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122 results about "Soil composition" patented technology

Soil Composition Across the U.S. Soil is the sum of its parts. The most basic ingredients include sand, silt, and clay of various particle sizes, as well as rock fragments, roots, live organisms, air, and water. But depending on your location, the proportion of those ingredients can vary dramatically.

Large-scale multifunctional frozen soil-composition contact surface cycle direct shear apparatus and test operation method

The invention is a large multifunctional frozen soil-structure interface cyclic direct shear apparatus and a test operation method. The structure of the apparatus comprises a horizontal and vertical loading system, a horizontal and vertical displacement and a load sensor, a temperature control and refrigeration system, a temperature sensor, a data collecting and self-stabilizing system, a guide rail system, and a soil sample box and supports. The test operation method comprises the steps of: 1. Installing the interface steel of required roughness; 2. Applying normal boundary conditions to a soil sample; 3. Cooling the soil sample; and 4. When the temperature cools to a target temperature, performing a shearing to the frozen soil interface in a selected shearing speed, at the same time the date collecting system beginning to record the stress-strain relation of the frozen soil interface. The apparatus and the method are the advantageous in that: 1) accurate control of the interface temperature in the temperature range between 0 DEG C and -20 DGE C can be achieved; 2) three normal boundary conditions of constant stiffness, constant displacement and constant stress can be accurately applied; 3) interfaces of various roughness can be simulated; 4) two shear modes of cyclic shear and monotonic shear can be realized; and 5) the stress applying and displacement control are accurate.
Owner:NANJING FORESTRY UNIV

Preparation method of cultivation substrate used for three-dimensional afforesting

InactiveCN102746042AHigh organic contentMeet the requirements of carbon and nitrogen ratioBio-organic fraction processingOrganic fertiliser preparationForest industrySludge
The invention relates to a preparation method of a cultivation substrate used for three-dimensional afforesting. The method comprises the steps of: first, crushing plant waste to particles of 2cm; then adding sewage sludge or animal manure in an amount of 5-30% by weight, based on the weight of the plant waste; mixing the plant waste and the animal manure and piling the mixture to be piles with a height of 0.60m-1.5m, and volume of no less than 2 cubic meters; compost maturing the mixture for 20-40 days to obtain a compost product with water content less than 38%; and according to the requirements of national forestry standard 'organic media for greening use', based on the weight of the compost product, adding 0-0.5% humic acid and/or 0-20% perlite, and/or 0-0.5% polyacrylamide to obtain the cultivation substrate which meets the cultivation substrate requirements in the national forestry standard 'organic media for greening use' (LY/T1970-2011) issued in 2011. The method promotes the recycling of waste, and the cultivation substrate has great social, economical and ecological benefits and can replace nature soil for planting. The cultivation substrate can especially satisfy the requirements of roof, suspension, verticality, etc. three-dimensional afforesting for soil fertility, soil composition and water retention and fertilizer conservation.
Owner:SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING

Quantitative liquid fetching device and use method thereof

The invention discloses a quantitative liquid fetching device. The quantitative liquid fetching device comprises a liquid fetching device suction tube, wherein the upper end of the liquid fetching device suction tube is inserted into an overflow liquid vessel, the volume of a tube cavity of the liquid fetching device suction tube is matched with a target fetched liquid volume value, and the overflow liquid vessel is provided with a negative pressure generating device which can enable the interior of the overflow liquid vessel to be in negative pressure, and a pressure relief opening which can enable the negative pressure inside the overflow liquid vessel to disappear. According to a method disclosed by the invention, accurate liquid fetching can be carried out without setting accurate negative pressure, so that the selection of the negative pressure generating device is diverse, and the cost is relatively low. The quantitative liquid fetching device disclosed by the invention is particularly suitable for being applied to soil composition testing experiments. According to the method disclosed by the invention, the accurate liquid fetching can be carried out without setting the accurate negative pressure, so that the selection of the negative pressure generating device is diverse, and the cost is relatively low. The quantitative liquid fetching device has the advantages that the structure is simple, the cost is low, the high-accuracy quantitative liquid fetching is realized in the case that users have no need of observing scales of the liquid fetching device, and the cooperation with an automatic device is facilitated.
Owner:NANJING COMM INST OF TECH

Novel soil equivalent resistance model modeling method

The invention discloses a soil equivalent resistance model modeling method in combination of repeated multipoint actual measured data of a power grid and simulation modeling calculation. The method ischaracterized in that an existing soil equivalent resistance model construction method is improved by use of a mixed modeling method in combination of the actual measured data and the simulation modeling calculation; repeated multipoint measurements are performed on an alternating-current power grid by changing a topological structure of the alternating-current power grid, that is, sequentially switching off any return circuit of alternating current circuits between two transformer substations with direct electrical contact in a modeling range to obtain multiple groups of direct current distribution data of a main transformer neutrality point of each transformer substation in the modeling range; and a soil equivalent resistance model is constructed by simulating calculation and inversionmeans. According to the soil equivalent resistance model modeling method, detailed soil parameters are unnecessary to collect, the calculation accuracy degree is high, the problem that a non-uniform layered soil model is difficult to establish accurately in previous methods is overcome, and the method is suitable for accurate calculation of distribution of direct currents in an alternating currentsystem in the case of complex soil compositions.
Owner:SICHUAN UNIV

Coast salinized soil improvement method improving plough layer soil nitrogen immobilization capability

InactiveCN105960877AImprove physical and chemical propertiesImprove nitrogen sequestration capacitySoil-working methodsMicroorganismSoil science
The invention discloses a coast salinized soil improvement method improving plough layer soil nitrogen immobilization capability; the method comprises the following steps: laying subsurface pipes, washing, ploughing soil, pre-applying soil composition conditioning agent, applying organic-inorganic composite fertilizer, supplementing bacterium source, and dry spreading a soil amendment in a fallow period. The coast salinized soil is large in salt content, high in soil hardening level, and severe in nitrogen nutrient loss in leaching; the novel method considers these problems, organically couples soil improving physical, chemical and biological means, thus developing the coast salinized soil improvement technology and application method thereof that improves salinized soil nitrogen immobilization capability and salinized soil physical and chemical properties; subsurface pipe drainage and organic-inorganic composite fertilizer are combined; soil composition conditioning agent and soil amendment are respectively applied before cultivation and in the fallow period; microbe inocula is supplemented after base fertilizer and additional fertilizer, thus greatly improving plough layer salinized soil nitrogen immobilization capability, and improving salinized soil physical and chemical properties.
Owner:FUJIAN AGRI & FORESTRY UNIV

Series flower peanuts, cultivation of series tour spectacle flower peanuts and natural crossing cultivation method

The invention discloses cultivation of series tour spectacle 'flower peanuts' and a natural crossing cultivation method which are invented by Li Xianming from Sichuan Province Shehong Xianming Agriculture High-tech Research Institute. The method comprises the following steps of: mixing coal slack, white mud and silty loam to obtain the mixture serving as a culture base; mixing five-taste sausages, dried cypress leaves and rape seed oil cakes, grinding the mixture, and adding the mixture serving as base fertilizer into trace element fertilizer; and selecting one or more of Fuhua No. 8, Tianfu No3 and Tianfu No.8 peanuts and four-seeds red peanuts, which are used as parents, for cross breeding, and selecting the varieties of white flower peanuts with flower skin, of which the skin has lightwhite lines, eggplant-colored lines and light blue lines which are distributed at intervals, and beautiful flower peanuts with flower skin, of which the skin has light yellow lines and eggplant-colored lines which are distributed at intervals, and making the secondary natural crossing cultivation of the selected varieties and the selenium-enriched black peanuts to obtain the finished product. Themethod changes the soil composition of the breeding base used in the conventional methods, provides sufficient nutrition sources for the growth of the flower peanuts, contributes to the culture and the strong cultivation of the flower peanuts and make the filial generations have more stable properties; moreover, the protein content of the flower peanuts is 1.2 times higher than that of common peanuts, and the flower peanuts are particularly ornamental, have the effects of health care and diet therapy, can improve immunity, resist cancers and soften blood vessels, and have a quite important physiological resistant action in disease prevention.
Owner:李先明

Controlled-release compound fertilizer rich in various mineral substances and production process thereof

InactiveCN107311804AImprove adsorption capacityTo achieve the effect of maintaining fertilizer and saving fertilizerCalcareous fertilisersExcrement fertilisersNutritionManganese
The invention discloses a controlled-release compound fertilizer rich in various mineral substances and relates to the field of fertilizers. The controlled-release compound fertilizer comprises the following raw materials in parts by weight: 55-70 parts of attapulgite clay, 10-15 parts of crop straw, 10-15 parts of livestock and poultry manure, 5-10 parts of edible fungi residues and 4-8 parts of a soil conditioner. The invention further discloses a production process of the compound fertilizer. According to the compound fertilizer, attapulgite clay is preferred as the main ingredient, and is rich in more than twenty micro-elements including silicon, potassium, calcium, sulfur, iron, magnesium, manganese, iodine, selenium and the like, strong in adsorptivity and good in sustained and controlled release property; and a certain quantity of an organic material is also added into the compound fertilizer to provide enough nutrition for crop production, meanwhile, to condition soil, and to help to improve and optimize soil compositions, so that a favorable ecosystem is maintained, less environmental pollution is caused, environmental friendliness and energy saving are achieved, and the cost is low.
Owner:GANSU HAOZHOU FERTILIZER
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