6 results about "Soil scientist" patented technology

This invention provides a sampling device for municipal landscaping soil testing, comprising a sampling rod, an outer sleeve, and multiple telescopic sampling mechanisms spaced apart along the axial direction. The outer sleeve is slidably fitted over the sampling rod, and the extension or retraction of the sampling spoon in the telescopic sampling mechanism is controlled by sliding the outer sleeve. During sampling, the outer sleeve moves downward to retract the sampling spoon into the groove. After inserting the device into the soil to the target depth, the outer sleeve is lifted to extend the sampling spoon, which then rotates with the sampling rod to excavate soil, achieving simultaneous collection of soil samples at different depths. This device is compact in structure, easy to operate, and can complete multi-layer soil sampling in one operation, avoiding soil disturbance and sample contamination caused by repeated insertion and removal, thus improving sampling efficiency and accuracy. It is particularly suitable for rapid sampling of vertical soil profiles in municipal landscaping, environmental monitoring, and soil science research.

This invention relates to the field of soil science and environmental testing equipment technology, and particularly to a soil profile collection machine, comprising: a collection machine body, a frame fixedly connected to one side of the collection machine body, a vertically arranged chain drive mechanism mounted on the frame, and a soil profiler detachably connected to the chain drive mechanism via a cover plate. This invention achieves automated and standardized profile collection by driving the detachable soil profiler vertically into the soil via the chain drive mechanism. The soil profiler adopts a trapezoidal wedge-shaped entry design, along with built-in springs and liners, effectively reducing the adsorption force and static friction between the sample side and the inner wall of the outer shell, avoiding potential sample structure damage due to excessive friction. Furthermore, the detachable connection design of the cover plate, hook, and hook on the chain drive mechanism allows for rapid separation and connection of the soil profiler and the drive mechanism, improving the convenience of sample handling.

The application belongs to the technical field of soil science, and discloses a method for analyzing deformation of soil pore structure under uniaxial compaction, which comprises the following steps: collecting a soil sample; performing CT scanning on the soil sample to obtain a first image slice; performing uniaxial compaction on the soil sample, and performing CT scanning on the compacted soil sample to obtain a second image slice; performing image processing on the first image slice and the second image slice to obtain a binary image, and analyzing changes in soil pore characteristic parameters before and after compaction; obtaining a pre-compaction binary image and a post-compaction binary image of biological pores according to the first image slice and the second image slice; and calculating changes in biological pore characteristic parameters before and after compaction according to the pre-compaction binary image and the post-compaction binary image, and evaluating stability of biological pores in the compaction process. The method can quantitatively analyze deformation of soil pore structure under uniaxial compaction.

This invention relates to the field of soil science technology, specifically a method for calculating the relative spatial distribution of particulate organic matter and pore structure in CT images, comprising the following steps: S1: performing CT scanning on a soil sample and preprocessing the image to obtain a preprocessed CT image; S2: identifying and segmenting particulate organic matter and pore structure from the preprocessed CT image based on machine learning; S3: calculating the morphological characteristics of the pore structure; S4: calculating the morphological characteristics of the particulate organic matter; S5: analyzing the relative spatial distribution of the particulate organic matter and the pore structure, including calculating the distance distribution from the particulate organic matter to the surface of the pore structure. This invention not only calculates the morphological parameters of the pore structure and organic matter, but also calculates the distribution of particulate organic matter relative to the pore structure, as well as the content of particulate organic matter connected to the pores, enabling a direct characterization of the interaction mechanism between the two.

The application is suitable for the field of soil science and technology, and provides a method for estimating the influence degree of fertilization behavior on soil properties across space and time and related equipment, which comprises the following steps: obtaining initial data of a to-be-predicted area; initializing a farmland grid of the to-be-predicted area, and performing data matching and multi-dimensional clustering partitioning on geographic position data, soil data and meteorological data in the initial data and the farmland grid to obtain a plurality of farmland space-time units corresponding to the to-be-predicted area; constructing a quantitative relationship equation of a planting mode corresponding to each farmland space-time unit for replacing the influence of fertilization behavior on soil properties and performing space-time recursion to determine the influence degree prediction result of the fertilization behavior on the soil properties in each farmland space-time unit of the to-be-predicted area at different time periods, and determining the target global prediction result of the to-be-predicted area according to the influence degree prediction result of all farmland space-time units. The application can realize the estimation of the influence degree of the fertilization behavior on the soil properties in each farmland space-time unit at different target time periods.

This invention discloses a method for predicting the optimal phosphorus application rate for Fritillaria cirrhosa seedlings based on multiple soil characteristics. It belongs to the fields of plant nutrition, soil science, and traditional Chinese medicine cultivation. The method includes: obtaining data on Fritillaria cirrhosa yield and corresponding soil physicochemical properties, phosphorus cycle-related enzyme activity, and microbial community structure under different phosphorus application levels; standardizing soil and enzyme activity indicators, and preprocessing and extracting features from microbial data to obtain comprehensive feature variables; constructing a phosphorus application-yield nonlinear response model using phosphorus application rate as the independent variable and yield as the dependent variable; and determining the optimal phosphorus application rate that maximizes the predicted yield based on this model. This invention enables accurate estimation of the phosphorus requirement of Fritillaria cirrhosa, providing personalized phosphorus application schemes for different soil conditions, thereby effectively improving yield and phosphorus fertilizer utilization efficiency.