Nutrient solution fertilizing device and nutrient solution irrigation method

Abstract

The invention discloses a nutrient solution fertilizing device and a nutrient solution irrigation method. The fertilizing device comprises five mother liquor tanks, one liquor preparation tank, pipelines, an underground water power pump, a nutrient solution pump and on / off valves, wherein the five mother liquor tanks are respectively provided with ferric salt, microelements, calcium nitrate tetrahydrate, potassium nitrate, monopotassium phosphate and magnesium sulfate heptahydrate. The irrigation method specifically comprises the following steps: predicating the daily demand of greenhouse plants on elements of nitrogen, phosphorus, potassium, calcium and magnesium in a next day, calculating the demand amount of the mother liquor according the predication result, preparing a nutrient solution, and subsequently starting or stopping the irrigation according to the water content of a medium. The nutrient solution fertilizing device and the nutrient solution irrigation method are simple to operate and low in cost, and can be applied to nutrient solution fertilization and nutrient solution irrigation.

Description

technical field [0001] The invention relates to the field of soilless cultivation, in particular to the technology of nutrient solution fertilization. Background technique [0002] Compared with the traditional soil cultivation method, the advantage of soilless cultivation is that it can not only produce cheap pollution-free, green food to meet people's living needs, but also improve the efficiency of water and fertilizer use. The area of ​​soilless cultivation in my country is increasing rapidly, but there are not many researches on related equipment. At present, most of the fertilization devices used in my country's greenhouse production are imported from abroad, which are expensive and complicated to operate, and require special training for producers. For example, the Dutch company PRIVA's greenhouse fertilization device costs about 280,000 yuan per set. The current status of facility production in my country is small-scale, scattered operations, and the proportion of ...

AI Technical Summary

Problems solved by technology

[0004] In view of the high cost and complicated operation and management of the nutrient solution fertilization device in the current production, the present invention is based on the daily fertilizer requirement of greenhouse crops determined by the invention patent "a method for determining the daily fertilizer requirement of greenhouse crops" (patent number: 20110000839.1) amount, a simple nutrient solution fertilization device was designed

Images