Preparation method and device of nutrient solution

Abstract

An embodiment of the invention relates to the soilless culture field, and discloses a preparation method of nutrient solution and a preparation device of nutrient solution. The preparation method of the nutrient solution includes steps of acquiring a standard formula of the nutrient solution and a standard soluble salt concentration EC value corresponding to the standard formula, wherein the standard formula includes standard content of N nutrient elements required by a plant in a specific growth stage; confirming a target EC value to be reached by the nutrient solution after preparation according to the planting environment and the standard EC value; adjusting the content of at least one nutrient element in the standard formula according to the target EC value and standard EC value, and acquiring the adjusted nutrient solution formula, wherein the absolute value of the differential value between the EC value of the adjusted nutrient solution formula and the target EC value is not morethan the preset error threshold value; preparing the nutrient solution according to the adjusted nutrient solution formula. The method can adjust the standard formula of the nutrient solution according to the change of the EC value of the nutrient solution, thus the nutrient solution can better meet the growth demand of the plant.

Description

technical field [0001] The embodiments of the present invention relate to the field of soilless cultivation, in particular to a preparation method and device for a nutrient solution. Background technique [0002] In order to meet the needs of modern development, soilless cultivation gradually replaces traditional soil cultivation. Soilless cultivation uses peat or forest humus, expanded vermiculite and other light materials as the seedling substrate to fix the plants, so that the plant roots can directly contact the nutrient solution, and adopts the modern technology of mechanized precision sowing for one-time seedling formation. Soilless cultivation replaces the soil environment with the artificially manufactured crop root environment, which effectively solves the contradictions in the supply of water, air, and nutrients that exist in soil cultivation. At present, soilless cultivation has been widely used in cultivating fruits, vegetables and other crops to reduce various ...

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Problems solved by technology

[0003] However, the inventors have found that there are at least the following problems in the prior art: in the prior art, there is no mention of adjusting the nutrient solution formula according to the adjustment of the EC value

Even if it is mentioned to adjust the nutrient solution formula according to the change of EC value, because there are many elements involved and many factors affecting the EC value, no effective adjustment strategy can be found

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