CN-121970675-A - Irrigation regulation and control method and system based on plant growth and water utilization

CN121970675ACN 121970675 ACN121970675 ACN 121970675ACN-121970675-A

Abstract

The application provides an irrigation regulation and control method and system based on plant growth and water utilization, and relates to the technical field of ecological restoration, wherein the method comprises the following steps of monitoring weather conditions and soil water content conditions of a planting area; and generating and executing an irrigation regulation strategy based on the weather parameters obtained by monitoring and the deviation between the current soil water content and a preset irrigation threshold, wherein the types of target rural plants contained in the planting area are not less than one, and the irrigation threshold is predetermined based on the growth and water utilization characteristics of the target rural plants. According to the technical scheme, the irrigation threshold is determined in advance by combining the growth and water utilization characteristics of plants, and an irrigation strategy is executed according to the soil water content and weather parameters monitored in real time, so that the aim of accurately irrigating vegetation in the ecological restoration process of the alpine region is fulfilled. Compared with the traditional small water flood irrigation mode, the application obviously improves the utilization rate of water resources and is beneficial to ensuring the ecological restoration efficiency.

Inventors

ZHANG YAN
LV YU
DENG ZHU
ZHU RUIFENG
WANG KUNFEI
HUANG JIAO
YANG YANDONG
YUAN XU
SHI CHANGQING
YANG ZAIZHI
LIU XIAOYONG
LI WEI
WEI XIAODONG

Assignees

北京林业大学
华能澜沧江水电股份有限公司
华能澜沧江上游水电有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (10)

1. An irrigation regulation and control method based on plant growth and water utilization, which is characterized by comprising the following steps: Monitoring the weather condition and the soil water content condition of a planting area; Generating an irrigation regulation strategy and executing the irrigation regulation strategy based on the weather parameters obtained by monitoring and the deviation between the current soil water content and a preset irrigation threshold value; wherein the planting area contains at least one kind of target native plant, and the irrigation threshold is predetermined based on the growth and moisture utilization characteristics of the target native plant.
2. The irrigation regulation method based on plant growth and water utilization according to claim 1, wherein the predetermined process of the irrigation threshold value comprises respectively developing a water utilization characteristic planting test for each target rural plant to determine threshold system data of the corresponding type of target rural plant, wherein a threshold index in the threshold system data comprises a reference irrigation threshold range; and when the types of the target rural plants contained in the planting area are more than two, analyzing the standard irrigation threshold ranges of the target rural plants of the corresponding types according to the actual types of the target rural plants in the planting area, and selecting a common interval of each standard irrigation threshold range as the irrigation threshold.
3. The irrigation regulation method based on plant growth and moisture utilization according to claim 2, wherein the process of performing the moisture utilization characteristic planting test on any kind of target rural plants comprises performing planting of the kind of target rural plants by means of greenhouse potting, and constructing a plurality of planting test groups based on preset soil moisture gradient distribution; After plant leaves grow to mature leaves, carrying out water control treatment on each test group, measuring sample plant leaves when the treatment reaches a corresponding soil water content target, obtaining photosynthetic parameters of each sample in the corresponding group and determining other target parameters based on the photosynthetic parameters, wherein the photosynthetic parameters comprise net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO 2 concentration, and the other target parameters comprise instantaneous water utilization rate, inherent water utilization efficiency and air hole limiting value; And constructing a plurality of sample data sets under the preset soil water content gradient according to the acquired and determined parameter data, and determining the standard irrigation threshold range of the target rural plants of the category based on the sample data sets.
4. The irrigation regulation method based on plant growth and moisture utilization of claim 3 wherein the sample dataset includes net photosynthetic rate, instantaneous moisture utilization, intrinsic moisture utilization efficiency and stomatal restriction data, the process of determining a baseline irrigation threshold range for the target native plant of the species based on the sample dataset comprises: Carrying out normalization processing on various parameter values under each soil moisture content gradient in the sample data set to obtain normalized parameters, carrying out weighted function calculation on the normalized parameters under each soil moisture content gradient based on a preset weight coefficient system to obtain comprehensive index parameter value data representing the comprehensive condition of plants; And based on the relation response model, determining a continuous soil water content interval corresponding to a preset percentage of which the comprehensive index value is not lower than the maximum value as a reference irrigation threshold range of the target rural plant.
5. The irrigation regulation method based on plant growth and moisture utilization according to any one of claims 2 to 4, wherein the predetermined process of the irrigation threshold value further comprises selecting a threshold index from threshold system data corresponding to the target native plant as the irrigation threshold value according to actual irrigation demand when the target native plant species contained in the planting area is one.
6. The irrigation regulation and control method based on plant growth and water utilization according to claim 5, wherein the types of the target native plants comprise nitraria tangutorum bobr and artemisia rupestris, and the threshold system data comprises 65.00% -93.42% of threshold indexes corresponding to high-yield potential areas of the nitraria tangutorum bobr and 50% -65% of threshold indexes corresponding to high-efficiency regulation and control areas of the artemisia rupestris.
7. The irrigation regulation and control method based on plant growth and water utilization according to claim 1, wherein the current soil moisture content is soil volume moisture content data obtained through in-situ sensor real-time monitoring, deviation of the current soil moisture content from a preset irrigation threshold is determined by converting the soil volume moisture content data into soil mass moisture content based on soil volume weight parameters of a planting area, and deviation of the soil mass moisture content and the irrigation threshold is determined by calculating a difference value between the soil mass moisture content and the irrigation threshold.
8. The irrigation regulation method based on plant growth and moisture utilization according to claim 1, wherein an irrigation regulation strategy is generated and executed based on fuzzy control logic, wherein a fuzzy control rule base is constructed based on deviation of current soil moisture content from an irrigation threshold value in combination with weather parameters including rainfall intensity, photosynthetic effective radiation and wind speed.
9. The irrigation regulation method based on plant growth and moisture utilization of claim 8, wherein in executing the fuzzy control decision process, the irrigation duration and flow rate are output and the following physical constraints are satisfied: Wherein, the As a function of the water conductivity of the soil, Represents the maximum allowable flow rate in relation to the wind speed W, And represents flow, and t represents irrigation duration.
10. An irrigation regulation system based on plant growth and moisture utilization, comprising: The monitoring module is used for monitoring the weather condition and the soil water content condition of the planting area; The control execution module is used for generating and executing an irrigation regulation strategy based on the weather parameters obtained by monitoring and the deviation between the current soil water content and a preset irrigation threshold value; wherein the planting area contains at least one kind of target native plant, and the irrigation threshold is predetermined based on the growth and moisture utilization characteristics of the target native plant.

Description

Irrigation regulation and control method and system based on plant growth and water utilization Technical Field The application relates to the technical field of ecological restoration, in particular to an irrigation regulation and control method and system based on plant growth and water utilization. Background In the process of realizing the invention, the inventor finds that in vegetation ecological reconstruction, the survival and community stability of the native plants depend on the accurate regulation and control of soil moisture. In the high-cold ecological environment, related rural plant species have strict requirements on moisture, the seedlings die due to too low, and the root microenvironment is damaged due to excessive seedling. In the prior art, the irrigation technology is extensive, the dynamic response to the water demand threshold of the rural plants is lacking, the water quantity is far beyond the actual demand, the water resource is wasted, the contradiction between supply and demand is aggravated, slope erosion is induced due to soil saturation, even disasters such as landslide are induced, and engineering and ecological safety are threatened. Therefore, aiming at the application scene of vegetation ecological restoration, an intelligent irrigation technology which is matched with the moisture threshold value of the rural plants and is adaptive to the geographic environment is provided, so that the intelligent irrigation technology is a core support for improving restoration efficiency, and the urgent need for effectively implementing engineering is further ensured. Disclosure of Invention In order to overcome the problems in the related art at least to a certain extent, the embodiment of the application provides an irrigation regulation and control method and system based on plant growth and water utilization, which accurately irrigates plants based on a predetermined irrigation threshold value and in combination with actual soil water content. First aspect In some embodiments, the present application provides an irrigation control method based on plant growth and moisture utilization, the irrigation control method comprising: Monitoring the weather condition and the soil water content condition of a plant planting area; Generating an irrigation regulation strategy and executing the irrigation regulation strategy based on the weather parameters obtained by monitoring and the deviation between the current soil water content and a preset irrigation threshold value; wherein the planting area contains at least one kind of target native plant, and the irrigation threshold is predetermined based on the growth and moisture utilization characteristics of the target native plant. Second aspect In some embodiments, the present application provides an irrigation regulation system based on plant growth and moisture utilization, the irrigation regulation system comprising: the monitoring module is used for monitoring the weather condition and the soil water content condition of the plant planting area; The control execution module is used for generating and executing an irrigation regulation strategy based on the weather parameters obtained by monitoring and the deviation between the current soil water content and a preset irrigation threshold value; wherein the planting area contains at least one kind of target native plant, and the irrigation threshold is predetermined based on the growth and moisture utilization characteristics of the target native plant. The irrigation regulation and control method based on plant growth and water utilization comprises the steps of monitoring weather conditions and soil water content conditions of a planting area, generating an irrigation regulation and control strategy based on the difference between the weather parameters obtained through monitoring and the current soil water content and a preset irrigation threshold value, and executing the irrigation regulation and control strategy, wherein the number of target rural plant types in the planting area is not less than one, and the irrigation threshold value is predetermined based on the growth and water utilization characteristics of target plants. According to the technical scheme, the irrigation threshold is determined in advance by combining the growth and water utilization characteristics of the target rural plants, and the irrigation strategy is executed in a targeted mode according to the soil water content and the weather parameters monitored in real time, so that the aim of accurately irrigating the vegetation ecological restoration process in the alpine region is achieved. Compared with the traditional small water flood irrigation mode, the application obviously improves the utilization rate of water resources and is beneficial to ensuring the ecological restoration efficiency. Drawings FIG. 1 is a schematic flow diagram illustrating a method for regulating irrigation based on plant growth and water