Soilless culture nutrient solution management and control method and system

Abstract

The invention provides a soilless culture nutrient solution management and control method and system. The method comprises the steps of sequentially acquiring the reference evapotranspiration rate andthe actual evapotranspiration rate of a crop to be tested in each time interval according to the preset time interval; determining the crop stress state of the crop to be tested in the time intervalto be tested according to the ratio relation between the reference evapotranspiration rate and the actual evapotranspiration rate in the time interval to be tested; if the crop stress state exceeds the standard, determining the amount of a nutrient solution applied to the crop to be tested; and completing nutrient solution application work of the crop in a production area according to the amount of the nutrient solution applied to the crop to be tested. According to the embodiment of the invention, the stress state of the crop can be judged in real time, and nutrient solution management and control are carried out on the basis of the stress state, so that accurate management and control of the nutrient solution of the soilless culture crop are realized, the influence of the delay of nutrient solution application measures on crop growth is avoided, the dependence on a matrix environment sensor and a crop physiological and ecological sensor is reduced, the utilization rate of the nutrient solution is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of soilless cultivation, in particular to a soilless cultivation nutrient solution control method and system. Background technique [0002] Soilless cultivation uses artificially prepared substrates to assist in the cultivation of crops by watering nutrient solution, which gets rid of the dependence on natural soil, thereby overcoming the negative factors such as soil-borne diseases and insect pests, secondary salinization, soil quality degradation and so on. constraints. The soilless cultivation mode can also fine-tune the water and fertilizer environment of the crop rhizosphere, avoiding the impact of unfavorable factors such as water, salinity and nutrient stress on the growth and yield of crops, and laying the foundation for high-quality and efficient production of crops. At present, soilless cultivation of vegetable production has developed into a practical cultivation technology, and its application s...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the current soilless cultivation nutrient solution management and control method has high requirements on the accuracy and stability of relevant sensors, and the determination of the empirical threshold is relatively cumbersome and has large errors, the embodiment of the present invention provides a soilless cultivation nutrient solution management and control method. method and system

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