Method and system for monitoring soil salinity in facility

Abstract

The embodiment of the invention provides a method and system for monitoring soil salinity in a facility. Based on the soil water content data of a root zone of a facility crop and the meteorological data of a canopy of a meteorological data sensing facility crop, and simulation estimation is conducted on the soil salinity of the root zone of the facility crop by a numerical method. Compared with atraditional soil salt determination method, the real-time monitoring of the soil salinity in the root zone of the crop is achieved, which saves a human resource cost and the capital cost of substratesalt measuring instruments and consumables. The method can be used for monitoring the dynamics of soil salinity changes in the root zone of the facility crop, adopt salinity control measures in timeto avoid the impact of salt damage on the facility crop, and provide a technical support for the high-quality and high-efficiency output of the facility vegetable crop. The method can achieve the real-time monitoring of the dynamic process of the soil salinity changes in the facility vegetable root zone, and provide support for formulating a scientific and rational regulation strategy of the soilroot layer salinity of the facility crop and achieving the sustainable development of facility vegetable production.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of facility soil environment monitoring, and more specifically, to a method and system for monitoring facility soil salinity. Background technique [0002] Facility vegetable cultivation gets rid of the restriction of natural environment on vegetable production, and uses engineering technology to improve or create an environment suitable for the growth of vegetable crops in a local area, so as to obtain higher yield, quality and economic benefits, which belongs to a kind of high-efficiency agriculture. Compared with the traditional field vegetable cultivation, the environment in the facility is relatively closed, and it is in a state of high temperature and high humidity for a long time, and the water demand of the crops in the facility is relatively large. The water brought into the soil of the facility through irrigation will be lost to the air under the action of crop evapotranspirat...

AI Technical Summary

Problems solved by technology

Laboratory analysis and determination requires regular collection of soil samples from the root layer of crops. After cumbersome sample pretreatment, the residue method is used to directly measure the soil salt content or by measuring the conductivity of soil extracts with different soil-to-water ratios, and then convert For soil salinity, it is time-consuming and labor-intensive, and cannot be combined with Internet of Things technology to achieve real-time measurement

Compared with the method of measuring soil salinity in the laboratory, the in-situ measurement of the sensor is more convenient and easy to realize in-situ monitoring, but the measurement index of soil conductivity sensors on the market is mostly soil conductivity (Bulk soil electric conductivity), which is affected by soil moisture content, The influence of various factors such as soil salinity and soil organic matter cannot directly reflect the change of soil salinity.

Although a few soil salinity sensors based on graphite electrodes or capacitor technology can theoretically realize real-time monitoring of soil salinity, the above-mentioned sensors are expensive and are mostly used in scientific research experiments, and do not yet have the conditions for application in facility vegetable production

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