Intelligent method and system for controlling alternate irrigation of local root zone of crops

Abstract

The invention discloses an intelligent method and a system for controlling alternate irrigation of local root zone of crops. The system comprises a signal collecting module and a control module, wherein the signal collecting module is used for collecting the soil water-content information of different root zones of the crops in real time and the control module is used for controlling the motor ofthe irrigation system by utilizing the water difference alternate threshold, upper limit and lower limit of the soil water content and practically measured soil water-content real-time information ofall side root zones. The system is applicable to the automatic control on the alternate irrigation of local root zones of field furrow irrigation crops such as corns, cottons, potatoes and the like, fruit trees and greenhouse vegetable crops, has the advantages of land saving, water saving and energy saving, has low cost and simple operation and is convenient for being generalized and applied in large area.

Description

technical field [0001] The invention relates to the technical field of surface irrigation, in particular to an intelligent method and system for controlling alternate irrigation of local root zones of crops. Background technique [0002] In 1997, based on the principle of water-saving irrigation technology and the root signal theory of crops' perception of water shortage, Kang Shaozhong proposed a root partition alternate irrigation technology, which actively controls the water status of crop root zone soil in a certain area of ​​horizontal or vertical section, Make a part of the root zone of the crop grow in a dry or relatively dry environment all the time, limit the water absorption of the root system in this part, and at the same time make the root system appear alternately in the dry area of ​​the horizontal or vertical section through artificial control, so that the root system in the dry area produces a water stress signal It is transmitted to the leaf stomata to effec...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing alternate root zone irrigation device needs to use other experimental observation data to judge the actual water content of the crop root zone, determine whether irrigation is required and when alternate irrigation is required, which seriously affects the accuracy of control and often misses the water demand of crops. production cuts due to critical period

[0006] 2. The existing root system alternate irrigation device is still in the manual control stage, and the alternate irrigation of the local root zone of the crop needs to be realized through the operation of machinery or connecting rods, which is time-consuming and laborious, and the response speed is slow

[0007] 3. The existing root system alternate irrigation device has a low degree of automation, and has not realized human-machine exchange and intelligent control based on real-time monitoring of soil moisture, and cannot truly meet the optimal water environment requirements for healthy growth of crops.

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