10 results about "Root distribution" patented technology

The utility model relates to the technical field of wheat and corn water and fertilizer drip irrigation, in particular to a wheat and corn intercropping water and fertilizer separate control drip irrigation device which comprises a drip irrigation pipe. The drip irrigation device further comprises sealing cover plates installed at the two ends of the drip irrigation pipe correspondingly, the sealing cover plates are used for sealing the two ends of the drip irrigation pipe, two installation blocks are connected to the outer side faces of the sealing cover plates, and inserting rods are installed at the lower ends of the installation blocks. The branch control assembly comprises a fixing rod, a separation module, a branch conveying module, a cavity separation module, a connection module, a transportation module and a drip irrigation module which are arranged in the drip irrigation pipe, the separation module is used for separating an inner cavity of the drip irrigation pipe, the branch conveying module is responsible for guiding water into the inner cavity of the corresponding drip irrigation pipe, and the cavity separation module serves as a buffer cavity area of the branch conveying module; the four rows of drip irrigation holes with different intervals and hole diameters are formed, the corresponding cavities and the drip irrigation holes can be selectively used according to the intercropping row spacing, planting density and root system distribution characteristics of wheat and corn, and the irrigation requirements of various intercropping modes are met.

The application provides a root system distribution feature and slope erosion correlation analysis method, comprising: acquiring root system image data, extracting root system distribution features from soil samples through a scanning device, separating root system structures by using an image segmentation algorithm, and obtaining a root system density distribution map; calculating a congestion degree index according to the root system density distribution map, grouping root system areas by using a clustering algorithm, and determining the numerical change of the congestion degree at different growth stages; for the stage division result, acquiring slope erosion simulation data, generating an erosion intensity distribution by using a water flow simulation software, and determining a corresponding matrix of the erosion intensity and the congestion degree; analyzing a non-linear corresponding relationship from the corresponding matrix, fitting a function relationship between the congestion degree and the erosion intensity by using a regression analysis model, and obtaining a fitting parameter set; inputting real-time root system data into an optimized corresponding relationship model to generate an erosion control effect prediction, and determining an optimal erosion prevention intervention point.

This invention relates to a method for judging soil moisture and precise irrigation in tobacco fields in the Pu'er tobacco region and its application. The method includes: (1) combining tobacco plant morphological diagnosis with soil moisture quantitative monitoring to judge the soil moisture status in the tobacco field; (2) classifying the degree of water shortage according to the soil moisture status in the tobacco field and the growth and development stage of the tobacco plants, and performing precise irrigation on the tobacco plants; in step (1), the morphological diagnosis is based on the dynamic recovery of wilting tobacco leaves and the tactile sensation of the leaves, and the soil moisture quantitative monitoring method is: setting up soil moisture sensors according to the root distribution depth and tobacco plant planting density at different growth stages. This invention combines tobacco plant morphological diagnosis with soil moisture quantitative monitoring, establishes collaborative decision-making rules, realizes the organic integration of morphological indicators and sensor data, and overcomes the defects of strong subjectivity or obvious lag in single judgment methods.

This invention relates to the field of ecohydrology and discloses a method for calculating plant ecological water consumption in arid and semi-arid regions. The method includes: acquiring meteorological, soil, and vegetation phenological data; constructing a dynamic evolution model of root depth and updating the maximum root depth daily; determining the depth weight of the effective water extraction layer based on the dynamic root distribution; calculating the weighted average effective soil moisture content; and outputting the daily-scale ecological water consumption by combining a modified transpiration ratio model. This invention significantly improves the accuracy of water consumption retrieval by coupling meteorological drivers, soil moisture stress, and the dynamic regulation mechanism of root system behavior during plant growth stages. Field measurements have verified a reduction of over 25% in the root mean square error, providing a high-precision quantitative tool for ecological water demand assessment and water resource management.

The application relates to a root system distribution imaging contrast medium, a preparation method, an in-situ imaging system and a method, belongs to the field of ecological restoration and protection, and is characterized in that the contrast medium is mixed by a composite growth hormone, a dissolving agent, a tracer and a solvent; the in-situ imaging system comprises emitting devices for emitting neutron beams to plant root systems, receiving devices for receiving the neutron beams, imaging devices for converting the received neutron beams into images, and two drilling pipes for drilling, each of the drilling pipes comprises a hollow pipe with a top opening and a drill bit arranged at the bottom of the hollow pipe, a positioning structure is arranged in the hollow pipe, and the positioning structure comprises a positioning chuck and a guide pipe arranged on the upper surface of the positioning chuck. The application can effectively adapt to the topography of mountainous areas, eliminate the environmental influence of mountainous areas, and improve the three-dimensional imaging precision and efficiency of the neutron radiation in-situ testing technology for the root system distribution of plants in mountainous areas.

This invention relates to the field of plant canopy transpiration estimation, specifically a method for estimating canopy transpiration in shallow-rooted plants. The invention collects readily available surface environmental factors such as total radiation, vapor pressure deficit, soil moisture content at 20cm depth, canopy leaf area index, and wind speed. It then uses the envelope method to extract the corresponding standardized canopy transpiration rate values ​​and fits control functions one by one. Finally, it constructs a canopy transpiration estimation model by multiplying the output values ​​of each control function, the leaf area index, and the canopy transpiration rate per unit leaf area. This effectively avoids the shortcomings of traditional Penman-Monteith-type models, which require a large number of difficult-to-obtain parameters such as crop coefficients and canopy impedance, significantly lowering the barrier to model use. Furthermore, considering the root distribution characteristics of shallow-rooted plants, it uses soil moisture content at a depth of 20cm to improve the accuracy of canopy transpiration estimation.

This utility model discloses an integrated device for plant seedling maintenance, relating to the field of seedling maintenance technology. It includes a support frame, of which multiple supports are provided, and a ring-shaped support member is fixedly connected to the top of each support frame. A ring-shaped irrigation member is slidably connected to the center of the bottom of the ring-shaped support member. When it is necessary to adaptively adjust the irrigation height of the irrigation nozzle, the positioning pin on the outer wall of the sliding plate can be pulled outwards, separating its end from the positioning hole. After being pulled out, the ring-shaped irrigation member can be slid up and down along the guide groove and slide of the support frame according to actual needs until the irrigation nozzle is aligned with the target irrigation area. Then, the positioning pin is released, allowing it to be inserted into the positioning hole of the corresponding height under the action of a compression spring, quickly locking the height of the ring-shaped irrigation member. The irrigation height can be adjusted according to the root distribution characteristics of the seedling and mature stages of the plant.

The invention provides a dry farming optimal soil body profile construction and barrier layer treatment method for different soil types in northeast China, and relates to the technical field of artificial intelligence and agricultural soil digital modeling. The dry farming optimal soil body profile construction and barrier layer treatment method for different soil types in northeast comprises the steps that S1, a northeast region soil multi-dimensional parameter database is constructed, and parameters comprise soil type parameters, physical structure parameters, moisture characteristic parameters, mechanical resistance parameters, crop root system distribution parameters and historical yield data; and performing normalization processing on the parameters to form a structured training data set. By means of construction and optimization of a multi-dimensional parameter database, application of a deep learning algorithm, embedding of reinforcement learning decisions and the like, precision and adaptivity of soil profile construction and barrier layer treatment are effectively improved, and by means of digital integration of multi-dimensional soil parameters, characteristics of different soil types in the northeast region can be comprehensively mastered.