6 results about "Crop residue" patented technology

A vegetal concrete masonry unit and method and system for manufacturing thereof are disclosed. The masonry unit comprises treated crop residues (e.g., paddy straw, wheat straw, bagasse), a binder of hydrated lime, ground granulated blast furnace slag (GGBFS), and low-content alkali activator (2.5-20% by mass), and aggregates in a mass ratio of 1:0.1:1.5 to 1:5:5, achieving compressive strengths of 2-20 MPa and densities of 950-1900 kg / m3. The method involves alkali-treating residues at 0.1-10M NaOH for 15-1500 minutes, passing through a screw press, mixing with binder and aggregates to form C-A-S-H and N-A-S-H gels, and high-pressure molding (2-10 MPa). The system includes silos, a retention tank / screw press, pan mixer, and hydraulic press. This sustainable bio-composite utilizes agricultural / industrial wastes, reduces emissions by 80%, is energy efficient, enhances compatibility and mechanical performance, and provides thermal insulation for eco-friendly building blocks and panels.

This invention provides a method for preparing an iron-silicon composite organic fertilizer using acid-activated iron tailings. The method involves crushing high-silicon iron tailings through a 200-mesh sieve, mixing it with an acid activator composed of citric acid and oxalic acid in a specific ratio, aging it in water for 25-30 days, and then drying it to obtain acid-activated iron tailings. This is then mixed with livestock manure (20-45 parts), crop residues (15-40 parts), microbial agents (1-2 parts), and water (10-30 parts), and composted in windrows for 40-50 days before drying to obtain the finished organic fertilizer. This process is simple, low-cost, and energy-efficient, realizing the resource utilization of iron tailings solid waste. The resulting fertilizer is rich in soluble silicon and iron, can complex with humic acid, and is suitable for silicon-loving, acid-loving, and iron-loving crops. It promotes growth, increases yield, and improves quality, and can be used as a base fertilizer or top dressing.

This utility model provides a biological interception and purification combination device for ecological drainage ditches in high-standard farmland, relating to the field of high-standard farmland. It includes a biological purification frame, columns, and guide rods. The outer surface of the columns is slidably connected to a interception groove, and the upper surface of the interception groove is hinged to a pull rod. The left and right ends of the guide rods are welded with beams, and the left and right sides of the beams are provided with through holes. A bidirectional threaded rod is rotatably connected within the through holes of the beams. The biological purification frame includes a planting cylinder and an installation support plate. The installation support plate is screwed onto the outer surface of the planting cylinder. Through the interception groove, planting cylinder, and installation support plate, the device prevents crop residues and branches from flowing into the roots of aquatic plants in the planting cylinder, thus avoiding drainage blockage. This facilitates the rapid replacement and cultivation of aquatic plants, solving the problems of drainage blockage caused by the accumulation of crop residues and branches between the roots of aquatic plants in traditional drainage ditches, as well as the inconvenience of replacing and cultivating dead aquatic plants.

The application provides a kind of net zero energy consumption organic stereo farm system and method based on multi-energy coupling, which realizes the synergistic optimization of carbon cycle, energy cycle and nutrient solution cycle through digital twin modeling, spectral sensing prediction, crop-algae coupling scheduling, crop residue energy recovery and multi-loop closed-loop control.The method comprises: collecting environmental, crop and energy consumption multi-modal data and standardizing modeling;Construct a carbon dioxide priority scheduling model to link crop respiration and algal photosynthesis, achieve carbon-oxygen cycle balance;Anaerobic fermentation of crop residues produces biogas and is converted into electrical energy, and the fermentation liquid is returned to the nutrient solution unit, achieving energy and nutrient reuse;Based on multi-modal sensing of spectrum and gas exchange, combined with LSTM prediction and Kalman filter correction, dynamically output light and fertilizer control instructions;Through the hybrid matrix and genetic algorithm optimization colony resource allocation, maintain metabolic stability.

The present invention is an improvement for a coulter blade for a harvester header attachment designed to slice crop residue and till soil as a harvester is harvesting a field of crops. As a harvester moves through a field of crops, the harvester header attachment's coulter blade spins on a bearing and cuts into the crop's stalks, leaves, and root balls, tilling the standing crop residue. The present invention adds a series of fins to the coulter blade, either directly or on an attachment to the coulter blade, such that the footprint of the blade is larger, allowing it to perform those functions even if not lined up perfectly with a crop row.

The present application relates to a kind of machines for treating combustible materials on the ground by incineration, in particular crop harvesting residues, especially machines for incineration of crop residues in the field, belonging to the field of agricultural machinery.The present application is a machine for incinerating combustible materials on the ground while moving, which essentially provides a movable combustor using ground scattered combustible materials as fuel, and collects the combustible materials on the ground into the combustion chamber of the combustor through the feed inlet and the fork grid structure.The combustor realizes efficient incineration of the combustible materials passed by while moving, and reduces the emission of smoke and dust.