10 results about "Crop biomass" patented technology

The invention discloses a method for reducing emission of nitrous oxide (N2O) in farmland soil based on synergistic fertilization of bacillus amyloliquefaciens EBL11, and belongs to the technical field of agricultural environment treatment. Aiming at the problems of high cost, high environmental risk, poor stability and the like in the existing N2O emission reduction technology, the bacillus amyloliquefaciens EBL11 is cooperatively applied with a fertilizer in a solid microbial inoculum form, so that the N2O emission of the farmland is remarkably reduced. The method is characterized by comprising the following steps: (1) synergistically applying a compound fertilizer and a fungicide; (2) synergistically applying an organic fertilizer and a fungicide; and (3) mixing the microbial inoculum and the fertilizer, uniformly spreading the mixture to the soil, and combining intermittent irrigation and repeated quadrat monitoring management. Experiments show that the method can reduce the N2O emission rate of the paddy field by 131.2%-215.4% within one week, soil is converted into an absorption state from emission, and meanwhile, the biomass of crops such as oilseed rape is increased. The method has the characteristics of high efficiency, emission reduction, low cost and environmental friendliness, and is suitable for large-scale popularization in farmlands such as paddy fields and rape fields.

The invention discloses a phosphoric acid modified wheat straw biochar-based slow-release cluster bacterial fertilizer and a preparation method and application thereof.The method comprises the steps that wheat straw serves as a raw material, and phosphoric acid modified biochar (PWBC) with rich oxygen-containing functional groups and a multi-stage pore structure is prepared through phosphoric acid activation and programmed pyrolysis; then taking a granular nitrogen fertilizer as a core, constructing a PWBC coating layer by utilizing a fluidized bed spraying process, inoculating arbuscular mycorrhizal fungi (AMF) spores through low-pressure spraying, and finally, forming PWBC-AMF through secondary encapsulation of sodium alginate. According to the invention, a physical shelter is provided for AMF by using a pore structure of PWBC, and organic fusion of long-acting accurate release of nutrients (the slow release period is greater than or equal to 60 days) and high-power keep-alive of strains is realized. When the method is applied to a pakchoi-radish intercropping planting mode, rhizosphere micro-ecology can be remarkably optimized, interspecific nutrient competition can be relieved, crop biomass can be improved, farmland nitrous oxide emission can be cooperatively reduced, and a scientific scheme is provided for reduction and synergism of chemical fertilizer.

The application discloses a method and integrated system for reducing carbon dioxide emission by using tenebrio molitor matrix fermentation, and the steps of the method comprise the following steps: putting tenebrio molitor in crop biomass for pretreatment to obtain a pile; stacking the pile and then carrying out fermentation; applying the generated carbon dioxide as gas fertilizer during the fermentation process; and using the fermented pile as a cultivation substrate. The method introduces tenebrio molitor into a crop biomass fermentation system, which can not only effectively degrade straw and realize agricultural waste resource utilization, but also significantly reduce the CO2 emission during the fermentation process. The integrated system based on the method couples crop biomass fermentation with greenhouse planting, recycles the generated CO2 as a carbon source for photosynthesis, and can regulate the CO2 supply according to the crop growth demand, thereby further realizing secondary CO2 emission reduction, effectively promoting crop growth, and constructing a low-carbon, high-efficiency and closed-loop ecological agricultural mode, which has significant environmental benefits, resource utilization benefits and production benefits.

The application discloses a biodegradable coated urea added with zirconium-based MOF nanocrystals with phosphatase activity and a preparation method and application thereof, and belongs to the technical field of fertilizers. The zirconium-based MOF nanocrystals with phosphatase activity are prepared, a solution of the zirconium-based MOF nanocrystals is mixed with urea and dried, polypropylene carbonate is used as a coating material, and then the biodegradable coated urea added with the zirconium-based MOF nanocrystals with phosphatase activity is prepared through a fluidized bed solvent method. The coated urea prepared in the application can realize nitrogen control release, hydrolyze soil organic phosphorus through the phosphatase activity of the Zr-MOF nanocrystals, realize the dual functions of continuous supply of nitrogen and in-situ activation of soil phosphorus, simultaneously meet the demand of crops for two core nutrient elements of nitrogen and phosphorus, significantly relieve the low-phosphorus stress of crops, promote the growth of the root system and the aboveground part of crops, and improve the biomass of crops.

This invention discloses the rice nitrogen-efficient utilization gene OsNAC15, its encoded protein, and its applications, belonging to the field of molecular breeding technology. This invention is the first to disclose the role of the OsNAC15 gene in the efficient nitrogen utilization of rice. Overexpression of the rice OsNAC15 gene significantly improves the nitrogen use efficiency and yield of the plant, while mutation of the OsNAC15 gene significantly reduces the nitrogen use efficiency and yield. Mutations and / or overexpressions of the OsNAC15 gene do not result in normal plant development. By precisely regulating the expression level of this gene, the nitrogen nutrient utilization rate of rice can be controlled, thereby increasing crop biomass and yield, and reducing environmental pollution. This has broad application prospects in the agricultural field, especially in the breeding of crop varieties that can efficiently absorb and utilize nitrogen fertilizer, such as rice, corn, wheat, soybeans, cotton, and rapeseed. Its widespread application is expected to lead to more environmentally friendly and efficient agricultural production, providing strong scientific and technological support for solving global food security and environmental protection challenges.

The invention provides an artificial reclamation plant carbon sequestration quantification method and system, and relates to the technical field of carbon sequestration amount calculation.The method comprises the steps that a reclamation area is divided into a plurality of areas, the divided areas are divided into a center area and other areas, and the instantaneous photosynthetic efficiency of the center area on the same day is obtained to calculate the carbon sequestration amount of the center area on the same day; acquiring remote sensing data of each region on the same day, and determining the reclaimed crop biomass increment of each region on the same day based on the remote sensing data; acquiring soil data of each region and the reclaimed crop biomass increment of each region in the previous day, and setting a biomass increment judgment rule and a biomass increment adjustment rule based on the increment; adjusting the biomass increment of each region based on the rule to obtain a corresponding final biomass increment; and estimating the carbon sequestration amount of other areas by combining the final biomass increment of the reclamation crops of the central area and other areas on the same day and the carbon sequestration amount of the central area on the same day.

The present application belongs to the technical field of bioengineering. The present application discloses a bacillus pumilus 21-14, the strain has been preserved in the China General Microbiological Culture Collection Center (CGMCC) on September 6, 2024, the center is abbreviated as CGMCC, the strain preservation center registration number is CGMCC NO.31892, the strain preservation date is September 6, 2024, and the address of the preservation unit is No.3, Beichen West Road, Chaoyang District, Beijing. The bacillus pumilus strain 21-14 provided by the present application is simple to culture, short in cycle, free of ecological toxicity, rich in types of available carbon sources, strong in salt and alkali tolerance, capable of promoting the growth and development of potatoes through phosphorus solubilization and IAA production, beneficial to promoting the improvement of the biomass of crops in saline-alkali soil, and capable of effectively inhibiting the growth of streptomyces prolixus.

The application discloses a farmland crop type fine identification method based on time sequence remote sensing images and relates to the technical field of farmland crop type identification. Time sequence remote sensing images and geological environment monitoring data of a whole growth cycle of a region to be identified are acquired, and a multi-modal heterogeneous input tensor is constructed. Through a double-flow channel of an orthogonal decoupling convolution coding network, crop biomass feature components and geological background feature components are separated and extracted. The components are taken as joint input to a differentiable logic reasoning identification model. A global utility function with the maximum classification confidence, feature orthogonality and physical constraint satisfaction degree as the target is defined, a gradient ascent method is used to iteratively optimize the logic node parameters of the model, and the optimal decision path distribution is output until convergence. In combination with the safety margin of the physical constraint boundary, a crop-environment adaptation analysis index is calculated, and high-precision and interpretable crop type identification is realized. The application improves the identification accuracy and decision transparency through feature decoupling and physical logic fusion.

The invention discloses a tilled land crop type fine identification method based on a time sequence remote sensing image, and relates to the technical field of tilled land crop type identification. Obtaining a time sequence remote sensing image and geological environment monitoring data of the whole growth cycle of the to-be-identified region, and constructing a multi-modal heterogeneous input tensor; separating and extracting a crop biomass characteristic component and a geological background characteristic component through a double-flow channel of an orthogonal decoupling convolutional coding network; inputting the data as a combination into a micrologic reasoning recognition model; defining a global utility function aiming at maximizing classification confidence, feature orthogonality and physical constraint satisfaction degree, and iteratively optimizing model logic node parameters by adopting a gradient ascending method until convergence and outputting optimal decision path distribution; and the safety margin of the physical constraint boundary is combined, a crop-environment adaptation analysis index is calculated, and high-precision and interpretable crop type identification is realized. According to the invention, through feature decoupling and physical logic fusion, the recognition accuracy and decision transparency are improved.

The invention discloses a storage device for hydrogen production from crop biomass, and relates to the technical field of hydrogen storage, the storage device comprises a tank body, two ends of the tank body are respectively connected with a liquid outlet and a gas inlet, and the interior of the tank body is divided into a degassing cavity, a buffer cavity and a gas filling cavity by a plurality of sealing plates from top to bottom; a degassing pipe is arranged on one side of the degassing cavity, a plurality of hollow fiber membrane wires are uniformly distributed on the inner side of the degassing cavity in the axial direction of the tank body, and the buffer cavity is communicated with the liquid outlet through the hollow fiber membrane wires; a plurality of catalysis blocks are vertically arranged on the inner side of the gas filling cavity, gas conveying channels are vertically formed in the catalysis blocks and communicate with the gas inlet, liquid conveying channels are horizontally formed in the catalysis blocks, and the multiple catalysis blocks are divided by baffle plates to form S-shaped liquid flow channels. The storage device for hydrogen production from crop biomass is high in hydrogenation reaction efficiency and high in safety.