the dam or an underwater tunnel, branch pipes transversely connected to the main pipelines, and a tube connected to the branch pipes; the tube opening and a sand suction hole move to dredging, and a dredging area is covered; an underwater dredging pipeline system is prefabricated by segments on land and in towing floating connection; a water dredging pipeline system is arranged in a pipe ditch on the deposit surface, and sinks to the bottom of the reservoir and the bottom of ditch to dredge after being filled with water and exhauste, and the storage capacity of the reservoir is restored.

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 novel technology for high-yield cultivation of drought resistance maize in the yellow river delta region. The production capacity of salination soil in the yellow river delta region is improved, the grain yield is improved, implementation of science and technology demonstration engineering of a grain elevator in the Bohai Sea is promoted, and the food security in China is ensured. On the basis of characteristics of salination soil in the yellow river delta region, hydrological climate and other national conditions, scientific irrigation, straw salt restraining, biological organic fertilizer salt modification and alkali restraining, deep ploughing seeding, nitrogen fertilizer postponing, the stress resistance and yield increasing technology through alga active substances, microelement scientific matching technology are integrated, and the systematized yellow river delta high-quality maize yield increasing cultivation technology system capable of achieving rolling reproduction is constructed, biogas slurry is creatively used for maize grain yield increasing irrigation, straw coverage is adopted for salt restraining and alkali modification, water for irrigation is saved, and the water saving effect is remarkable.

The invention relates to a Yellow River delta heavy chloride saline soil maize-cotton-sorghum intercropping efficient planting manner. The Yellow River delta heavy chloride saline soil maize-cotton-sorghum intercropping efficient planting manner can protect against wind, reduce salt, combine utilization and fertility improvement and simplify the entire process. The Yellow River delta heavy chloride saline soil maize-cotton-sorghum intercropping efficient planting manner comprises, during spring sowing, planting 6-8 rows of maize in the north of parcels and interplanting cotton and sorghum which are high in salt tolerance, wherein the number of planting ridges of the cotton and sorghum meets the harvesting conditions of cotton pickers and sorghum harvesters; after alkali is decreased through flooding, taking full advantage of the feature of high growth speed of mulched maize and establishing a maize wind protecting belt in the north; mulch-planting sorghum species similar in height to cotton plants to establish a sorghum wind slowing belt in fields in a direction perpendicular to wind. The Yellow River delta heavy chloride saline soil maize-cotton-sorghum intercropping efficient planting manner can reduce canopy evaporation of water of crops as well as water consumption of fields in early spring and promote early germination, early seedling setting, early budding and early boll setting of the cotton.

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 discloses a method for in-situ restoration of a saline-alkali land ecosystem in the Yellow River delta by using triarrhena lutarioriparia and biochar, and belongs to the technical fieldof saline-alkali land improvement. According to the addition of the biochar, specifically, calculation is conducted according to the soil pH, the salt content and the soil property, the soil pH of coastal salt-alkali land of the Yellow River delta is 8.5, the salt content is 0.75%, the soil is sandy clay loam in property, the content of organic matter is low, and the application amount of the biochar is 2-4% of the weight of the soil. An application method comprises the steps that (1) the land is leveled; (2) the specific addition amount of the biochar is calculated according to the soil density and planting depth of an improvement site, the specific addition amount of the biochar is 2-4% of the weight of the soil, and a calculation method for the weight of the soil is that the weight of the soil is equal to a product of the surface area of the improvement site, the planting depth and the soil density; (3) a calculated amount of biochar is evenly laid on the surface of the soil, and soil turning and even mixing are conducted; (4) aging is conducted for three days after even mixing, and miscanthus of triarrhena lutarioriparia can be planted. By means of the technical scheme, the in-situ restoration of the saline-alkali land ecosystem in a coastal area of the Yellow River delta can be achieved, physiochemical characteristics and biocenosis structures of the soil of the restored saline-alkali land are greatly changed, and the restored saline-alkali land is suitable for the survival and normal growth of miscanthus.

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 belongs to the technical field of agricultural production and particularly relates to a method for summer corn salt-controlled yield increase in light and moderate saline-alkali soil of the Yellow River Delta. According to the method, a summer corn fertilizer application amount and operation method, an irrigation amount and a salt-controlled yield increase water and fertilizer operation method for a corresponding irrigation principle and method are formulated according to on-site soil saline-alkali, soil fertility and climate and summer corn growth conditions in light and moderate saline-alkali soil of the Yellow River Delta. The method comprises the following steps: (1) land preparation seeding and seedling stage and jointing stage water and fertilizer operations; (2) jointing and tasseling stage water and fertilizer operations; and (3) tasseling and filling stage water and fertilizer operations. According to the method, by reasonable operations of water and fertilizer, salt adjustment and salt control, soil improvement and fertilizer supply, seedling protection and strong seedling cultivation, growth promotion and yield increase can be performed on summer corns planted in the light and moderate saline-alkali soil of the Yellow River Delta. The method has the advantages of being simple and practical, reducing cost, increasing benefit and being high in applicability and easy to popularize. The method has remarkable economic, ecological and social benefit if popularized and applied in large area in summer corn planting areas of the light and moderate saline-alkali soil of the Yellow River Delta area.

The invention provides a method for identifying a main transform plane of delta construction and destruction. Identification is carried out from perspectives of lithology, sand body types, sedimentary tectonics, paleontology, and geophysics and a precise position of a key transform plane of delta construction and destruction is determined. The method is characterized in that a main transform plane of delta construction and destruction is put forward firstly; and the sedimentary period of the delta is divided into a delta construction period and a delta destruction period based on the delta sedimentary effect for the first time. On the basis of the core, welllogging, logging, and seismic data, precision improvement is realized step by step; the position of the main transform plane of delta construction and destruction is determined comprehensively; and the data reliability and precision are high.

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 a method for quantitative calculation of a water body depth of a basin in a deposition stage through a field outcrop profile. The field outcrop profile is a profile exposed out of the earth's surface after a deposition stratum of the basin in a geological historical period is subjected to a bedding effect, a diagenesis effect, an architecture uplifting effect and a denudation effect. The method comprises the following steps: 1, a delta progradational reflection structure in the field outcrop profile is sought, and a top interface and a bottom interface are calibrated; 2, elevations corresponding to the top interface and the bottom interface are recorded; 3, an average thickness h1 of sandstone and an average thickness h2 of mudstone in a foreset bed of the outcrop profile are counted; 4, compaction rate K1 of the sandstone and a compaction rate K2 of the mudstone are respectively solved by use of an experiment method; and 5, before a compaction effect takes place, a thickness h10 of the sandstone h10=h1 / (1-K1), a thickness h20 of the mudstone h20=h2 / (1-K2), and a total stratum thickness h0 before compaction h0=h10+h20, i.e., the maximum paleo-water depth h of the basin is greater than or equal to h0. According to the invention, the maximum paleo-water depth of the basin in the geological historical period can be quantitatively recovered, and the calculation result is real and reliable and is of uniqueness.

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 sea cucumber spring and summer culture method. The sea cucumber spring and summer culture method aims at avoiding the aestivation risk of sea cucumbers and greatly improving the aestivation safety of the sea cucumbers through improvement of four aspects comprising eight steps. The four aspects comprise performing ecological environment regulation on a culture pond; adopting a relay type cultivation mode; constructing the step type pond; cultivating seedlings in batches. According to the sea cucumber spring and summer culture method, the related technology research is performed due to main restricting factors that the water temperature is high, the salinity is low, the water quality is poor, the oxygen deficiency of the bottom is easy to cause, and the like caused by the summer climate according to the area self-characteristics of the stichopus pond cultivation of the yellow river delta, the problem of the aestivation of the stichopus pond cultivation of the yellow river delta is majorly solved, the systematic technical support is provided for the aestivation of the sea cucumbers, and accordingly the healthy sustainable development of the stichopus pond cultivation industry of the yellow river delta is ensured.

The invention discloses an inversion method for soil salinity of a Yellow River delta based on Landsat8. The inversion method comprises the following specific steps: S1, collecting and acquiring soilsalinity data; S2, acquiring and processing remote sensing image data; S3, extracting and calculating reflectivity data of each wave band of the Landsat8 OLI image; S4, after carrying out corresponding 1g (R) and 1 / R change on each waveband, respectively carrying out correlation analysis on the reflectivity of remote sensing and the converted reflectivity of remote sensing and the salt content ofsoil, and preliminarily screening sensitive wavebands; S5, performing multiple linear regression analysis on the 1 / R, 1g (R) of the reflectivity of each waveband and the salt content of the soil obtained in the step S1, and establishing a regression model; and S6, applying the established optimal prediction model to the Landsat8 remote sensing image of the research area to obtain a Landsat8 soil salinity content remote sensing inversion graph. According to the method, the inversion model is used for inverting the soil salt content and carrying out descriptive statistical analysis, the soil salt content is compared with the actually-measured soil salt content, it is found that the salt content is basically consistent, and it shows that the inversion model is high in precision and good in stability.

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.