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49 results about "Management zones" patented technology

Soil layering characteristic acquiring method and application

The invention discloses a soil layering characteristic acquiring method and an application and belongs to the technical field of agricultural irrigation. The method comprises the steps as follows: the depth of a crop root system main distribution layer is determined according to the type of to-be-planted crops in a farmland management area; sampling points are set in the management area and irrigated, so that the soil at the depth of the crop root system main distribution layer absorbs water to be saturated; the deep layer seepage of soil below the crop root system main distribution layer is acquired, and when the deep layer seepage approximates the threshold, the soil moisture contents of the sampling points at different depth layers are measured; the soil texture of the sampling points at different depth layers is acquired and the soil layering characteristic of the management area is obtained. The layering characteristic of the vertical section of soil has obvious influences on soil moisture movement, the burying positions of soil moisture sensors can be more effectively determined if the layering characteristic is considered, and the layering characteristic has great significance in guiding farmland irrigation efficiently.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Smart agricultural management method based on cloud computing and management platform

The invention relates to a smart agricultural management method based on cloud computing and a management platform and belongs to the technical field of smart agriculture. The method comprises the steps that multiple greenhouses are divided into multiple management zones according to partitioning strategies, each management zone is composed of 2-20 adjacent greenhouses; each greenhouse is providedwith an execution structure and a controller with a ZigBee master node, detection modules with ZigBee sub-nodes are arranged in at least two greenhouses in each management zone, the ZigBee master nodes and the ZigBee sub-nodes n the same greenhouses form a star topology network. The controllers are used for obtaining detection information and state information and sending them to an upper computer system, meanwhile, an execution structure is controlled according to the control information sent by the upper computer system. The upper computer system is used for executing the same control strategies for all greenhouses in each management zone according to the detection information and state information of each management zone. The number of detection points is decreased, the costs are saved, and meanwhile the control flow is simplified.
Owner:湖北田野上信息科技有限公司

Variable irrigation and fertilization zoning method for large sprinkler

The invention discloses a variable irrigation and fertilization zoning method for a large sprinkler, and belongs to the technical field of agricultural irrigation and fertilization. A soil or crop information point data set with a coordinate system is processed, an inverse distance weighting method is adopted, conversion from point data to surface data is completed, and a base map needed by management area division is generated; grading and classifying are carried out by adopting a natural discontinuity point method, and irrigation and fertilization grades are divided; a plurality of large management areas and small management areas are generated according to a classification result and parameters of a large sprinkler unit; and finally an irrigation and fertilization prescription map is generated. According to the method, the management areas can be accurately divided according to real-time conditions of soil and crops and information of the large sprinkler unit, then variable irrigation and fertilization are carried out, water and fertilizer resources can be saved, the sprinkling irrigation water and fertilizer utilization efficiency and the mechanization degree are improved, fixed-point quantitative irrigation and fertilization are achieved, and help is provided for development of precision agriculture.
Owner:CHINA AGRI UNIV

Precise variable irrigation and fertilization implementation method for circular sprinkling machine

The invention discloses a precise variable irrigation and fertilization implementation method for a circular sprinkling machine. The method comprises the steps: according to an irrigation and fertilization prescription map of a managed land parcel, dividing a plurality of groups of fan-shaped spraying areas by taking a central fulcrum shaft of a circular sprinkling machine as a center; if a single irrigation and fertilization prescription is adopted in the fan-shaped area, dividing the fan-shaped area into a large management area, and setting a unified set value of a percentage timer of the circular sprinkling irrigation machine, the working flow of a fertilizer injection pump and the duty ratio of a nozzle electromagnetic valve; if the fan-shaped area is composed of a plurality of different irrigation and fertilization prescriptions, dividing the fan-shaped area into a plurality of small management areas, and setting a unified percentage timer set value and a unified fertilizer injection pump working flow, wherein the small management areas correspond to different electromagnetic valve duty ratios; obtaining the residual clear water irrigation depth by subtracting the water and fertilizer liquid spraying depth from the designed irrigation depth of each management area, and then determining the clear water spraying percentage timer set value and the electromagnetic valve duty ratio. According to the invention, precise variable irrigation and fertilization of farmland scale management plots can be realized by using the circular sprinkling machine.
Owner:CHINA AGRI UNIV
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