CN-121003071-B - Intelligent regulation and control method and device for open field cabbage water fertilizer

CN121003071BCN 121003071 BCN121003071 BCN 121003071BCN-121003071-B

Abstract

The invention provides an intelligent regulation and control method and device for open field cabbage water and fertilizer, which are applied to the technical field of accurate regulation and control of crop water and fertilizer. The method comprises the steps of synchronously collecting short-term meteorological data, cabbage body growth image data and layered soil moisture content data of an open field cabbage planting area, integrating the collected multi-source heterogeneous data with a natural day as a time standard to generate daily-scale characteristic data which are uniform in scale and represent growth association characteristics of the cabbage, inputting the daily-scale characteristic data into a multi-source fusion intelligent decision model to obtain irrigation regulation parameters and fertilization regulation parameters of the open field cabbage, and executing water and fertilizer supply operation on the open field cabbage according to the irrigation regulation parameters and the fertilization regulation parameters.

Inventors

HAN XIAO
Wu huarui
LI XIAOSUO
YANG YUSEN

Assignees

北京市农林科学院信息技术研究中心

Dates

Publication Date: 20260508
Application Date: 20250923

Claims (8)

1. An intelligent regulation and control method for open field cabbage water and fertilizer is characterized by comprising the following steps: Synchronously collecting short-term meteorological data, cabbage body growth image data and layered soil moisture content data of an open field cabbage planting area; Taking a natural day as a time reference, integrating the acquired multi-source heterogeneous data to generate daily-level characteristic data which has a uniform scale and characterizes growth-related characteristics of cabbages; inputting the daily characteristic data into a multisource fusion intelligent decision model to obtain irrigation regulation and control parameters and fertilization regulation and control parameters of the open field cabbage; According to the irrigation regulation and control parameters and the fertilization regulation and control parameters, performing water and fertilizer supply operation on the open field cabbage; The multi-source fusion intelligent decision model comprises a meteorological feature extraction branch, a soil feature extraction branch, an image feature extraction branch and a cross-modal feature fusion unit, wherein the cross-modal feature fusion unit is used for adaptively adjusting the fusion proportion of image features and meteorological features by adopting gating weights generated by splicing the meteorological features and the soil features; the method for integrating the acquired multi-source heterogeneous data by taking the natural day as a time reference to generate daily-scale characteristic data which has a uniform scale and characterizes growth association characteristics of cabbages comprises the following steps: carrying out statistical analysis on the daily collected short-term meteorological data to obtain a daily-grade meteorological feature set, wherein the daily-grade meteorological feature set comprises daily average temperature, day-night temperature difference and daily total photosynthetic effective radiation integral; Carrying out dynamic analysis on layered soil moisture content data acquired on the same day to generate a daily soil characteristic set, wherein the daily soil characteristic set comprises a soil moisture content change rate and a conductivity change trend; Screening and fusing cabbage body growth image data acquired on the same day, and combining images of different time periods in a weighting mode according to imaging time periods to generate a daily-level image feature set; The daily weather feature set, the daily soil feature set and the daily image feature set are subjected to scale unification and format regulation, redundant information is removed, and daily feature data are formed; The method further comprises the step of converting the extreme weather event into continuous characteristics by using the preset high-temperature intensity to obtain the accumulated stress intensity, wherein the accumulated stress intensity is used for quantifying the accumulated stress effect of the preset high temperature on the water demand.
2. The intelligent regulation and control method for the open field cabbage water and fertilizer according to claim 1 is characterized in that an input layer of a meteorological feature extraction branch receives a daily meteorological feature set, an optical temperature coupling unit is embedded after the first full-connection layer is activated to obtain a fused meteorological feature, the fused meteorological feature is input into a second full-connection layer, the optical temperature coupling unit is used for analyzing a synergistic mechanism of photosynthetic effective radiation and temperature, a high-temperature feature enhancement channel is arranged in front of the second full-connection layer, an additional subnet is activated through a gating mechanism, a heat stress feature is calculated and fused with the meteorological feature output by the second full-connection layer to obtain an enhancement feature, the enhancement feature is combined with a main path output, and a meteorological feature vector is obtained through linear transformation.
3. The intelligent open field cabbage water and fertilizer regulation and control method according to claim 1 is characterized in that the soil characteristic extraction branch takes a daily soil characteristic set as input, nonlinear mapping is achieved through full-connection layer combination GELU activation functions, the negative influence of the water content change rate of soil on the conductivity change rate is constrained by adopting hard coding weights, and an original change rate signal is fused with an activation characteristic through residual connection to obtain a soil characteristic vector.
4. The intelligent regulation and control method for the open field cabbage water and fertilizer is characterized in that the image feature extraction branch comprises an image segmentation and position coding layer, a transform coding layer and a multi-scale feature enhancement layer, wherein the image segmentation and position coding layer is used for segmenting an image into pixel blocks and giving different weights to a canopy space structure through position coding, the transform coding layer is used for establishing a space association network among blades based on a self-attention mechanism, and the multi-scale feature enhancement layer is used for integrating global canopy coverage and local new She Zhanbi to obtain image feature vectors.
5. An intelligent open field cabbage water fertilizer regulating device applying the intelligent open field cabbage water fertilizer regulating method as claimed in any one of claims 1 to 4, which is characterized by comprising an acquisition module, a processing module and a supply module; the acquisition module is used for synchronously acquiring short-term meteorological data, cabbage body growth image data and layered soil moisture content data of the open-field cabbage planting area; The processing module is used for integrating the acquired multi-source heterogeneous data by taking a natural day as a time reference to generate daily-level characteristic data which has a uniform scale and represents growth association characteristics of cabbages; The supply module is used for executing water and fertilizer supply operation on the open field cabbage according to the irrigation regulation and control parameters and the fertilization regulation and control parameters; The multi-source fusion intelligent decision model comprises a meteorological feature extraction branch, a soil feature extraction branch, an image feature extraction branch and a cross-modal feature fusion unit, wherein the cross-modal feature fusion unit is used for adaptively adjusting the fusion proportion of image features and meteorological features by adopting gating weights generated by splicing the meteorological features and the soil features.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the intelligent open field cabbage water and fertilizer regulation method according to any one of claims 1 to 4 when executing the computer program.
7. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the open field cabbage water intelligent regulation method of any one of claims 1 to 4.
8. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the intelligent regulation method for open field cabbage water and fertilizer according to any one of claims 1 to 4.

Description

Intelligent regulation and control method and device for open field cabbage water fertilizer Technical Field The invention relates to the technical field of precise regulation and control of crop water and fertilizer, in particular to an intelligent regulation and control method and device for water and fertilizer of open field cabbages. Background Open-field cabbage is widely cultivated in open air, the growth environment is completely exposed to natural climate, and global climate change causes extreme weather such as high-temperature drought, heavy rain, abnormal low temperature and the like frequently, and temperature light precipitation fluctuation obviously influences physiological processes such as cabbage transpiration, photosynthesis and the like, expansion of rosettes, compaction of knots and the like, so that the water and fertilizer requirements of the cabbage are highly dynamic and unpredictable. The existing open field cabbage water and fertilizer management mostly adopts empirical operation or static model regulation and control, and part of intelligent technologies are only based on single factor decision-making, such as irrigation development according to soil moisture content, planning schemes depending on weather forecast or demand deduction by remote sensing monitoring of crop growth vigor. However, experience and a static model are delayed in response, unbalance of water and fertilizer supply and demand is easy to cause, and the environmental problems of resource waste, water eutrophication and the like are caused by rough operation, the intelligent technology driven by a single factor lacks multi-dimensional collaborative sensing and fusion decisions on climate change, crop growth and water and fertilizer demand, soil moisture content monitoring ignores crop transpiration and climate association, weather forecast breaks away from crop actual response, growth monitoring is limited by cost and instantaneity, an accurate demand model is difficult to build, and the intelligent technology can not adapt to the water and fertilizer demand of dynamic change of open-field cabbages. Disclosure of Invention The invention provides an intelligent regulation and control method and device for water and fertilizer of open field cabbages, which are used for solving the problems of unbalanced water and fertilizer, waste of resources and high environmental risk caused by dynamic and changeable water and fertilizer requirements of open field cabbages due to climate change, realizing accurate dynamic regulation and control of water and fertilizer, improving resource efficiency, ensuring stable yield and high quality and enhancing climate adaptability. The invention provides an intelligent regulation and control method for water and fertilizer of open field cabbages, which comprises the steps of synchronously collecting short-cut meteorological data, cabbage body growth image data and layered soil moisture content data of open field cabbages, integrating the collected multi-source heterogeneous data by taking a natural day as a time reference to generate daily-scale characteristic data which are uniform in scale and characterize growth-related characteristics of the cabbages, inputting the daily-scale characteristic data into a multi-source fusion intelligent decision model to obtain irrigation regulation and control parameters and fertilization regulation and control parameters of the open field cabbages, and executing water and fertilizer supply operation on the open field cabbages according to the irrigation regulation and control parameters and the fertilization regulation and control parameters, wherein the multi-source fusion intelligent decision model comprises a meteorological characteristic extraction branch, a soil characteristic extraction branch, an image characteristic extraction branch and a cross-mode characteristic fusion unit, and the cross-mode characteristic fusion unit is used for adaptively regulating the fusion proportion of image characteristics and meteorological characteristics by adopting gating weights generated by splicing the meteorological characteristics and the soil characteristics. The invention further provides an intelligent open field cabbage water and fertilizer regulation and control device which comprises an acquisition module, a processing module and a supply module, wherein the acquisition module is used for synchronously acquiring short-term meteorological data, cabbage body growth image data and layered soil moisture content data of an open field cabbage planting area, the processing module is used for integrating acquired multi-source heterogeneous data with a natural day as a time standard to generate daily-scale characteristic data which is uniform in scale and characterizes growth association characteristics of the cabbage, the daily-scale characteristic data is input into a multi-source fusion intelligent decision model to obtain irrigation regulation and cont