Nutrient solution replenishing and adjusting device and method

A technology for nutrient solution and nutrient solution pool, which is applied in the field of real-time replenishment and adjustment of nutrient solution, can solve the problem that it is difficult to ensure stable and reliable operation of nutrient solution properties, and achieves the effects of low cost, good effect and simple equipment.

Inactive Publication Date: 2009-07-29
CHINA AGRI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result of this is that it is difficult to ensure the stability of the nutrient solution and the reliable operation of the system

Method used

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  • Nutrient solution replenishing and adjusting device and method
  • Nutrient solution replenishing and adjusting device and method
  • Nutrient solution replenishing and adjusting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the nutrient solution cultivation process of cherry tomatoes in Xiaotangshan Special Vegetable Base, Changping District, Beijing, according to the water source water quality and the actual nutrient solution formula and fertilizer type, the supplementary plan for nutrient solution is as follows:

[0034] 1) According to the water quality requirements of soilless cultivation and the demand of cherry tomatoes for various nutrient elements, tap water was selected from Xiaotangshan Special Vegetable Base in Changping District, Beijing, and the nutrient solution formula was determined to be the Hoagland-Anon formula (calcium nitrate 710 grams / ton, potassium nitrate 405 grams / ton, potassium sulfate 260 grams / ton, ammonium nitrate 40 grams / ton, magnesium sulfate 150 grams / ton, phosphoric acid 200 ml / ton, chelated iron 16 grams / ton, boric acid 3 grams / ton tons, manganese sulfate 2 grams / ton, zinc sulfate 0.22 grams / ton, copper sulfate 0.08 grams / ton, ammonium molybdate 0.5 gra...

Embodiment 2

[0042] In the Xiaotangshan Special Vegetable Base in Changping District, Beijing, during the process of nutrient solution cultivation of cherry tomatoes (the nutrient solution formula is Hoagland-Anon formula), according to the water quality, the actual nutrient solution formula and the type of fertilizer used, the An example of an adjustment program for the nutrient solution is as follows:

[0043] 1) step is with embodiment 1;

[0044] 2) After the different fertilizers selected in step 1) are formulated into nutrient solutions according to the formula, they are added to the nutrient solution pool 9 to cultivate cherry tomatoes, and the EC sensor and pH sensor in the nutrient solution pool 9 detect the EC and pH of the nutrient solution in real time , when the EC deviates from 2 to 3.5mS / cm or the pH deviates from 5.8 to 6.2, the sensor will issue commands for supplementing fertilizer and acid;

[0045] 3) The control device 13 first calculates the total amount of the remai...

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PUM

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Abstract

The invention discloses a nutrient solution supply and adjusting device in the field of soilless culture and a method thereof. The device comprises a water source, a water supply electromagnetic valve, an electronic water meter, a water supply pipeline, a liquid mixing pump, an EC sensor, a pH sensor, a liquid level sensor, a nutrient solution bath, a metering pump, a fertilizer supply electromagnetic valve, a mother liquor reservoir and a control device. Through the real-time monitoring of the nutrient solution reserves, the EC value and pH value variation, the device takes corresponding fertilizer, acid and water supply measures so as to realize the adjustment and supply of the nutrient solution during the soilless culture and ensure the normal supply of the nutrient solution. The method and the device have the advantages of simplicity, low cost, practicability, easy realization and good effects.

Description

technical field [0001] The invention relates to a device and method for replenishing and adjusting nutrient solution in the field of soilless cultivation, in particular to a device and method for real-time replenishment and adjustment of nutrient solution based on on-line monitoring of EC and pH of nutrient solution. Background technique [0002] In the process of rapid development of modern facility agriculture, the planting method of soilless cultivation is more and more widely used. At present, facility cultivation in the United States, Japan and other countries basically popularizes nutrient solution soilless cultivation technology; the European Union also clearly stipulates that in the 21st century, all horticultural crops in EU countries must realize soilless cultivation. [0003] Whether it is soilless cultivation of vegetables or flowers, the adjustment and replenishment of nutrient solution is the key technology of nutrient solution management. The supply of nutrien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/06
CPCY02P60/21
Inventor 宋卫堂王成徐志豪李玉峰曲英华乔晓军王宇欣
Owner CHINA AGRI UNIV
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