Automatic control method for water-saving irrigation by inducing turgor pressure of plant leaf

A plant leaf and turgor pressure technology, applied in botany equipment and methods, non-electric variable control, humidity control, etc., can solve the physiological water condition of the irrigation system to meet the water demand of plants, and cannot truly reflect the physiological water demand of plants in real time and accurately Requirements, automatic irrigation systems are difficult to have universality and high efficiency, to achieve the effect of new utilization

Inactive Publication Date: 2009-04-22
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the variability of external conditions, the diversity of land conditions in different regions, the complexity of the geological structure of different soils, and the inconsistency of the water content requirements of different crops on the land, it is difficult to achieve automatic irrigation systems based ...

Method used

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  • Automatic control method for water-saving irrigation by inducing turgor pressure of plant leaf
  • Automatic control method for water-saving irrigation by inducing turgor pressure of plant leaf
  • Automatic control method for water-saving irrigation by inducing turgor pressure of plant leaf

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 , figure 2 , Induction water-saving irrigation automatic control device: composed of control box 1, infrared detector 2, bracket 3, connecting rod 4, control box 1 is fixed on the lower end of bracket 3, infrared detector 2 is connected with connecting rod 4, and can be adjusted through The connecting screw 5 is fixed to the upper end of the support 3 (the position of the connecting rod fixed on the support can be adjusted up and down according to the actual height of the plant), and the induction plate of the infrared detector 2 is provided with a blade clip 6 for fixing the blade on the induction panel (i.e. Fixed on the infrared detector), the control box 1 is provided with a control panel 7, a water outlet 8 and a water inlet 9, and the control panel 7 is provided with an indicator light 10, a manual opening switch 11 and a manual closing switch 12. The indicator light 10 plays the role of indicating the state of the control system. When the control s...

Embodiment 2

[0031] Embodiment 2 Paddy rice (crop) experiment

[0032] 1 Materials and methods

[0033] 1.1 Experimental design

[0034] see figure 1 , figure 2 , select the infrared detector of embodiment 1 for use.

[0035] The rice experiment was carried out in the glass-top net room of the School of Life Sciences, Zhejiang University (Hangzhou, Zhejiang, 120.2E, 30.3N). The data measurement season is from the end of April to the end of May in spring, with an average temperature of 20 to 23 degrees and a relative humidity of 75% to 80%. . All data measurements were completed between 8 and 10 a.m. Beijing time. Use a soil moisture meter to measure the volumetric water content. When the soil moisture is saturated, the distance L between the blade clamp 6 and the leaf tip A is 22-24 cm, which is 1 cm lower than the corresponding leaf position H. Use the blade clamp 6 Fixed blade.

[0036] 1.1.1 Cultivation method and treatment

[0037] Plant rice (Xieyou 63) with a height of 13.5c...

Embodiment 3

[0049] Embodiment 3 Auspicious grass (ornamental plant) experiment

[0050] 1 Materials and methods

[0051] 1.1 Experimental design

[0052] see figure 1 , figure 2 , select the infrared detector of embodiment 1 for use.

[0053] The auspicious grass experiment was carried out in the 121 laboratory of the School of Life Sciences of Zhejiang University (Hangzhou, Zhejiang, 120.2E, 30.3N). The auspicious grass was placed on the window sill. The data measurement season was from the end of April to the end of May in spring, with an average temperature of 20 to 23 degrees and relative humidity 75% to 80%. All data measurements were completed between 8 and 10 a.m. Beijing time. Use a soil moisture meter to measure the volumetric water content. When the soil moisture is saturated, the distance L between the blade clamp B and the leaf tip A is 22 cm, which is 1 cm lower than the corresponding leaf position H, and the blade is fixed with the blade clamp.

[0054] 1.1.1 Cultivat...

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Abstract

The invention provides an inductive water-saving irrigation automatic control method based on the turgor of plant leaves, which applies an inductive water-saving irrigation automatic control device. The method is characterized in that an action that an unwatered plant leaf enters an infrared induction zone is taken as a signal; the physiological characteristic that the water deficiency of crops causes leaf water potential and turgor reduction is utilized; according to the inverse correlation relationship between the sag and turgor of the leaf, in combination with a principle of crop deficit compensation and water-saving irrigation, an infrared induction technique is applied to detect the sag changes of the leaf; and the automatic effluent and flow break of irrigation water are realized via the detection and control of an inductor. The method has the advantages that the method responds to the physiological water requirement of plants more directly, more comprehensively, more rapidly and more sensitively, is combined with the principle of compensatory water-saving irrigation, is high in control precision and water saving effect, has the estimated water saving rate of 30 percent, can meet the requirements of users on accurate, simple, fast and easy field irrigation control, and can bring about obvious economic benefit and social benefit.

Description

technical field [0001] The invention belongs to a realization method of a water-saving automatic irrigation control system, and mainly relates to an automatic irrigation control method based on the change of plant leaf turgor pressure, based on the physiological characteristics of the anti-correlation between leaf sag and turgor pressure, and deficit compensation water saving Irrigation theory and infrared sensor measurement and control technology. Background technique [0002] Most of the existing automatic irrigation systems are based on the monitoring of soil moisture content or air humidity, or by means of fixed time intervals. Instead of directly detecting the physiological water shortage of the plant itself, it is really effective to control the automatic irrigation according to the physiological water demand of the plant. [0003] The currently developed water-saving irrigation technology is usually controlled based on the change sensing of environmental factors such...

Claims

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Application Information

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IPC IPC(8): A01G25/16G05D22/02
Inventor 王根轩周海莲周磊甘毅
Owner ZHEJIANG UNIV
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