Special nutrient solution for hydroponic lettuce and preparation method thereof

Abstract

The invention relates to the technical field of hydroponic lettuce nutrient solutions, in particular to a special nutrient solution for hydroponic lettuce and a preparation method of the special nutrient solution. The nutrient solution comprises a solution A and a solution B. The solution A comprises 538-543 mg / L of calcium ammonium nitrate and 480-485 mg / L of potassium nitrate. The liquid B comprises 323 to 328 mg / L of potassium nitrate, 490 to 495 mg / L of magnesium sulfate heptahydrate, 178 to 183 mg / L of monopotassium phosphate, 18 to 23 mg / L of ethylenediamine tetraacetic acid ferric sodium salt, 2.0 to 2.2 mg / L of manganese sulfate monohydrate, 0.2 to 0.3 mg / L of zinc sulfate heptahydrate, 0.07 to 0.09 mg / L of copper sulfate pentahydrate, 0.01 to 0.03 mg / L of sodium molybdate and 2.8to 2.9 mg / L of boric acid. The preparation method of the nutrient solution is simple and easy to operate. The nutrient solution provided by the invention can improve the quality of lettuce, promote the VC content, reduce the nitrite content, reduce the application amount of macroelement fertilizer and promote the development trend of agricultural water saving and fertilizer saving.

Description

technical field [0001] The invention relates to the technical field of hydroponic lettuce nutrient solution, in particular to a special nutrient solution for hydroponic lettuce and a preparation method thereof. Background technique [0002] Hydroponic lettuce is high-quality and clean, water-saving and fertilizer-saving, and has entered the stage of factory production in recent years. How to design a reasonable nutrient solution formula in production to achieve the goal of high quality and high yield is the core issue of lettuce soilless cultivation. A suitable formula not only affects the growth and development of crops and the formation of yield, but also is related to the economical use of fertilizers, reducing production costs and improving economic benefits. [0003] At present, most of the nutrient solutions used in production are general-purpose formulas for common vegetables on the market, which are not targeted. In the process of use, the yield per unit area is not...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the nutrient solutions used in production are general-purpose formulas for common vegetables on the market, which are not targeted. In the process of use, the yield per unit area is not high, and the content of nitrite produced is high, which affects the yield and quality of lettuce

In addition, during the growth of lettuce, the large amount of elemental fertilizers in the nutrient solution is used more, which increases the production cost

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